UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
__________________________
FORM 10-K
xANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 20162018
OR
¨TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from _____________ to _____________
Commission file number 000-31293
______________________
EQUINIX, INC.
(Exact name of registrant as specified in its charter)
Delaware 77-0487526
(State of incorporation) (IRS Employer Identification No.)
One Lagoon Drive, Redwood City, California 94065
(Address of principal executive offices, including ZIP code)
(650) 598-6000
(Registrant’sRegistrant's telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each class Name of each exchange on which registered
Common Stock, $0.001 The NASDAQ Stock Market LLC
Securities registered pursuant to Section 12(g) of the Act: None
Indicate by check mark if the registrant is a well-known seasoned issuer as defined in Rule 405 of the Act. Yes  x    No  ¨
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.
Yes   ¨   No  x
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes  x    No  ¨
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes  x    No  ¨
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’sregistrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.x
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definitions of “large"large accelerated filer,” “accelerated filer”" "accelerated filer" and “smaller"smaller reporting company”company" in Rule 12b-2 of the Exchange Act. (Check one):
Large accelerated filer  x
Accelerated filer  o
Non-accelerated filer  o
Smaller reporting company  o
Emerging growth company   ¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.   ¨
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes   ¨   No  x
The aggregate market value of the voting and non-voting common stock held by non-affiliates computed by reference to the price at which the common stock was last sold as of the last business day of the registrant’sregistrant's most recently completed second fiscal quarter was approximately $27.6$34.2 billion. As of February 24, 2017,21, 2019, a total of 71,637,32280,865,431 shares of the registrant’sregistrant's common stock were outstanding.
DOCUMENTS INCORPORATED BY REFERENCE
Part III – Portions of the registrant’sregistrant's definitive proxy statement to be issued in conjunction with the registrant’s 2017registrant's 2019 Annual Meeting of Stockholders, which is expected to be filed not later than 120 days after the registrant’sregistrant's fiscal year ended December 31, 2016.2018. Except as expressly incorporated by reference, the registrant’sregistrant's proxy statement shall not be deemed to be a part of this report on Form 10-K.
 


EQUINIX, INC.
FORM 10-K
DECEMBER 31, 20162018
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PART I
Table of Contents

ITEM 1.BUSINESS
The words “Equinix”"Equinix", “we”"we", “our”"our", “ours”"ours", “us”"us" and the “Company”"Company" refer to Equinix, Inc. All statements in this discussion that are not historical are forward‑lookingforward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, including statements regarding Equinix’s “expectations”Equinix's "expectations", “beliefs”"beliefs", “intentions”"intentions", “strategies”"strategies", “forecasts”"forecasts", “predictions”"predictions", “plans”"plans" or the like. Such statements are based on management’smanagement's current expectations and are subject to a number of factors and uncertainties that could cause actual results to differ materially from those described in the forward‑lookingforward-looking statements. Equinix cautions investors that there can be no assurance that actual results or business conditions will not differ materially from those projected or suggested in such forward‑lookingforward-looking statements as a result of various factors, including, but not limited to, the risk factors discussed in this Annual Report on Form 10-K. Equinix expressly disclaims any obligation or undertaking to release publicly any updates or revisions to any forward‑forward looking statements contained herein to reflect any change in Equinix’sEquinix's expectations with regard thereto or any change in events, conditions, or circumstances on which any such statements are based.
Overview
Equinix, Inc. connects more than 8,500(1)9,800 companies directly to their customers and partners insideacross the world’sworld's most interconnected data centers. Today, businesses leverage the Equinixcenter and interconnection platform in 41 strategic markets across the Americas, Asia-Pacific, and Europe, Middle East and Africa (EMEA). Equinix operates as a real estate investment trust ("REIT") for federal income tax purposes.
In September 2012, we announced that our Board of Directors approved a plan for Equinix to pursue conversion to a REIT. On December 23, 2014, our Board of Directors formally approved our conversion to a REIT effective on January 1, 2015. We implemented the REIT conversion in 2014, and began operating as a REIT for federal income tax purposes effective January 1, 2015. In May 2015, we received a favorable response to the private letter ruling (“PLR”) we had requested from the U.S. Internal Revenue Service (“IRS”) in connection with our REIT conversion for federal income tax purposes. Our REIT operations include almost all our data center operations in the U.S., Europe and Japan held through qualified REIT subsidiaries (“QRSs”). Our data center operations in other jurisdictions have been designated as taxable REIT subsidiaries (“TRSs”).
In January 2016, Equinix completed the acquisition of TelecityGroup, plc valued at approximately $3.7 billion. In December 2016, Equinix announced that it had signed a definitive agreement to purchase 24 new data center sites, consisting of 29 data centers across 15 metro areas, and their operations, from Verizon Communications Inc. ("Verizon") for $3.6 billion. This will be the 17th acquisition in our history and is consistent with our acquisition strategy of extending our platform to new markets and expanding our interconnection density. Organically, we continue to expand in key markets including the recent opening and expansion of six data centers on four continents: Sydney and Tokyo in 2016, and Abu Dhabi, Dubai, London, and São Paulo in Q1 2017.
platform. Platform EquinixTM® combines a global footprint of state-of-the-art International Business Exchange™ (IBX®(IBX®) data centers, a variety of interconnection solutions, unique business and digital ecosystems and expert support. Together, these components accelerate business growthToday, businesses leverage the Equinix interconnection platform in 52 strategic markets across the Americas, Asia-Pacific, and opportunityEurope, the Middle East and Africa ("EMEA"). Equinix operates as a real estate investment trust for Equinix’s customers by securing their infrastructure and applications closerfederal income tax purposes ("REIT").
We elected to their people, clouds, locations and data. This enables customers to improve performancebe taxed as a REIT for federal income tax purposes beginning with cost-effective and scalable interconnections, work with vendors to deploy new technologies, such as cloud computing, and collaborate with the widest variety of partners and customers to achieve their ambitions.
Equinix’s platform offers these unique value propositions to customers:
Global Data Centers
A broad footprint of 150 IBX data centers in 21 countries on 5 continents, 14 million+ gross square feet globally.
More than $13.5 billion of capital invested in capacity, new markets and acquisitions since 1998.
Equinix delivered uptime of 99.9999% across its footprint in 2016.
Interconnection
More than 1,400 networks and approximately 230,000+ cross connects in Equinix sites.
Equinix provides less than 10 milliseconds latency to the majority of the global markets in North America, Europe, Latin America and Asia-Pacific.

____________________
(1) All metrics in this Annual Report on Form 10-K are asour 2015 taxable year. As of December 31, 20162018, our REIT structure included all of our data center operations in the United States ("U.S."), Canada, Japan, and the data center operations in EMEA with the exception of Bulgaria, United Arab Emirates and a portion of Turkey. Our data center operations in other jurisdictions are operated as taxable REIT subsidiaries ("TRSs").

Equinix enables its customers to leverage an Interconnection Oriented ArchitectureTM (IOATM) strategy - a proven and repeatable engagement model that both enterprises and service providers can leverage to directly and securely connect people, locations, clouds and data - by deploying IT infrastructures on Platform EquinixTM.
Partners, CustomersCareful, steady expansion has been key to Equinix's growth strategy since our founding, as we seek to offer our customers interconnection opportunities ahead of demand. In April 2018, Equinix purchased the 1.6 million-square foot Infomart Building™ in Dallas, including its operations and Prospects
Equinix sites house a blue-chip customer base of 8,500+ global businesses.
These customers represent a who’s who of network, digital media, financial services, cloud/IT and enterprise leaders.
Opportunity
Equinix data centers contain a dynamic marketplace for communications services, interconnecting businesses, networks, carriers and content providers to potential suppliers, customers and partners.
More than 8,500+ potential partners to deploy world-class solutions.
tenants, where we had already been operating four Equinix data centers. In the same month, we closed our acquisition of Australian data center provider Metronode and its 10 data centers.
In September 2018, Equinix named Charles Meyers President and Chief Executive Officer of the Company. Meyers also joined Equinix's Board of Directors. Meyers succeeded Peter Van Camp, who had served as interim CEO since January 2018. Upon Meyers' appointment as CEO, Van Camp resumed his role as Executive Chairman of the Equinix Board of Directors, a position he has establishedheld since 2005. Meyers joined Equinix in 2010 as President, Equinix Americas, leading our most profitable region through a critical masstime of customers that continues to drive new and existing customersignificant growth and bookings. Our network-strong operating performance. Meyers then served as the Chief Operating Officer at Equinix, where he led the Global Sales, Marketing, Operations and cloud-neutralCustomer Success teams. For the past year, he was President, Strategy, Services and Innovation (SSI) leading Equinix's strategic business model also contributes to our success in the market. Rather than selling a particular network, we offer customers direct interconnection to an aggregation of bandwidth providers. The providers in our sites include the world’s top carriers, mobile providers, internet service providers (ISPs), broadband access networks (DSL / cable)teams including Corporate Strategy, Technology Innovation, Product Management and international carriers. Our neutrality also means our customers can choose to buy from, or partner with, leading companies across our five targeted verticals. These include:
Network and Mobile Providers (AT&T, British Telecom, China Mobile, Comcast, Level 3 Communications, Lycamobile, NTT Communications, SingTel Ltd., Syniverse Technologies, T-Mobile, TATA Communications, Verizon)
Cloud and IT Services (Amazon Web Services, Box Inc., Google Cloud Platform, Carpathia Hosting Inc., NetApp, Microsoft Azure, Office 365, Salesforce.com, SoftLayer, Cisco Systems Inc., Oracle Cloud, Datapipe, CloudSigma, VMware vCloud Air, Workday, Inc.)
Content Providers (Brightroll, eBay, ContentBridge, DIRECTV, Hulu, LinkedIn, Netflix, Priceline.com)
Enterprise (Anheuser-Busch, InBev, Bechtel, BMC Software, Burger King Corporation, Caterpillar, Inc., CDM Smith, Chevron, GE, Harper Collins Publishers, Ingram Micro)
Financial Companies (ACTIV Financial, Bloomberg, Chicago Board Options Exchange, DirectEdge, Quantlab Financial, NASDAQ, OMX Group Inc., NYSE Technologies, Thomson Reuters)
Equinix generates revenue by providing colocation and related interconnection and managed IT infrastructure offerings on a global platform of 150 IBX data centers.
Colocation offerings include operations space, storage space, cabinets and power for customers’ colocation needs inside Equinix's IBX data centers.
Interconnection offerings include:
Equinix Cloud Exchange™, which enables simultaneous, direct and secure connections to multiple clouds from a single port.
Equinix Performance Hub™, which takes enterprise IT inside any one of our global data centers, bringingour customers closer to their end users for improved network reliability, performance and security.
Equinix Data HubTM, which enables secure, compliant, efficient access to business-critical data and analytics wherever users are located around the globe.
Equinix also offers cross connects, as well as switch ports, on the Equinix Internet Exchange. These offerings provide scalable and reliable connectivity that allows customers to exchange traffic directly and securely with the service provider of their choice or with each other, creating a performance optimized business ecosystem for the exchange of data between strategic partners, and collaboration and innovation opportunities that were not previously possible.
Managed IT infrastructure services are offered in a few regional markets where customers typically have higher support needs. These services allow customers to leverage Equinix’s technical and local market expertise.
Equinix Professional Services guide customers though complex IT infrastructure changes and hybrid and multi-cloud deployments quickly and securely, while delivering continuous and reliable technical support. Equinix Professional Services for Cloud provides expert consulting to our customersEngineering. Under Meyers' leadership, SSI worked to optimize our position as a cloud migrations, matching service providersenabler, identify key growth areas, and architecturesevolve our offerings in response to individual business needs.

The market, for Equinix’s offerings has previously been served by large telecommunications carriers that have bundled their telecommunicationscompetitive and managed services with their colocation offerings. In addition, some Equinix customers, such as Microsoft, build and operate their own data centers for their large infrastructure deployments, called server farms. However, these customers rely upon Equinix IBX data centers for many of their critical interconnection relationships. The need for sizable, wholesale, outsourced data centers is also being addressed by providers that build large data centers to meet customer needs for standalone data centers. This is a different customer segment than Equinix serves.
The increasing cost and complexity of the power and cooling requirements of today’s data center equipment has enabled Equinix to attract many customers who have outgrown their existing data centers, or who have realized the benefits of a network-neutral model and the ability to create their own optimized business ecosystems for the exchange of data. Strategically, we will continue to look at attractive opportunities to expand our footprint and offerings. We will also continue to leverage our worldwide reach and depth to differentiate Equinix based upon our ability to support truly global customer requirements in all our markets.
Equinix is benefiting from a growth in demand for data center and interconnection offerings. Several factors contribute to this growth in demand, including:
The growth of “proximity communities” that rely on immediate physical colocation and interconnection with their strategic partners and customers, such as financial exchange ecosystems for electronic trading and settlement, media and content provider ecosystems, and ecosystems for real-time bidding and fulfillment of internet advertising.
The adoption of cloud computing technology services, including the growth of hybrid/multi-clouds, enterprise cloud service offerings such as Software-as-a-Service (SaaS), Infrastructure-as-a-Service (IaaS) and Platform-as-a-Service (PaaS) and security and disaster recovery services.trends.
The continuing growth of consumer internet traffic from new bandwidth-intensive services, such as video, voice over IP (VoIP), social media, mobile data, gaming, data-rich media, Ethernet and wireless services.
The increasing requirements for anytime, anywhere and any device interconnection out at the edge of the corporate network to improve the performance, security, scalability and reliability of interconnecting people, locations, clouds and data.
Significant increases in power and cooling requirements for today’s data center equipment. New generations of servers continue to concentrate processing capability and the associated power consumption and cooling load into smaller footprints, and many legacy-built data centers are unable to accommodate these new power and cooling demands. The high capital costs associated with building and maintaining “in-sourced” data centers creates an opportunity for capital savings by leveraging an outsourced colocation model.
Industry Background
The internet is a collection of numerous independent networks interconnected to form a network of networks. Users on different networks communicate with each other through interconnection between these networks. For example, when a person sends an email to someone who uses a different provider for his or her connectivity (e.g., Comcast versus Verizon)AT&T), the email must pass from one network to the other to get to its final destination. EquinixA data center provides a physical point at which that interconnection can occur.

To accommodate the rapid growth of internet traffic that was occurring in the early years of the internet, an organized approach for network interconnection was needed. This was the start of the network era, when networks gained mutual advantage by exchanging data traffic on interoperable platforms. The exchange of traffic between these networks became known as peering. Peeringpeering, which is when networks agree to trade traffic at relatively equal amounts, and set up agreements to trade traffic, often at no charge to the other party. At first, government and nonprofit organizations established places where these networks could exchange traffic, or peer with each other. These points were known as network access points, or NAPs. Over time, many NAPs became a natural extension of carrier services and were run by companies such companies as MFS (now a part of Verizon Business), Sprint, Ameritech and Pacific Bell (the latter two are now part of AT&T).
Ultimately, these NAPs were unable to scale with the growth of the internet, and the lack of “neutrality”"neutrality" by the carrier owners of these NAPs created a conflict of interest with the participants. This created a market need for network-neutral interconnection points that could accommodate the rapidly growing needdemand to increase performance for enterprise and consumer users of the internet, especially with the rise of important content providers such as AOL, Microsoft, Yahoo! and others. In addition, the providers, as well as a growing number of enterprises, required a more secure and reliable solution for direct connection to a variety of telecommunications networks, as the importance of their internet operations continued to grow. These were the seeds of the connected era, when peering expanded exponentially among new players, and access to information anytime and anywhere became the norm.

To accommodate internet traffic growth, the largest networks left the NAPs and began connecting and trading traffic by placing private circuits between each other. Peering, which once occurred at the NAP locations, was moved to these private circuits. Over the years, these circuits became expensive to expand and could not be built quickly enough to accommodate traffic growth. This led to a need by the large carriers to find a more efficient way to peer. The multi-tenant or colocation data center was introduced to meet this need. Today, many customers satisfy their requirements for peering through data center providers like Equinix because this strategy permits them to peer with the networks they require within one location, using simple, direct and secure connections. Their ability to peer within a data center or across a data center campus, instead of across a metro area, has increased the scalability of their operations while decreasing network costs.
The interconnection model has further evolved over the years to include new offerings, as the collaborative landscape of the interconnected era imposes new demands on connectivity. As enterprises becomefor connectivity that facilitates more scalable interactive and real-time digital interconnections. Enterprises are becoming increasingly interdependent and cloud-enabled,cloud- and digital-enabled, and to compete they need real-time data exchange and reliable, instant connections between the various corners ofand across any given digital ecosystem to compete.ecosystem. Starting with the peering and network communities, interconnection has been used for new network services,solutions, including carrier Ethernet, multiprotocol label switching (MPLS), virtual private networks (VPNs), and mobile services, in addition to traditional international private line and voice services. The data center industry is working to keep up with the rapid digital transformation of today's businesses, and it continues to evolve with a set of new network offerings (such as SDN, blockchain and 5G) where interconnection is often used to solve the network-to-networkany challenge using both physical and the cloud-to-cloud interconnection challenges.virtual networks, across geographic boundaries.
In addition, the enterprise customer segment is also evolving. In the past, most enterprises opted to keep their data center requirements in-house. However, current trends are leading more enterprise chief information officers (CIOs) to either outsource their data center requirements, and/or extend their corporate wide area networks (WANs) into carrier-neutral colocation facilities. Thesefacilities where there are dense ecosystems of network, cloud and IT service providers, and business partners that enterprises can directly and securely interact with in real-time.
The following are macro, technology and regulatory trends include:that are forcing enterprises and service providers across all industries to rethink their IT architectures to decrease complexity and cost, and seize new opportunities to compete successfully as digital businesses:
Digital businesstransformation is becoming a global phenomenon.globalization According to IDC, by 2021 at least 50% of global GDP will be digitized, and growth in every industry will be driven by digitally enhanced offerings, operations and relationships. Interconnection becomes a key building block for digital business along that journey because real-time interactions between people, things, locations, clouds and data are critical in a digital age.

Urbanization is increasing in the majority of metros worldwide. Today, about 55% of the proliferationworld's population lives in urban areas, and that will grow to 68% by 2050, according to the United Nations. With so many people so close together, digital services must be increasingly concentrated and close to users, so companies can deliver the connectivity their users expect. Interconnection brings applications, data, content and networking into proximity in these densely populated areas. It allows companies to deliver on their service promises, even as demand keeps growing.


Cybersecurity has increased in frequency, scope and complexity in our more closely connected world. In fact, a large-scale cybersecurity breach is one of bandwidth intensive internet-facing applications and rich media content
the most serious risks facing companies today. Ernst & Young projects the global cost of cybersecurity breaches will reach $6.0 trillion by 2021. Companies need to provide accessstrengthen their defenses, even as they increase their vulnerability by distributing their data across a variety of sources and users. To do that, businesses need their security controls to cloud computing environmentsbe distributed as well, leveraging interconnection out at the edge where most traffic exchange is happening. The direct, private nature of interconnection also increases data protection and lowers the risk of being compromised.

Data Compliance has become a mandate among businesses around the world. evolvingThe digital economy may be global, but more countries are regulating the data at the heart of the digital economy and prescribing enhanced rules around personal data protections (e.g., GDPR). But remaining compliant is about more than following the rules. In a Thompson Reuters survey, 69% of respondents said successful compliance efforts can drive up business efficiency and effectiveness by enabling greater focus on value-added activities. The need to address compliance drives interconnection because it enables companies to link their data storage, analytics and clouds in the same business region. That data can stay proximate, and local if required by regulations, but still be accessed globally to meet business requirements.

Business Ecosystemsare becoming the life-blood of digital business. Gartner predicts that by 2021, the number of organizations using a mix of intermediaries will more than double, and that active engagement by these organizations with industries in ecosystems outside their native industry will nearly triple. The reason is that digital trade flows are creating global business and data processes that involve an increasing variety of customers, partners and employees. Interconnection securely and efficiently connects all the players in all these business ecosystems, as those ecosystems expand in depth and number
Other trends that we see impacting our customers' IT strategies include:
The need for businesses and organizations to create a "digital edge" - where commerce, population centers and digital ecosystems meet. A more geographically distributed IT infrastructure is needed to support the digital operations that now cover every global region and every aspect of today's global businesses.

The growth of "proximity communities" that rely on immediate physical colocation and interconnection with strategic partners and customers. Examples include financial exchange ecosystems for electronic trading and settlement, media and content provider ecosystems, and ecosystems for real-time bidding and fulfillment of internet advertising.

The Internet of Things (IoT), big data infrastructures, artificial intelligence (AI) and the emergence of 5G high-speed mobile and wireless networks, which are creating unprecedented quantities of data that fuel digital business.
business continuity
The accelerating adoption and ubiquitous nature of cloud computing technology services, in particular hybrid/multiclouds, along with enterprise cloud service offerings such as Software-as-a-Service (SaaS), Infrastructure-as-a-Service (IaaS) and Platform-as-a-Service (PaaS) and security and disaster recovery optionsservices.
tight corporate IT budgets
The continuing growth of consumer internet traffic from new bandwidth-intensive services (e.g., video, voice over IP, social media, mobile data, gaming, data-rich media), Ethernet and wireless services, as well as new devices (e.g., wearables, home assistances, AR/VR headsets). These devices and services also increase the requirements for anytime, anywhere and any device interconnection out at the edge to improve the performance, security, scalability and reliability of interconnecting people, locations, clouds, data and things.

Significant increases in power and cooling requirements for today's data center equipment. New generations of servers and storage devices continue to concentrate processing capability and the associated power consumption and cooling load into smaller footprints; and many legacy-built data centers are unable to accommodate these new power and cooling demands. The high capital costs associated with building and maintaining "in-sourced" data centers creates an opportunity for capital savings by leveraging an outsourced colocation model.
Industry analysts forecastproject the compound annual growth rate of the global carrier neutral colocation market to be approximately 8%8.4% between 20162018 and 2020.2022.
Equinix Value Proposition
Equinix's global platform for digital business offers these unique value propositions to customers:

Reach Everywhere
With Platform Equinix, enterprises and service providers can deploy digital infrastructure anywhere they need to be. Customers are quickly and easily able to place applications, data, security and networking controls next to users, clouds and networks in major metros globally. With one global partner, our customers are able to reduce complexity and accelerate time to market while relying on the consistency of a proven worldwide interconnection and data center leader.
Interconnect Everyone
Businesses operating on Platform Equinix will be able to discover and reach anyone on demand, through one connection to the world, by directly connecting physically or virtually to customers, partners, providers and between their points of presence. This gives our customers the capabilities to reach everyone they need to from one place and to simplify, scale and dynamically adapt their digital infrastructures to keep pace with rapidly changing business demands.
Integrate Everything
On Platform Equinix, our customers are able to activate their digital edge through leading technology tools, partners and services. By leveraging software controls and expert advisors, service providers and enterprises can dynamically design, implement and manage their digital edge. They can also secure, view, control and manage hybrid IT environments to seamlessly scale digital integration across their business.
More than 8,5009,800 companies, including a diversified mix of cloud and IT service providers, content providers, enterprises, financial companies, and network and mobile service providers, currently operate within Equinix IBX data centers. These companies derive specific value from the following elements of the Equinix serviceplatform offering:
Interconnection leadership: The global digital economy’seconomy's demands for fast, secure business collaboration puts thecreates a need for interconnection inside Equinix atacross Equinix's global platform. As this digital journey intensifies, businesses are creating new commerce and collaboration models to compete. Success in this fast-moving world can be facilitated by a premium. Equinix accelerates business performance by connecting companies to their customers, employees, and partners inside the world's most interconnected data centers. Equinix is the globalsingle interconnection platform for digital business that is connected physically and virtually around the world's leading businesses from a broad rangeworld. Companies that can deploy an interconnected digital infrastructure can connect broadly and securely scale the integration of industries, including cloud, networks, finance, and media and entertainment. Inside Equinix, customers can interconnect across industries withtheir business at the speed, security, reliability and scalability needed to compete and grow. Equinix is where opportunity connects.digital edge.
Cloud access and expertise: Equinix is home to 2,500+more than 2,900 cloud and IT service providers and a variety of secure routes to the efficiencies, performance and cost-savings of the cloud. The Equinix Cloud Exchange Fabric™ ("ECX Fabric") offers on-demand access to multiple cloud providers from multiple networks, enabling customers to design scalable cloud services tailored to their needs at a given moment. In 2018, Equinix undertook the next phase in the evolution of Platform Equinix to achieve the direct physical and virtual connection of its IBX data centers around the world. This advance enables our customers to connect on demand to any other customer from any Equinix location, equipping digital businesses to scale their operations rapidly across the largest markets globally. On the ECX Fabric, customers do not have to be in the same IBX data center as their cloud provider(s); they can remotely access cloud services as if they were physically close to the provider. Equinix Professional Services for Cloud experts enable our customers to successfully deploy a mix of private, public, hybrid and multi-cloudmulticloud environments over a global interconnected cloud fabric to best fit their business and customer requirements.
Comprehensive global solution: With 150200 IBX data centers in 4152 markets in the Americas, EMEA and Asia-Pacific, Equinix offers a consistent, interconnected global solution.
Premium data centers and expertise: Equinix IBX data centers feature advanced design, security, power and cooling, and data center infrastructure management (DCIM) elements to provide customers with industry-leading visibility and reliability, including average uptime of 99.9999% globally in 2016. While others in the market have business models that include additional offerings, Equinix is focused on colocation and interconnection as our core competencies.2018. Equinix Professional Services offers practical guidance and proven solutions to help youcustomers optimize and future-proof yourtheir data center architecture.
Dynamic interconnected business ecosystems: Equinix’sEquinix's network- and cloud-neutral model has enabled us to attract a critical mass of networks and cloud and IT services providers, and that, in turn, attracts other businesses seeking to interconnect within

a single location.location or across metros. This local ecosystem model reducesleverages lower networking costs and optimizes the performance of data exchange, comparedexchange. At the same time, the ECX Fabric enables private access to connectingremote business ecosystems in regionally distributed IBX data centers to multiple partners in disparate locations.further reduce long-distance networking costs and deliver high performance. As Equinix grows and attracts an ever-more diversified base of customers, the value of Equinix’sEquinix's IBX interconnected data center offering increases.

Improved economics: Customers seeking to outsource their data center operations rather than build their own capital-intensive data centers enjoy significant capital cost savings. Customers also benefit from improved economics because of the broad access to networks and clouds that Equinix provides. Rather than purchasing costly local loops from multiple transit providers, customers can connect directly to more than 1,400 networks and 2,500 cloud and IT service providers inside Equinix’s IBX data centers. According to a recent Forrester Total Economic ImpactTM of Equinix Interconnection Solutions report, an enterprise that leverages Equinix colocation and interconnection solutions and services could realize a 300% return on investment in three years (risk-adjusted results), with a 4.2 months payback. Customers seeking to outsource their data center operations rather than build their own capital-intensive data centers enjoy significant capital cost savings. Customers also benefit from improved economics because of the broad access to networks and clouds that Equinix provides. Rather than purchasing often costly local loops from multiple transit providers, customers can connect directly to more than 1,800 networks and 2,900 cloud and IT service providers inside Equinix's IBX data centers.
Leading interconnection insight: After more than 1820 years in the industry, Equinix has a specialized staff of industry experts, professional services specialists and solutions architects who helped build and shape the interconnection infrastructure of the internet, and who are now positioned to do the same for digital businesses. This specialization and industry knowledge base offers customers unique expertise and the competitive advantage needed to compete in the global digital economy.
LastingLasting sustainability: Energy efficiency and environmental sustainability are a part of everything we do, whether we're building new data centers or upgrading existing facilities. We have committed to design, build and operate our data centers with high energy efficiency standards, and we have a long termlong-term goal of using 100% clean and renewable energy across our global platform.
Our Strategy
Our objective is to expand our global leadership position as the premier network-network and cloud-neutral data center and interconnection platform for enterprises, cloud and IT services providers, media and content companies, financial services firms, IoT and big data providers, and network and mobile services providers. The followingThese are the key components of our strategy:
Improve customer performance through global interconnection. To best succeed in today’stoday's digital economy, enterprises around the globeworld must adopt globally interconnected, on-demand digital IT architectures. The business connections forged in Equinix data centers through the power of interconnection are vital to accelerating our customers' businesses. To help companies understand, deploy and benefit from globalinterconnection, Equinix has created a blueprint for becoming an interconnected enterprise - the Interconnection Oriented ArchitectureTM® (IOATM®). strategy. Based on work with more than 170many Fortune 500 customers, anour IOA framework is a proven and repeatablean engagement model that both enterprises and solution providers can leverage to directly and securely connect people, locations, clouds and data. An IOA strategy shifts the fundamental IT delivery architecture from siloed and centralized to interconnected and distributed. Since the introduction of its IOA strategy, Equinix has created anthe "IOA Playbook" and "IOA Knowledge Base,Base™," which were developed from our aggregated learnings across more than 600 Equinix customer (enterprise and service provider) deployments. These tools are offered online at no charge to any organization and provide four fundamental, repeatable steps that organizations can take to deploy an IOA strategy across common digital workloads andworkloads. They offer application blueprints for networks, security, data and applications.applications, as well as for various use cases including ecosystems, analytics, content delivery, collaboration, hybrid multicloud and the IoT.
When combined with Equinix's critical mass of premier network and cloud providers and content companies, the increasing rate of adoption of an IOA strategy by the world's enterprise companies enables Equinix to extend its leadership as one of the core interconnection hubs of the information-driven, digital world. The density of providers inside Equinix is a key selling point for companies looking to connect with a diverse set of networks and deliver the best connectivity to their end customers out at the digital edge, of the corporate network as well as to network companies that want to sell bandwidth to companies and efficiently interconnect with other networks. Equinix currently houses more than 1,4001,800 unique networks, including the top-tier networks, allowing itswhich allow customers to directly interconnect with providers that best meet their unique price and performance needs. We have a growing mass of key players in cloud and IT services (Accenture, Amazon(Amazon Web Services, AT&T, Google Cloud Platform, Microsoft Azure and Office 365, Oracle Cloud Infrastructure, SAP HANA Enterprise Cloud and SAP Cloud Platform, Salesforce.com, SoftLayer,IBM Cloud and VMware vCloud Air)Cloud), and in the enterprise and financialfinancial/insurance sectors (Bechtel,(Anheuser-Busch, Aon, Bloomberg, Chicago BoardDeloitte, Ericsson, Ford Motors, NASDAQ, PayPal, Sysco Foods and The Society of Trade, The GAP, McGraw-Hill, etc.).Lloyd's) as customers. We expect these customer segments will continue to grow as theycustomers seek to leverage our density of network providers and interconnect directly with each other to improve performance.
Streamline ease of doing business globally. Customers say data center reliability, power availability and network choice are the most important attributes they consider when choosing a data center provider in a particular location. We have long been recognized as a leader in these areas, and our performance continues to improve.areas.
In 2016,2018, more than half of our revenue came from customers with deployments in all three of our global regions, and we expect seamless global solutions to become an increasingly important data center selection criteria as globalization continues.the need for globally interconnected, on-demand digital IT architectures continues to grow. We continue to focus on strategic acquisitions to expand our market coverage and on global product standardization, pricing and contracts harmonization initiatives to meet these global demands.

  Deepen existing ecosystems and develop new ones. As various enterprises and service and content providers locate in our IBX data centers, it benefits their suppliers and business partners to dobenefit by doing the same, and they gain the full economic and performance benefits of direct, global interconnection for their business ecosystems. These partners, in turn, pull in their business partners, creating a “network effect”"network effect" of customer adoption. Our interconnection offerings enable scalable, secure, reliable and cost-effective interconnectivity and optimized traffic exchange, which lowers overall costs and increases flexibility. The ability to directly and globally interconnect with a wide variety of companies is a key differentiator for us and enables companies to create new opportunities within unique ecosystems by working together. We also have efficient and innovative internet and cloud exchange platforms in our IBX sites to accelerate commercial growth within the ecosystems via the network effect.
Expand our product and service portfolio. Our customers’ needs for new solutions to help them scale and adopt new technologies inspire us to create new products and services. We recently introduced our Equinix Cloud Exchange Fabric™ to connect our data centers around the world and enable customers to connect on demand to clouds, networks and any other customer from any Equinix location. We also recently introduced Equinix SmartKey™, a global key management and encryption as a service offering to help our customers manage the security requirements of disbursing data across multiple clouds and third-party providers. We will continue to work with our customers to innovate and introduce new solutions to meet their evolving needs.
 Expand vertical go-to-market plan. We plan to continue to focus our go-to-market efforts on customer segments and business applications that appreciate the Equinix value proposition of interconnection, reliability, global reach and prime collaboration opportunities within and across ecosystems. We have identified these segments today as cloud and IT services, content and digital media, financial services, enterprises, IT services, and network and mobile service providers. As digital business evolves, we will continue to identify and focus our go-to-market efforts on industry segments that need our value proposition.
Accelerate global reach and scale. We continue to evaluate expansion opportunities in select markets based on customer demand. In January 2016,April 2018, we closedpurchased the TelecityGroup1.6 million-square foot Infomart Building™ in Dallas, including its operations and tenants, where we had already been operating four data centers. Also, in April 2018, we completed our acquisition in Europe, expanding Equinix's global interconnection platform to 150of Australian data center provider Metronode and its 10 data centers, which expanded our operations into Adelaide, Brisbane, Canberra and Perth, and added scale in 41 metros. In December 2016, we announced the signing of a definitive agreement to acquire a portfolio of Verizon’s data centers in 24 sites, consisting of 29Melbourne and Sydney. This acquisition tripled our Australian data center buildings acrossfootprint to 15 metro areas. This strategic acquisition will further strengthensites. Careful, steady expansion has been key to our global platform by increasinggrowth strategy since our founding, as we seek to offer our customers interconnection in the U.S. and Latin America and accelerate Equinix's penetrationopportunities ahead of demand. As of the enterprise and strategic market sectors, including government and energy. In 2016, we also added capacity across our global footprint by opening TY5, our fifth IBX in Tokyo and SY4, our fourth IBX in Sydney. We have also opened AD1, our first IBX in Abu Dhabi, DX2, our second IBX in Dubai, LD10, our sixth IBX in London, and SP3, our third data center in São Paulo, in Q1 2017. At the closeend of the Verizon data center acquisition, expected in mid-2017,2018, Equinix's total global footprint is expectedhad expanded to be 179200 data centers in 4352 markets and approximately 17 million gross square feet acrossin the Americas, EuropeEMEA and Asia-Pacific.
We expect to continue to execute our global expansion strategy in a cost-effective and disciplined manner through a combination of acquiring existing data centers through lease or purchase, acquiring or investing in local data center operators, and building new IBX data centers based on key criteria, such as demand and potential financial return in each market.
Our Customers and Partners
Our customers include carriers, mobile and other bandwidth providers, cloud and IT services providers, content providers, financial companies and global enterprises. We provide each customercompany access to a choice of business partners and solutions based on their colocation, interconnection and managed IT service needs. As of December 31, 2016,2018, we had more than 8,5009,800 customers worldwide.
Customers in our five key customer and partner categories include the following:

Cloud and IT ServicesContent ProvidersEnterpriseFinancial CompaniesFinServ/InsuranceNetwork and Mobile Services
Amazon Web Services
Box Inc.
Carpathia Hosting Inc.
Cisco Systems Inc. CloudSigma
Google Cloud Platform
Datapipe
IBM Cloud
Microsoft Azure and Office 365
NetApp
Oracle Cloud Infrastructure
Salesforce.com
SoftLayerSAP HANA Enterprise
 Cloud and SAP Cloud
 Platform
VMware vCloud Air Cloud
Workday, Inc.
BrightrollCriteo
ContentBridge DIRECTVDirectTV
eBayDiscovery, Inc.
HuluIndex Exchange
LinkedInMovile
Netflix
Priceline.com
Anheuser-Busch InBev
Bechtel
BMC Software Burger King Corporation
Caterpillar, Inc.
CDM Smith
Chevron
GE
Harper Collins Publishers
Ingram Micro
ACTIV Financial Bloomberg
Chicago Board Options Exchange DirectEdge
Quantlab Financial NASDAQ
OMX Group Inc. NYSE Technologies Thomson Reuters

Anheuser-Busch
Aetna
BMC Software
Ericsson
CDM Smith
Colony Brands
Deloitte
DocuSign
Ford Motors
Ingram Micro
Mazda Motor Corp.
Smithfield Foods
Sysco Foods
Weyerhaueser
Wing On
Allianz Technology
of America
Aon
Bloomberg
Chicago Board
Options Exchange
Lincoln Financial
NASDAQ
Options Exchange
PayPal
The Society of
Lloyd's
TIAA
AT&T
British Telecom
China Mobile Comcast
Level 3 Communications Lycamobile
NTT Communications SingTel Ltd.Siemens Mobility Services
Syniverse Technologies
T-MobileT-Systems
TATA Communications Verizon
Vodafone
Customers typically sign renewable contracts of one or more years in length. Our largest customer accounted for approximately 3% of our recurring revenues for the periodsyears ended December 31, 20162018, 2017 and 2015, and 2% of our recurring revenues for the period ended December 31, 2014.2016. Our 50 largest customers accounted for approximately 36%38%, 34%37% and 36% of our recurring revenues for the years ended December 31, 2016, 20152018, 2017 and 2014,2016, respectively.

Our Offerings
Equinix provides a choice of data center offeringsinterconnection solutions and platform services primarily comprised of colocation, interconnection solutions bundled offers and professionalplatform services.
Colocation and Related OfferingsData Center Solutions
Our IBX data centers provide our customers with secure, reliable and robust environments that are necessary for optimum internet commerce interconnection.to aggregate and distribute information globally. Our IBX data centers include multiple layers of physical security, scalable cabinet space availability, on-site trained staff (24x7x365), dedicated areas for customer care and equipment staging, redundant AC/DC power systems and other redundant and fault-tolerant infrastructure systems. Some specifications of offerings provided by individual IBX data centers may differ based on original facility design or market.
Within our IBX data centers, customers can deploy their equipment and interconnect with a choice of networks, cloud SaaS providers or other business partners. We also provide customized solutions for customers looking to package our IBX offerings as part of their complex solutions. Our colocation offerings include:
Cabinets. Our customers have several choices for colocating their networking, server and storage equipment. They can place the equipment in one of our shared or private cages or customize their space. In certain select markets, customers can purchase their own private “suite”"suite" which is walled off from the rest of the data center. As customers’customers' colocation requirements increase, they can expand within their original cage (or suite) or upgrade into a cage that meets their expanded requirements. Customers buy the hardware they place in our IBX data centers directly from their chosen vendors. Cabinets (or suites) are priced with an initial installation fee and an ongoing recurring monthly charge.
Power. Power is an element of increasing importance in customers’customers' colocation decisions. We offer both AC and DC power circuits at various amperages and phases customized to a customer’scustomer's individual power requirements. Power is priced with an initial installation fee and an ongoing recurring monthly charge. We also offer metered power in certain markets.
IBXflex.IBXflex®. IBXflex allows customers to deploy mission-critical operations personnel and equipment on-site at our IBX data centers. Because of the close proximity to their infrastructure within our IBX data centers, IBXflex customers can offer a faster response and quicker troubleshooting solution than those available in traditional colocation facilities. This space can also be used as a secure disaster recovery point for customers’customers' business and operations personnel. This service is priced with an initial installation fee and an ongoing recurring monthly charge.
IBX SmartView™. Equinix IBX SmartView™ offers application programming interface (API) -based DCIM that provides real-time access to environmental and operating information within an Equinix IBX footprint, as if those cages were all on site with the customer. IBX SmartView helps its customers consistently maintain their IBX operations and deployments with alerts and notifications, while enhancing long-term planning with customizable reports.

Smart Hands Services®. The Equinix Smart Hands service enables customers to use our highly trained IBX data center personnel to act as their hands (or eyes and ears) when their own staff cannot be on-site. Smart Hands technicians offer a range of services, from routine equipment inventory and labeling to more complex installations and configuring. Smart Hands technicians also provide technical assistance and troubleshooting services.
Hyperscale Data Centers. Our integration efforts with the major cloud players have provided us with insight into the evolving architecture of the cloud. Today, a large number of private interconnection nodes for the major cloud players are located in Equinix facilities. In addition, we are in discussions with a targeted set of hyperscale customers to develop capacity to serve their larger footprint needs. We are leveraging the combination of existing capacity and dedicated hyperscale builds to meet these needs in a handful of key markets.
Interconnection Solutions
Our interconnection solutions are evolving to enable high-performance, secure, scalable, reliable and cost-effective interconnection and traffic exchange between Equinix customers.customers across our global platform. These interconnection solutions are either on a one-to-one basis with direct cross connects or on a one-to-many basis through one of our EquinixECX Fabric or other exchange solutions. In the peering community, we play an important industry leadership role by acting as the relationship broker between parties who would like to interconnect within our IBX data centers or between regionally distributed IBX data centers. Our staff holds or has held significant positions in many leading industry groups, such as the North American Network Operators’Operators' Group (NANOG) and the Internet Engineering Task Force (IETF). Members of our staff have published industry-recognized white papers and strategy documents in the areas of peering and interconnection, many of which are used by other institutions worldwide in furthering the education and promotion of this important set of solutions. We expect to continue to develop additional solutions related to traffic exchange that will allow our customers to leverage the critical mass of networks, cloud services providers, and many important financial services and e-commerce industry leaders now available in our IBX data centers.
Our current interconnection solutions are comprised of the following:
Physical Cross Connect/Direct Interconnections. Customers needing to directly and privately connect to another IBX data center customer can do so through single or multi-mode fiber. These cross connections are the physical link between customers and can be implemented within 24 hours of request. Cross-connect offerings are priced with an initial installation fee and an ongoing monthly recurring charge.
Equinix Internet Exchange™. Customers may choose to connect to and peer through the central switching fabric of our Equinix Internet Exchange, rather than purchase a direct physical cross connection. With a connection to this switch, a customer can aggregate multiple interconnects over one physical connection with multiple, linked 100-gigabit ports of capacity, instead of purchasing individual physical cross connects. The offering is priced per IBX data center with an initial installation fee and an ongoing monthly recurring charge.
Equinix Metro Connect. Customers who are located in one IBX data center may need to interconnect with networks or other customers located in an adjacent or nearby IBX data center in the same metro area. Metro Connect allows customers to seamlessly

interconnect between IBX data centers at capacities up to 100 Gigabits per second level. Metro Connect offerings are priced with an initial installation fee and an ongoing monthly recurring charge dependent on the capacity purchased by the customer.second.
Internet Connectivity Services.Connectivity. Customers who are installing equipment in our IBX data centers generally require IP connectivity or bandwidth services.access. Although many large customers prefer to contract directly with carriers, we offer customers the ability to contract for these servicesIP connectivity and bandwidth access through us from any of the major bandwidth providers in that data center. This servicebandwidth access is targeted to customers who require a single bill and a single point of support through Equinix for theirthe entire contract through Equinix for their bandwidth needs. Internet connectivity services are priced with an initial installation fee and an ongoing monthly recurring charge based on the amount of bandwidth committed.
Equinix Cloud Exchange™Exchange Fabric™ (ECX Fabric™). The ECX Fabric directly and securely connects distributed infrastructure and digital ecosystems on Platform Equinix Cloud Exchange is an advanced interconnection solution thatvia global, software-defined interconnection. It enables seamless, on-demand, direct access to multiple clouds from multiple networks around the world. Cloud Exchange provides virtualized, private direct connections that bypass the internet to provide better security and performance with a range of bandwidth options. It allows businesses to connectcustomize their connectivity to many participants (clouds, networks, enterprise customers) overpartners, customers and suppliers through an interface that provides all the benefits companies have come to expect from "as-a-service" models. This includes real-time provisioning via a portal or API, pay-as-you-go billing increments and the removal of friction in establishing elastic connectivity between metros. The ECX Fabric is designed for scalability, agility and virtualized connectivity. Through a single physical port, enabling dynamic bandwidth allocation among various parties. The Equinix Cloud Exchange Portalcustomers can discover and APIs simplify the process of provisioning and managing connections to multiple cloud services and networks. Equinix Cloud Exchange offerings are priced with an initial installation fee and an ongoing monthly recurring charge dependentreach anyone on the capacity purchased by the customer.demand, locally or across metros.
Equinix Performance Hub™
The new ECX Fabric capabilities are now available in the Americas, EMEA and APAC regions, including Amsterdam, Atlanta, Chicago, Dallas, Denver, Dublin, Düsseldorf, Frankfurt, Geneva, Helsinki, Hong Kong, London, Los Angeles, Manchester, Melbourne, Miami, Milan, Munich, New York, Osaka, Paris, São Paulo, Seattle, Silicon Valley, Singapore, Stockholm, Sydney, Tokyo, Toronto, Washington, D.C. and Zurich.

Equinix Performance Hub enables companies to securely and directly connect to leading public clouds, easily deploy a private cloud, and lay the foundation of a hybrid cloud. Performance Hub solutions are extensions of a company’s IT network that reside within Equinix data centers. An®
The Equinix Performance Hub places corporate IT resources near large user populations in IBX data centers connected to many networks and clouds.clouds near large user populations. Performance Hub solutions can be implemented gradually, without closing or moving out of existing data centers. Performance Hub allows companies to efficiently deploy resources at the edge, closest to their end-users, enabling an affordable, low-risk approach to improving network performance and reducing costs. This distributed, connectivity-driven approach to data center computing has been provenshown by Gartner, 451 Group, and many enterprise customers to provide dramatic benefits in application and network performance, as well as in business and IT agility. The Performance Hub offering is priced per IBX data center with an initial installation fee and an ongoing recurring monthly charge.

Equinix Data Hub™Hub®

Equinix Data Hub is an extension of the Equinix Performance Hub™Hub framework and is a data center solution that addresses enterprise demandsdemand for real-time analytics, IoT, data collection and data protection. Data Hub empowers organizations to build a globally optimized data platform located in strategic data centers around the world and maintain full control over business-critical data for any and all security and compliance demands. Data Hub use cases include:include cloud integrated tiered storage, big data analytics infrastructures and data protection and replication. The Data Hub offering is priced per IBX data center with an initial installation fee and an ongoing recurring monthly charge.

Equinix ProfessionalPlatform Services

Exponential increases in data trafficOur platform services offer the expertise and growing demand for interconnection mean pressure on companiestools to stay competitive. They need a partner with deep knowledge of the global terrain and trends so they can maximize new technology and information and meet the needs of dispersed and demanding end users. Equinix Professional Services are uniquely positioned to be that partner. Equinix experts help companies tap the resourcescreate and opportunities for innovation available on agrow as digital businesses. Our experienced professionals are supporting leading global platform of 8,500+ companies in 41 markets, including more than 1,400 network service providerstheir digital transformation projects and 2,500 cloudknow which strategies, systems, and IT services providers. Our consultants have the know-how and experience to help customers introduce newarchitectures best support business goals in a variety of industries, leveraging existing and emerging technologies.

Equinix SmartKey™. SmartKey is a global SaaS-based, secure key management and cryptography service offerings, optimize IT architectures, simplify hybridoffered on cloud-neutral Platform Equinix. It provides a secure encryption key service that simplifies data and multi-cloud migrationsapplications access management across on-premises and stay up-and-running.hybrid/multicloud infrastructures, whether they are inside or outside of an Equinix professional services are priced at the project level and include:IBX data center.
Cloud Consulting Services. MigrationMany companies are migrating to a hybrid or multi-cloudmulticloud environment comes with uncertainty, but it’s also become essential: The cloud’sas the cloud's cost advantages and flexibility are too critical to forego in an era of rising electronic collaboration and user expectations. Equinix's Professional Services for Cloud are designed to take the mystery out offacilitate cloud migration with a detailed assessment, design and implementation process that gives customers a faster, smoother path to the cloud. The 2,5002,900 cloud and IT service providers and 1,4001,800 network service providers within Equinix's network help our experts tailor cloud deployments to individual business needs and maximize their cloud performance, savings and security while ensuring future resilience and agility.
Network and IOA Transformation Services. DigitalWhile digital transformation creates new revenue streams, from information about an organizations’ physical operations, it also creates congestion and performance issues for an organization’sorganization's legacy network. The

growth in data, applications and locations that must be served by a digital enterprise, plus the reduction in latency required by real-time applications, all put enormous stress on legacy IT infrastructure. Equinix’sEquinix's Professional Services for network and IOA transformation helps companies plan and build their future network and infrastructure architecture,architectures and get ready forto tackle the challenges of digital business today and tomorrow.
Global Solutions Architects™Architects
Equinix Global Solutions Architects (GSAs) are industry experts, innovators and thought leaders, committed to helping companies deploy their IT infrastructures in ways that best serve their business needs and fully exploit the advantages offered by Equinix’sEquinix's global interconnection platform. Equinix’sEquinix's GSAs have decades of combined experience in cloud deployments, facility operations, business analytics and network design and operations. They work as extensions of our customers’customers' IT and technology teams, helping to efficiently deploy high-performance solutions, advising them on service provider choices, and designing IT architectures that help them reach today’s goals and anticipate tomorrow’s requirements.architectures.
Solution Validation Centers™Centers
Equinix Solution Validation Centers (SVCs) are state-of-the-art facilities that allow customers to test and fine-tune their IT infrastructure, network, cloud and data center rollouts in a real-world environment before full build-out and deployment. Customers can measure how their applications perform when movedthey move off legacy systems, spot and address unforeseen technical barriers, and optimize various infrastructure components, network connections and applications. Our SVCs operate in 18 strategic markets globally, helping companies reduce risk and maximize their IT investments.
Smart Hands Services™
The Equinix Smart HandsMarketplace
Marketplace is a service enablesfor customers that helps them innovate and grow their business by connecting them to userich industry ecosystems and qualified buyers and sellers within our highly trained IBX data center personnel to act as their hands (or eyescenters and ears) when their own staff can’t be on-site. Smart Hands technicians offer a range of services, from routine equipment inventory and labeling to more complex installations and configuring. Smart Hands technicians also provide technical assistance and troubleshooting services.in the surrounding markets.
Equinix Customer Portal
The Equinix Customer Portal offers all-day, every day24/7 access to our customer care personnel, so customers can report problems, schedule shipments or order Smart Hands services at any time of the day or night. Equinix conducts a significant portionnumber of its transactions with its customers via this portal.
Business Continuity Trading Rooms
Trading infrastructure is mission-critical for financial firms worldwide, and our Business Continuity Trading Rooms (BCTRs) ensure that trading doesn’tdoes not stop, even if primary operations are knocked off-line or are disabled. A BCTR backs up our customers’customers' trading operations in one of our secure data center facilities, right down to telephone services and multiple desktop monitors. BCTR offerings are protected with backup generators and uninterruptible power supply to guarantee reliability and deliver peace of mind.

Sales and Marketing

Sales. We use a direct sales force and channel marketing program to market our offerings to global enterprises, content providers, financial companies, and mobile and network service providers. We organize our sales force by customer type, as well as by establishing a sales presence in diverse geographic regions, which enables efficient servicing of the customer base from a network of regional offices. In addition to our worldwide headquarters located in Silicon Valley, we have established an Asia-Pacific regional headquarters in Hong Kong and a Europeanan EMEA regional headquarters in Amsterdam. Our AmericasWe also operate a network of sales offices are locatedto deploy our field sales and support teams in Ashburn, Boston, Chicago, Los Angeles, New York, Rio de Janeiro, São Paulo, Silicon Valley and Toronto. Our EMEA sales offices are located in Amsterdam, Dubai, Dublin, Dusseldorf, Enschede, Frankfurt, Geneva, Helsinki, London, Manchester, Milan, Munich, Paris, Sofia, Stockholm, Warsaw and Zurich. Our Asia-Pacific sales offices are located in Beijing, Hong Kong, Jakarta, Osaka, Seoul, Shanghai, Singapore, Sydney, Melbourne and Tokyo.our major markets across all three regions.
Our sales team works closely with each customer to foster the natural network effect of our IBX model, resulting in access to a wider potential customer base via our existing customers. As a result of the IBX interconnection model, IBX data center participants often encourage their customers, suppliers and business partners to also locate in our IBX data centers. These customers,

suppliers and business partners, in turn, encourage their business partners to locate in our IBX data centers, resulting in additional customer growth. This network effect significantly reduces our new customer acquisition costs. In addition, large network providers, cloud providers or managed service providers may refer customers to Equinix as a part of their total customer solution. Equinix also focuses the selling by our vertical sales specialists on supporting specific industry requirements for network, mobile, and media and content providers, financial services, cloud computing, systems integrators and enterprise customer segments.
The Equinix channel program adds an ecosystem of leading system integrators and service providers, from managed to network to cloud services. They help our customers design and deploy the right cloud and IT solutions enterprises needneeded to reach their customers, employees and supply chains. Our channel partners understand how to leverage and integrate the advantages of the Platform Equinix™Equinix global footprint, high performance connectivity options and global supply-chain ecosystems to deliver solutions that precisely meet our customers’customers' performance, reliability and cost requirements.
Marketing. To support our sales efforts and to actively promote our brand in the Americas, Asia-Pacific and EMEA, we conduct comprehensive marketing programs. Our marketing strategies include active public relations and ongoing customer communications programs. Our marketing efforts are focused on major business and trade publications, online media outlets, industry events and sponsored activities. Our staff holds leadership positions in key networking organizations, and we participate in a variety of internet, enterprise IT, computer and financial industry conferences, placing our officers and employees in keynote speaking engagements at these conferences. We also regularly measure customer satisfaction levels and host key customer forums to ensure customer needs are understood and incorporated in product and service planning efforts. From a brand perspective, we build recognition through our website, external blog and social media channels by sponsoring or leading industry technical forums, by participating in internet industry standard-setting bodies and through advertising, paid social media and online campaigns. We continue to develop and host industry educational forums focused on peering technologies and practices for ISPs and content providers.

Our Competition
While a large number of enterprises own their own data centers, many others outsource some or all of their requirements to multi-tenant internet data center (MTDC) facilities, such as those operated by Equinix. We believe that the outsourcing trend is likely to accelerate in the coming years. The global MTDC market is highly fragmented. It is estimated that Equinix is one of more than 6501,200 companies that provide internet data centerMTDC offerings around the world, ranging in size from firms with a single data center in a single market to firms in over 20 markets. Equinix competes with these firms which vary in terms of their data center offerings, including:
Colocation Providers
Colocation data centers are a type of internet data centerMTDC that can also be referred to as “retail”"retail" data center space. Typically, colocation data center space is offered on the basis of individual racks/cabinets or cages ranging from 500 to 10,000 square feet in size. Typical customers of colocation providers include:
Large enterprises with significant IT expertise and requirements
Small and medium businesses looking to outsource data center requirements
Cloud and network service providers
Electronic trading, digital payments and financial services companies
Internet application providers
Major internet content, entertainment and social networking providers
Shared, dedicated and managed hosting providers
Mobile and network service providers
Content delivery networks

Full facility maintenance and systems, including fire suppression, security, power backup and HVAC, are routinely included in managed colocation offerings. A variety of additional services are typically available, including remote hands technician services and network monitoring services.
Providers in addition to Equinix that offer colocation both globally and locally include firms such as AT&T, COLT and NTT.
Carrier-Neutral Colocation Providers
In addition to data center space and power, colocation providers also offer interconnection. Some of these providers, known as network or carrier-neutral colocation providers, can offer customers the choice of hundreds of network service providers or ISPs to choose from. Typically, customers use interconnection to buy ethernet or internet connectivity, connect to VoIP telephone networks, perform financial exchange and settlement functions or perform business-to-business e-commerce. Carrier-neutral data centers are often located in key network hubs around the world, such as New York, Ashburn, Va., London, Amsterdam, Singapore and

Hong Kong. Two types of data center facilities offering carrier-neutral colocation are used for many network-to-network interconnections:
A Meet Me Room (MMR) is typically a smaller space, generally 5,000 square feet or less, located in a major carrier hotel and often found in a wholesale data center facility.
A carrier-neutral data center is generally larger than an MMR and may be a stand-alone building separate from existing carrier hotels.

Providers in addition to Equinix that we believe could be defined as offering carrier-neutral colocation include CoreSite, Digital Realty Trust, Global Switch, Interxion and Telehouse.
Wholesale Data Center Providers
Wholesale data center providers lease data center space that is typically offered in cells or pods (i.e., individual white-space rooms) ranging in size from 10,000 to 20,000 square feet or larger. Wholesale data center offerings are targeted to both enterprises and colocation providers. These data centers primarily provide space and power without additional services like technicians, remote hands services or network monitoring (although other tenants might offer such services).
Sample wholesale data center providers include Digital Realty Trust DuPont Fabros Technology, e-Shelter and Global Switch.

Managed Hosting Providers
Managed hosting services are provided by several firms that also provide data center colocation services.solutions. Typically, managed hosting providers can manage server hardware that is owned by either the hosting provider or the customer. They can also provide a combination of comprehensive systems administration, database administration and sometimes application management services. Frequently, this results in managed hosting providers “running”"running" the customer’scustomer's servers, although such administration is frequently shared. The provider may manage such functions as operating systems, databases, security and patch management, while the customer will maintain management of the applications riding on top of those systems.
The full list of potential services that can be offered as part of managed hosting is substantial and includes services such as remote management, custom applications, helpdesk, messaging, databases, disaster recovery, managed storage, managed virtualization, managed security, managed networks and systems monitoring. Managed hosting services are typically used for:
Application hosting by organizations of any size, including large enterprises
Hosted or managed messaging, including Microsoft Exchange and other complex messaging applications
Complex or highly scalable web hosting or e-commerce websites
Managed storage solutions (including large drive arrays or backup robots)
Server disaster recovery and business continuity, including clustering and global server load balancing
Database servers, applications and services

Examples of managed hosting providers include: AT&T, CenturyLink, NaviSite, Rackspace, SunGard and Verizon Business.
Unlike other providers whose core businesses are bandwidth or managed services, we focus on neutral interconnection hubs for cloud and IT service providers, content providers, financial companies, enterprises and network service providers. As a result, we do not have the limited choices found commonly at other hosting/colocation companies. We compete based on the quality of our IBX data centers, our ability to provide a one-stop global solution in our Americas, EMEA and Asia-Pacific locations, the performance and diversity of our network- and cloud-neutral strategy, and the economic benefits of the aggregation of top network, cloud and business ecosystems under one roof. We expect to continue to benefit from severalprevailing industry trends, including the need for contracting with multiple networks due to create a “digital edge”, the uncertainty ingrowth of proximity communities, the telecommunications market; customers’ increasing power requirements; enterprise customers’ increased useadoption of virtualization and outsourcing;IOT, AI, 5G cloud computing, the continued growth of broadband and significant growth in Ethernet as a network alternative;internet traffic and the growth in mobile applications.increased power and cooling requirements of new generations of IT equipment.
Our Business Segment Financial Information
We currently operate in three reportable segments comprised of our Americas, EMEA and Asia-Pacific geographic regions. Information attributable to each of our reportable segments is set forth in Note 17 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.

Employees
We had 5,9937,903 employees as of December 31, 2016.2018. We had 2,5103,480 employees based in the Americas, 2,0632,751 employees based in EMEA and 1,4201,672 employees based in Asia-Pacific. Of those employees, 2,8273,773 employees were in engineering and operations, 1,1771,429 employees were in sales and marketing and 1,9892,701 employees were in management, finance and administration.
Available Information
We were incorporated in Delaware in June 1998. We are required to file reports under the Securities Exchange Act of 1934, as amended, with the Securities and Exchange Commission. You may read and copy our materials on file with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Washington, DC 20549. You may obtain information regarding the SEC’s Public Reference Room by calling the SEC at 1-800-SEC-0330.Commission ("SEC"). The SEC also maintains an internet website at http://www.sec.gov that contains reports, proxy and information statements and other information.
You may also obtain copies of our annual reports on Form 10-K, our quarterly reports on Form 10-Q and our current reports on Form 8-K, and any amendments to such reports, free of charge by visiting the Investor Relations page on our website, www.equinix.com. These reports are available as soon as reasonably practical after we file them with the SEC. Information contained on our website is not part of this Annual Report on Form 10-K.

ITEM 1A.RISK FACTORS
In addition to the other information contained in this report, the following risk factors should be considered carefully in evaluating our business and us:
Risks RelatedAcquisitions present many risks, and we may not realize the financial or strategic goals that were contemplated at the time of any transaction.
We have completed numerous acquisitions and expect to make additional acquisitions in the Acquisitionfuture. These may include (i) acquisitions of businesses, products, solutions or technologies that we believe to be complementary, (ii) acquisitions of new IBX data centers or real estate for development of new IBX data centers or (iii) acquisitions through investments in local data center operators. We may pay for future acquisitions by using our existing cash resources (which may limit other potential uses of our cash), incurring additional debt (which may increase our interest expense, leverage and Integrationdebt service requirements) and/or issuing shares (which may dilute our existing stockholders and have a negative effect on our earnings per share). Acquisitions expose us to potential risks, including:
the possible disruption of our ongoing business and diversion of management's attention by acquisition, transition and integration activities, particularly when multiple acquisitions and integrations are occurring at the same time;
our potential inability to successfully pursue or realize some or all of the Verizon Assets.
Consummation of the Verizon Asset Purchase is subject to the satisfaction of certain conditions which, if not satisfied, may result in the Verizon Asset Purchase not proceeding.
On December 6, 2016, we entered into a transaction agreementanticipated revenue opportunities associated with Verizon, pursuant to which we agreed to acquire Verizon’s colocation services business at 24 data center sites (the “Business”), for a cash purchase price of approximately $3.6 billion (the “Verizon Asset Purchase”). We expect to fund the Verizon Asset Purchase with a combination of cash on hand and the proceeds of debt and equity financings. The completion of the Verizon Asset Purchase is subject to closing conditions, including:an acquisition or investment;
the absence of any injunction, law or orderpossibility that makes unlawful the consummation of the Verizon Asset Purchase;
the material accuracy of the representations and warranties of, and the material compliance with covenants by, the other party; and
the delivery of required closing documents.
Our obligation to consummate the Verizon Asset Purchase is also conditioned on, among other things:
the absence of any pending or threatened proceeding brought by a governmental authority pursuant to applicable antitrust laws that seeks to enjoin or preclude the closing of the Verizon Asset Purchase or seeks to impose certain restrictions on us or the Business; and
no material adverse effect having occurred with respect to the Business.
Although we believe that the conditions will be satisfied, it is possible that the parties may not satisfy these conditions, or that they may not be satisfied by September 6, 2017 (the “End Date”), providedable to successfully integrate acquired businesses, or businesses in which we invest, or achieve anticipated operating efficiencies or cost savings;
the possibility that the End Date may be extended to December 6, 2017 in certain circumstances, or that they may only be satisfied subject to certain conditions or undertakings whichannounced acquisitions may not be acceptable.
We cannot provide any assurance thatcompleted, due to failure to satisfy the Verizon Asset Purchase will be completed,conditions to closing as a result of:
an injunction, law or order that makes unlawful the consummation of the acquisition;
inaccuracy or breach of the representations and warranties of, or the non-compliance with covenants by, either party;
the nonreceipt of closing documents; or
for other reasons;
the possibility that there will notcould be a delay in the completion of the Verizon Asset Purchase. Any delayan acquisition, which could, among other things, result in additional transaction costs, loss of revenue or other negative effects resulting from uncertainty about completion of the Verizon Asset Purchase.respective acquisition;
Additionally, either party may terminate the Verizon Asset Purchasedilution of our existing stockholders as a result of our issuing stock as consideration in a transaction agreement upon a breach byor selling stock in order to fund the other partytransaction;
the possibility of any representation, warranty or covenant made by such breaching party in the transaction agreement, such that the applicable condition to closing is not satisfied and such breach is not cured by the earlier of 30 days after written notice or the End Date. The transaction agreement also provides that upon termination of the Verizon Asset Purchase transaction agreement under specified antitrust-related circumstances, we will pay to Verizon a termination fee of up to $200 million.    
We also have a $2 billion bridge loan commitment to complete the Verizon Asset Purchase that we intend to replace with permanent financing prior to the closing. Ifcustomer dissatisfaction if we are unable to secure alternative financing, achieve levels of quality and stability on par with past practices;
the termspossibility that we will be unable to retain relationships with key customers, landlords and/or suppliers of the bridge loan wouldacquired businesses, some of which may terminate their contracts with the acquired business as a result of the acquisition or which may attempt to negotiate changes in their current or future business relationships with us;
the possibility that we could lose key employees from the acquired businesses before integrating them;
the possibility that we may be more costlyunable to integrate or migrate IT systems, which could create a risk of errors or performance problems and could affect our ability to meet customer service level obligations;
the potential deterioration in our ability to access credit markets due to increased leverage;
the possibility that our customers may not accept either the existing equipment infrastructure or the "look-and-feel" of a new or different IBX data center;
the possibility that additional capital expenditures may be required or that transaction expenses associated with acquisitions may be higher than anticipated;
the possibility that required financing to fund an acquisition may not be available on acceptable terms or at all;
the possibility that we may be unable to obtain required approvals from governmental authorities under antitrust and competition laws on a timely basis or at all, which could, among other things, delay or prevent us from completing an acquisition, limit our existing debt obligations.ability to realize the expected financial or strategic benefits of an acquisition or have other adverse effects on our current business and operations;
the possible loss or reduction in value of acquired businesses;
the possibility that future acquisitions may present new complexities in deal structure, related complex accounting and coordination with new partners, particularly in light of our desire to maintain our qualification for taxation as a REIT;

the possibility that we may not be able to prepare and issue our financial statements and other public filings in a timely and accurate manner, and/or maintain an effective control environment, due to the strain on the finance organization when multiple acquisitions and integrations are occurring at the same time;
the possibility that future acquisitions may trigger property tax reassessments resulting in a substantial increase to our property taxes beyond that which we anticipated;
the possibility that future acquisitions may be in geographies and regulatory environments to which we are unaccustomed and we may become subject to complex requirements and risks with which we have limited experience;
the possibility that carriers may find it cost-prohibitive or impractical to bring fiber and networks into a new IBX data center;
the possibility of litigation or other claims in connection with, or as a result of, an acquisition, including claims from terminated employees, customers, former stockholders or other third parties;
the possibility that asset divestments may be required in order to obtain regulatory clearance for a transaction;
the possibility of pre-existing undisclosed liabilities, including, but not limited to, lease or landlord related liability, environmental liability or asbestos liability, for which insurance coverage may be insufficient or unavailable, or other issues not discovered in the diligence process; and
the possibility that we receive limited or incorrect information about the acquired business in the diligence process. For example, we sometimes do not receive all of the customer contracts associated with our acquisitions in the diligence process, which affects our visibility into customer termination rights and could expose us to additional liabilities.
The occurrence of any of these risks could have a material adverse effect on our business, results of operations, financial condition or cash flows. If the Verizon Asset Purchasean acquisition does not proceed or is materially delayed for any reason, the price of our common stock may be adversely impacted and we will not recognize the anticipated benefits of the Verizon Asset Purchase.acquisition.
We cannot assure that the price of any future acquisitions of IBX data centers will be similar to prior IBX data center acquisitions. In fact, we expect costs required to build or render new IBX data centers operational to increase in the future. If our revenue does not keep pace with these potential acquisition and expansion costs, we may not be able to maintain our current or expected margins as we absorb these additional expenses. There is no assurance we would successfully overcome these risks, or any other problems encountered with these acquisitions.
Our substantial debt could adversely affect our cash flows and limit our flexibility to raise additional capital.
We have a significant amount of debt and may need to incur significant transactionadditional debt to support our growth. Additional debt may also be incurred to fund future acquisitions, any future special distributions, regular distributions or the other cash outlays associated with maintaining our qualification for taxation as a REIT. As of December 31, 2018, our total indebtedness (gross of debt issuance cost, debt discount, and acquisition-related integration costsdebt premium) was approximately $11.4 billion, our stockholders' equity was $7.2 billion and our cash, cash equivalents, and investments totaled $0.6 billion. In addition, as of December 31, 2018, we had approximately $1.9 billion of additional liquidity available to us from our $2.0 billion revolving credit facility. Some of our debt contains covenants which may limit our operating flexibility. In addition to our substantial debt, we lease a majority of our IBX data centers and certain equipment under non-cancellable lease agreements, some of which are accounted for as operating leases. As of December 31, 2018, our total minimum operating lease commitments under those lease agreements, excluding potential lease renewals, was approximately $2.0 billion, which represents off-balance sheet commitments.
Our substantial amount of debt and related covenants, and our off-balance sheet commitments, could have important consequences. For example, they could:
require us to dedicate a substantial portion of our cash flow from operations to make interest and principal payments on our debt and in connectionrespect of other off-balance sheet arrangements, reducing the availability of our cash flow to fund future capital expenditures, working capital, execution of our expansion strategy and other general corporate requirements;
increase the likelihood of negative outlook from our credit rating agencies;
make it more difficult for us to satisfy our obligations under our various debt instruments;
increase our cost of borrowing and even limit our ability to access additional debt to fund future growth;
increase our vulnerability to general adverse economic and industry conditions and adverse changes in governmental regulations;
limit our flexibility in planning for, or reacting to, changes in our business and industry, which may place us at a competitive disadvantage compared with the consummationour competitors;
limit our operating flexibility through covenants with which we must comply, such as limiting our ability to repurchase shares of our common stock;

limit our ability to borrow additional funds, even when necessary to maintain adequate liquidity, which would also limit our ability to further expand our business; and
make us more vulnerable to increases in interest rates because of the Verizon Asset Purchase.variable interest rates on some of our borrowings to the extent we have not entirely hedged such variable rate debt.
The occurrence of any of the foregoing factors could have a material adverse effect on our business, results of operations and financial condition.
We expectmay also need to incur significant costsrefinance a portion of our outstanding debt as it matures. There is a risk that we may not be able to refinance existing debt or that the terms of any refinancing may not be as favorable as the terms of our existing debt. Furthermore, if prevailing interest rates or other factors at the time of refinancing result in connection with consummatinghigher interest rates upon refinancing, then the Verizon Asset Purchaseinterest expense relating to that refinanced indebtedness would increase. These risks could materially adversely affect our financial condition, cash flows and integratingresults of operations.
Adverse global economic conditions and credit market uncertainty could adversely impact our business and financial condition.
Adverse global economic conditions and uncertain conditions in the Verizon assets into Equinix. However,credit markets have created, and in the actual costs incurredfuture may exceed those estimatedcreate, uncertainty and thereunpredictability and add risk to our future outlook. An uncertain global economy could also result in churn in our customer base, reductions in revenues from our offerings, longer sales cycles, slower adoption of new technologies and increased price competition, adversely affecting our liquidity. The uncertain economic environment could also have an impact on our foreign exchange forward contracts if our counterparties' credit deteriorates or they are otherwise unable to perform their obligations. Finally, our ability to access the capital markets may be further unanticipated costsseverely restricted at a time when we would like, or need, to do so which could have an impact on our flexibility to pursue additional expansion opportunities and maintain our desired level of revenue growth in the future.
If we cannot effectively manage our international operations, and successfully implement our international expansion plans, or comply with evolving laws and regulations, our revenues may not increase, and our business and results of operations would be harmed.
For the years ended December 31, 2018, 2017 and 2016, we recognized approximately 55%, 55% and 57%, respectively, of our revenues outside the U.S. We currently operate outside of the U.S. in Canada, Brazil, Colombia, EMEA and Asia-Pacific.
To date, the network neutrality of our IBX data centers and the assumptionvariety of knownnetworks available to our customers has often been a competitive advantage for us. In certain of our acquired IBX data centers in the Asia-Pacific region, the limited number of carriers available reduces that advantage. As a result, we may need to adapt our key revenue-generating offerings and unknown liabilities. Whilepricing to be competitive in those markets. In addition, we are currently undergoing expansions or evaluating expansion opportunities outside of the U.S. Undertaking and managing expansions in foreign jurisdictions may present unanticipated challenges to us.
Our international operations are generally subject to a number of additional risks, including:
the costs of customizing IBX data centers for foreign countries;
protectionist laws and business practices favoring local competition;
greater difficulty or delay in accounts receivable collection;
difficulties in staffing and managing foreign operations, including negotiating with foreign labor unions or workers' councils;
difficulties in managing across cultures and in foreign languages;
political and economic instability;
fluctuations in currency exchange rates;
difficulties in repatriating funds from certain countries;
our ability to obtain, transfer or maintain licenses required by governmental entities with respect to our business;
unexpected changes in regulatory, tax and political environments such as the United Kingdom's pending withdrawal from the European Union ("Brexit");
our ability to secure and maintain the necessary physical and telecommunications infrastructure;
compliance with anti-bribery and corruption laws;
compliance with economic and trade sanctions enforced by the Office of Foreign Assets Control of the U.S. Department of Treasury; and

compliance with evolving governmental regulation with which we have assumedlittle experience.
Geo-political events, such as Brexit, may increase the likelihood of the listed risks to occur. With respect to Brexit, it is possible that the level of economic activity in the United Kingdom and the rest of Europe will be adversely impacted and that we will incur transactionface increased regulatory and integration expenses, there are factors beyondlegal complexities in these regions which could have an adverse impact on our control thatbusiness and employees in EMEA and could adversely affect the total amount or the timingour financial condition and results of such expenses. Many of the expenses that will be incurred, by their nature, are difficult to estimate accurately at the present time.operations. In addition, undercompliance with international and U.S. laws and regulations that apply to our international operations increases our cost of doing business in foreign jurisdictions. These laws and regulations include the transaction agreement, Verizon will contribute specified assetsGeneral Data Protection Regulation (GDPR) and liabilitiesother data privacy requirements, labor relations laws, tax laws, anti-competition regulations, import and trade restrictions, export requirements, economic and trade sanctions, U.S. laws such as the Foreign Corrupt Practices Act and local laws which also prohibit corrupt payments to governmental officials. Violations of these laws and regulations could result in fines, criminal sanctions against us, our officers or our employees, and prohibitions on the acquiredconduct of our business. Any such violations could include prohibitions on our ability to offer our offerings in one or more countries, could delay or prevent potential acquisitions, and could also materially damage our reputation, our brand, our international expansion efforts, our ability to attract and retain employees, our business to newly formed entities, and we will acquire the equity interests of such entities. However, the contributed assets may not be sufficient to operate all aspects of the acquired business. Accordingly, we may have to use assets or resources from our existing business or acquire additional assets in order to operate the acquired business.

As a result, the transaction and integration expenses associated with the Verizon Asset Purchase could, particularly in the near term, exceed the cost savings that we expect to achieve from the streamlining of operations following the completion of the Verizon Asset Purchase.
The anticipated benefits of the Verizon Asset Purchase may not be realized fully and may take longer to realize than expected and there will be numerous challenges associated with integration.
Theoperating results. Our success of the Verizon Asset Purchase will depend,depends, in part, on our ability to anticipate and address these risks and manage these difficulties.
Economic and political uncertainty in developing markets could adversely affect our revenue and earnings.
We conduct business and are contemplating expansion in developing markets with economies and governments that tend to be more volatile than those in the U.S. and Western Europe. The risk of doing business in developing markets such as Brazil, China, Colombia, India, Indonesia, Oman, Russia, Turkey, the United Arab Emirates and other economically volatile areas could adversely affect our operations and earnings. Such risks include the financial instability among customers in these regions, political instability, fraud or corruption and other non-economic factors such as irregular trade flows that need to be managed successfully integratewith the Verizon assets intohelp of the local governments. In addition, commercial laws in some developing countries can be vague, inconsistently administered and retroactively applied. If we are deemed to be not in compliance with applicable laws in developing countries where we conduct business, our prospects and business in those countries could be harmed, which could then have a material adverse impact on our results of operations and financial position. Our failure to successfully manage economic, political and other risks relating to doing business in developing countries and economically and politically volatile areas could adversely affect our business.
Terrorist activity throughout the world and military action to counter terrorism could adversely impact our business.
The continued threat of terrorist activity and other acts of war or hostility contribute to a climate of political and economic uncertainty. Due to existing or developing circumstances, we may need to incur additional costs in the future to provide enhanced security, including cyber security, which could have a material adverse effect on our business and realize the anticipated benefits, including synergiesresults of operations. These circumstances may also adversely affect our ability to attract and cost savings, from the acquisition. If we are unableretain customers, our ability to achieve these objectives within the anticipated time frame, or at all, the anticipated benefits may not be realized fully or at all, or may take longer to realize than expectedraise capital and the valueoperation and maintenance of our IBX data centers.
Sales or issuances of shares of our common stock may adversely affect the market price of our common stock.
Future sales or issuances of common stock or other equity related securities may adversely affect the market price of our common stock, including any shares of our common stock issued to finance capital expenditures, finance acquisitions or repay debt. We have established an "at-the-market" stock offering program (the "ATM Program") through which we may, from time to time, issue and sell shares of our common stock to or through sales agents up to established limits. By the end of 2018, we completed sales having an aggregate gross proceeds of $750.0 million, thereby completing a previously authorized program, and subsequently received authorization for up to an additional $750.0 million. We may also seek authorization to sell additional shares of common stock under the ATM Program once we have reached the current $750.0 million limit which could lead to additional dilution for our stockholders. Please see Note 12 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K for sales of our common stock under the ATM Program to date.
The market price of our stock may continue to be highly volatile, and the value of an investment in our common stock may decline.
The market price of the shares of our common stock has been and may continue to be highly volatile. General economic and market conditions, and market conditions for telecommunications and real estate investment trust stocks in general, may affect the market price of our common stock.
Announcements by us or others, or speculations about our future plans, may also have a significant impact on the market price of our common stock. These may relate to:
our operating results or forecasts;

new issuances of equity, debt or convertible debt by us, including issuances through our ATM Program;
increases in market interest rates and changes in other general market and economic conditions, including inflationary concerns;
changes to our capital allocation, tax planning or business strategy;
our qualification for taxation as a REIT and our declaration of distributions to our stockholders;
changes in U.S. or foreign tax laws;
changes in management or key personnel;
developments in our relationships with customers;
announcements by our customers or competitors;
changes in regulatory policy or interpretation;
governmental investigations;
changes in the ratings of our debt or stock by rating agencies or securities analysts;
our purchase or development of real estate and/or additional IBX data centers;
our acquisitions of complementary businesses; or
the operational performance of our IBX data centers.
The stock market has from time to time experienced extreme price and volume fluctuations, which have particularly affected the market prices for telecommunications companies, and which have often been unrelated to their operating performance. These broad market fluctuations may adversely affect the market price of our common stock. One of the factors that investors may consider in deciding whether to buy or sell our common stock is our distribution rate as a percentage of our stock price relative to market interest rates. If market interest rates increase, prospective investors may demand a higher distribution rate or seek alternative investments paying higher dividends or interest. As a result, interest rate fluctuations and conditions in the capital markets may affect the market value of our common stock. Furthermore, companies that have experienced volatility in the market price of their stock have been subject to securities class action litigation. We may be the target of this type of litigation in the future. Securities litigation against us could result in substantial costs and/or damages, and divert management's attention from other business concerns, which could seriously harm our business.
If we are not able to generate sufficient operating cash flows or obtain external financing, our ability to fund incremental expansion plans may be limited.
Our capital expenditures, together with ongoing operating expenses, obligations to service our debt and the cash outlays associated with our REIT distribution requirements, are, and will continue to be, a substantial burden on our cash flow and may decrease our cash balances. Additional debt or equity financing may not be available when needed or, if available, may not be available on satisfactory terms. Our inability to obtain additional debt and/or equity financing or to generate sufficient cash from operations may require us to prioritize projects or curtail capital expenditures which could adversely affect our results of operations.
Fluctuations in foreign currency exchange rates in the markets in which we operate internationally could harm our results of operations.
We may experience gains and losses resulting from fluctuations in foreign currency exchange rates. To date, the majority of revenues and costs in our international operations are denominated in foreign currencies. Where our prices are denominated in U.S. dollars, our sales and revenues could be adversely affected.
affected by declines in foreign currencies relative to the U.S. dollar, thereby making our offerings more expensive in local currencies. We will incur significant transaction-related costsare also exposed to risks resulting from fluctuations in foreign currency exchange rates in connection with our international operations. To the Verizon Asset Purchase and the integration process. We may encounter material challengesextent we are paying contractors in connection with this integration process, including from, without limitation:
retaining relationships with key customers, landlords and suppliers of the acquired business, some of which may terminate their contracts with the acquired businessforeign currencies, our operations could cost more than anticipated as a result of declines in the Verizon Asset PurchaseU.S. dollar relative to foreign currencies. In addition, fluctuating foreign currency exchange rates have a direct impact on how our international results of operations translate into U.S. dollars.
Although we currently undertake, and may decide in the future to further undertake, foreign exchange hedging transactions to reduce foreign currency transaction exposure, we do not currently intend to eliminate all foreign currency transaction exposure. In addition, REIT compliance rules may restrict our ability to enter into hedging transactions. Therefore, any weakness of the U.S. dollar may have a positive impact on our consolidated results of operations because the currencies in the foreign countries in which we operate may translate into more U.S. dollars. However, if the U.S. dollar strengthens relative to the currencies of the foreign countries in which we operate, our consolidated financial position and results of operations may be negatively impacted as amounts in foreign currencies will generally translate into fewer U.S. dollars. For additional information on foreign currency risks, refer to our discussion of foreign currency risk in "Quantitative and Qualitative Disclosures About Market Risk" included in Item 7A of this Annual Report on Form 10-K.

Our derivative transactions expose us to counterparty credit risk.
Our derivative transactions expose us to risk of financial loss if a counterparty fails to perform under a derivative contract. Disruptions in the financial markets could lead to sudden decreases in a counterparty's liquidity, which could make them unable to perform under the terms of their derivative contract and we may not be able to realize the benefit of the derivative contract.
Changes in U.S. or whichforeign tax laws, regulations, or interpretations thereof, including changes to tax rates, may attemptadversely affect our financial statements and cash taxes.
We are a U.S. company with global subsidiaries and are subject to negotiate changesincome taxes in their current or future business relationships with us;
expandingthe U.S. (although currently limited due to our relationships withtaxation as a REIT) and many foreign jurisdictions. Significant judgment is required in determining our worldwide provision for income taxes. The U.S. government has also recently changed tax laws in the U.S. and the governments of many of the countries in which we operate are actively discussing changes to foreign tax laws. Although we believe that we have adequately assessed and accounted for our potential tax liabilities, and that our tax estimates are reasonable, there can be no certainty that additional taxes will not be due upon audit of our tax returns or as a result of further changes to the tax laws and interpretations thereof. The nature and timing of any future changes to each jurisdiction's tax laws and the impact on our future tax liabilities cannot be predicted with any accuracy but could materially and adversely impact our results of operations and financial position or cash flows.
We may be vulnerable to security breaches which could disrupt our operations and have a material adverse effect on our financial performance and operating results.
We face risks associated with unauthorized access to our computer systems, loss or destruction of data, computer viruses, malware, distributed denial-of-service attacks or other malicious activities. These threats may result from human error, equipment failure or fraud or malice on the part of employees or third parties. A party who is able to compromise the security measures on our networks or the security of our infrastructure could misappropriate either our proprietary information or the personal information of our customers or our employees, or cause interruptions or malfunctions in our operations or our customers' operations. As we provide assurances to our customers that we provide a high level of security, such a compromise could be particularly harmful to our brand and reputation. We may be required to expend significant capital and resources to protect against such threats or to alleviate problems caused by breaches in security. As techniques used to breach security change frequently and are generally not recognized until launched against a target, we may not be able to promptly detect that a cyber breach has occurred, or implement security measures in a timely manner or, if and when implemented, we may not be able to determine the extent to which will subjectthese measures could be circumvented. Any breaches that may occur could expose us to complexincreased risk of lawsuits, regulatory penalties, loss of existing or potential customers, damage relating to loss of proprietary information, harm to our reputation and complianceincreases in our security costs, which could have a material adverse effect on our financial performance and operating results. We maintain insurance coverage for cyber risks, but such coverage may be unavailable or insufficient to cover our losses.    
We offer professional services to our customers where we consult on data center solutions and assist with implementations. We also offer managed services in certain of our foreign jurisdictions outside of the U.S. where we manage the data center infrastructure for our customers. The access to our clients' networks and data, which is gained from these services, creates some risk that our clients' networks or data will be improperly accessed. We may also design our clients' cloud storage systems in such a way that exposes our clients to increased risk of data breach.  If Equinix were held to be responsible for any such a breach, it could result in a significant loss to Equinix, including damage to Equinix's client relationships, harm to our brand and reputation, and legal liability.
We are continuing to invest in our expansion efforts but may not have sufficient customer demand in the future to realize expected returns on these investments.
We are considering the acquisition or lease of additional properties and the construction of new IBX data centers beyond those expansion projects already announced. We will be required to commit substantial operational and financial resources to these IBX data centers, generally 12 to 18 months in advance of securing customer contracts, and we may not have sufficient customer demand in those markets to support these centers once they are built. In addition, unanticipated technological changes could affect customer requirements for data centers, and risks with whichwe may not have built such requirements into our new IBX data centers. Either of these contingencies, if they were to occur, could make it difficult for us to realize expected or reasonable returns on these investments.
Our offerings have a long sales cycle that may harm our revenue and operating results.
A customer's decision to purchase our offerings typically involves a significant commitment of resources. In addition, some customers will be reluctant to commit to locating in our IBX data centers until they are confident that the IBX data center has adequate carrier connections. As a result, we have limited experience;a long sales cycle. Furthermore, we may devote significant time and resources to pursuing a particular sale or customer that does not result in revenues. We have also significantly expanded our sales force in recent years, and it will take time for these new hires to become fully productive.
integrating or migrating IT systems,
Delays due to the length of our sales cycle may materially and adversely affect our revenues and operating results, which may create a risk of errors or performance problems and could affectharm our ability to meet our forecasts and cause volatility in our stock price.
Any failure of our physical infrastructure or offerings, or damage to customer infrastructure within our IBX data centers, could lead to significant costs and disruptions that could reduce our revenue and harm our business reputation and financial results.
Our business depends on providing customers with highly reliable solutions. We must safehouse our customers' infrastructure and equipment located in our IBX data centers and ensure our IBX data centers and non-IBX offices remain operational. We own certain of our IBX data centers, but others are leased by us, and we rely on the landlord for basic maintenance of our leased IBX data centers and office buildings. If such landlord has not maintained a leased property sufficiently, we may be forced into an early exit from the center which could be disruptive to our business. Furthermore, we continue to acquire IBX data centers not built by us. If we discover that these buildings and their infrastructure assets are not in the condition we expected when they were acquired, we may be required to incur substantial additional costs to repair or upgrade the centers.
Our office buildings and IBX data centers are subject to failure resulting from, and infrastructure within such IBX data centers is at risk from, numerous factors, including:
human error;
equipment failure;
physical, electronic and cyber security breaches;
fire, earthquake, hurricane, flood, tornado and other natural disasters;
extreme temperatures;
water damage;
fiber cuts;
power loss;
terrorist acts;
sabotage and vandalism; and
failure of business partners who provide our resale products.
Problems at one or more of our IBX data centers, whether or not within our control, could result in service interruptions or significant equipment damage. We have service level obligations;
commitment obligations to certain customers. As a result, service interruptions or significant equipment damage in our relianceIBX data centers could result in difficulty maintaining service level commitments to these customers and potential claims related to such failures. Because our IBX data centers are critical to many of our customers' businesses, service interruptions or significant equipment damage in our IBX data centers could also result in lost profits or other indirect or consequential damages to our customers. We cannot guarantee that a court would enforce any contractual limitations on transition services from Verizon to operateour liability in the acquired business, andevent that one of our need to develop sustainable alternative arrangements upon expiration or interruption of those transition services;
the diversion of management’s attention from ongoing business concerns and performance shortfalls at Equinixcustomers brings a lawsuit against us as a result of a problem at one of our IBX data centers and we may decide to reach settlements with affected customers irrespective of any such contractual limitations. Any such settlement may result in a reduction of revenue under U.S. generally accepted accounting principles ("GAAP"). In addition, any loss of service, equipment damage or inability to meet our service level commitment obligations could reduce the devotionconfidence of management’s attentionour customers and could consequently impair our ability to obtain and retain customers, which would adversely affect both our ability to generate revenues and our operating results.
Furthermore, we are dependent upon internet service providers, telecommunications carriers and other website operators in the Americas, Asia-Pacific and EMEA regions and elsewhere, some of which have experienced significant system failures and electrical outages in the past. Our customers may in the future experience difficulties due to system failures unrelated to our systems and offerings. If, for any reason, these providers fail to provide the required services, our business, financial condition and results of operations could be materially and adversely impacted.
We are currently making significant investments in our back office information technology systems and processes.  Difficulties from or disruptions to these efforts may interrupt our normal operations and adversely affect our business and operating results.
We have been investing heavily in our back office information technology systems and processes for a number of years and expect such investment to continue for the foreseeable future in support of our pursuit of global, scalable solutions across all geographies and functions that we operate in.  These continuing investments include: 1) ongoing improvements to the Verizon Asset Purchase;customer experience from initial quote to customer billing and our revenue recognition process; 2) integration of recently-acquired operations onto our various information technology systems; and 3) implementation of new tools and technologies to either further streamline
managing
and automate processes, such as our fixed asset procure to disposal process, or to support our compliance with evolving U.S. GAAP, such as the new revenue accounting, derivatives and hedging and leasing standards.  As a larger company;result of our continued work on these projects, we may experience difficulties with our systems, management distraction and significant business disruptions. For example, difficulties with our systems may interrupt our ability to accept and deliver customer orders and may adversely impact our overall financial operations, including our accounts payable, accounts receivables, general ledger, fixed assets, revenue recognition, close processes, internal financial controls and our ability to otherwise run and track our business. We may need to expend significant attention, time and resources to correct problems or find alternative sources for performing these functions. All of these changes to our financial systems also create an increased risk of deficiencies in our internal controls over financial reporting until such systems are stabilized. Such significant investments in our back office systems may take longer to complete and cost more than originally planned. In addition, we may not realize the full benefits we hoped to achieve and there is a risk of an impairment charge if we decide that portions of these projects will not ultimately benefit the company or are de-scoped. Finally, the collective impact of these changes to our business has placed significant demands on impacted employees across multiple functions, increasing the risk of errors and control deficiencies in our financial statements, distraction from the effective operation of our business and difficulty in attracting and retaining employees. Any such difficulties or disruptions may adversely affect our business and operating results.
integrating two unique corporate cultures, whichInadequate or inaccurate external and internal information, including budget and planning data, could lead to inaccurate financial forecasts and inappropriate financial decisions.
Our financial forecasts are dependent on estimates and assumptions regarding budget and planning data, market growth, foreign exchange rates, our ability to remain qualified for taxation as a REIT, and our ability to generate sufficient cash flow to reinvest in the business, fund internal growth, make acquisitions, pay dividends and meet our debt obligations. Our financial projections are based on historical experience and on various other assumptions that our management believes to be reasonable under the circumstances and at the time they are made. However, if our external and internal information is inadequate, our actual results may differ materially from our forecasts and cause us to make inappropriate financial decisions. Any material variation between our financial forecasts and our actual results may also adversely affect our future profitability, stock price and stockholder confidence.
The level of insurance coverage that we purchase may prove to be challenging;inadequate.
retaining key employees, who may experience uncertainty associated withWe carry liability, property, business interruption and other insurance policies to cover insurable risks to our company. We select the Verizon Asset Purchasetypes of insurance, the limits and who may depart before or after the Verizon Asset Purchase because of issues relating todeductibles based on our specific risk profile, the uncertainty and difficultycost of the integration or a desire not to remain with us following the Verizon Asset Purchase;insurance coverage versus its perceived benefit and
unforeseen expenses or delays associated with the Verizon Asset Purchase.
Many general industry standards. Our insurance policies contain industry standard exclusions for events such as war and nuclear reaction. We purchase minimal levels of these factors will be outsideearthquake insurance for certain of our controlIBX data centers, but for most of our data centers, including many in California, we have elected to self-insure. The earthquake and any oneflood insurance that we do purchase would be subject to high deductibles. Any of themthe limits of insurance that we purchase, including those for cyber risks, could result in increased costs, decreases in the amount of expected revenues and diversion of management’s time and energy,prove to be inadequate, which could materially and adversely impact our business, financial condition and results of operations.
Our construction of additional new IBX data centers or IBX data center expansions could involve significant risks to our business.
In order to sustain our growth in certain of our existing and new markets, we may have to expand an existing data center, lease a new facility or acquire suitable land, with or without structures, to build new IBX data centers from the ground up. Expansions or new builds are currently underway, or being contemplated, in many of our markets. These construction projects expose us to many risks which could have an adverse effect on our operating results and financial condition. Some of the risks associated with these projects include:
construction delays;
lack of availability and delays for data center equipment, including items such as generators and switchgear;
unexpected budget changes;
increased prices for building supplies, raw materials and data center equipment;
labor availability, labor disputes and work stoppages with contractors, subcontractors and other third parties;
unanticipated environmental issues and geological problems; and
delays related to permitting from public agencies and utility companies.

Additionally, all construction related projects require us to carefully select and rely on the experience of one or more designers, general contractors, and associated subcontractors during the design and construction process. Should a designer, general contractor or significant subcontractor experience financial problems or other problems during the design or construction process, we could experience significant delays, increased costs to complete the project and/or other negative impacts to our expected returns.
Site selection is also a critical factor in our expansion plans. There may not be suitable properties available in our markets with the necessary combination of high power capacity and fiber connectivity, or selection may be limited. Thus, while we may prefer to locate new IBX data centers adjacent to our existing locations, it may not always be possible. In the event we decide to build new IBX data centers separate from our existing IBX data centers, we may provide interconnection solutions to connect these two centers. Should these solutions not provide the necessary reliability to sustain connection, this could result in lower interconnection revenue and lower margins and could have a negative impact on customer retention over time.
Environmental regulations may impose upon us new or unexpected costs.
We are subject to various federal, state, local and international environmental and health and safety laws and regulations, including those relating to the generation, storage, handling and disposal of hazardous substances and wastes. Certain of these laws and regulations also impose joint and several liability, without regard to fault, for investigation and cleanup costs on current and former owners and operators of real property and persons who have disposed of or released hazardous substances into the environment. Our operations involve the use of hazardous substances and materials such as petroleum fuel for emergency generators, as well as batteries, cleaning solutions and other materials. In addition, we lease, own or operate real property at which hazardous substances and regulated materials have been used in the past. At some of our locations, hazardous substances or regulated materials are known to be present in soil or groundwater, and there may be additional unknown hazardous substances or regulated materials present at sites we own, operate or lease. At some of our locations, there are land use restrictions in place relating to earlier environmental cleanups that do not materially limit our use of the sites. To the extent any hazardous substances or any other substance or material must be cleaned up or removed from our property, we may be responsible under applicable laws, regulations or leases for the removal or cleanup of such substances or materials, the cost of which could be substantial.
Electricity is a material cost in connection with our business, and an increase in the cost of electricity could adversely affect us. The generators that provide electricity to our facilities are subject to environmental laws, regulations and permit requirements that are subject to material change, which could result in increases in generators' compliance costs that may be passed through to us. Regulations recently promulgated by the U.S. EPA could limit air emissions from power plants, restrict discharges of cooling water, and otherwise impose new operational restraints on conventional power plants that could increase costs of electricity. In addition, we are directly subject to environmental, health and safety laws regulating air emissions, storm water management and other issues arising in our business. For example, our emergency generators are subject to state and federal regulations governing air pollutants, which could limit the operation of those generators or require the installation of new pollution control technologies. While environmental regulations do not normally impose material costs upon our operations, unexpected events, equipment malfunctions, human error and changes in law or regulations, among other factors, can lead to violations of environmental laws, regulations or permits, and to additional unexpected operational limitations or costs.
Regulation of greenhouse gas ("GHG") emissions could increase the cost of electricity by reducing amounts of electricity generated from fossil fuels, by requiring the use of more expensive generating methods or by imposing taxes or fees upon electricity generation or use. The U.S. EPA finalized a regulation in October 2015, called the "Clean Power Plan," that was intended to reduce GHG emissions from existing fossil fuel-fired power plants by 32 percent from 2005 levels by 2030. The Clean Power Plan was challenged in court and the rule has not been implemented because litigation is ongoing. In August 2018, the U.S. EPA issued a proposed rule that would replace the Clean Power Plan with the "Affordable Clean Energy" rule. Under the Affordable Clean Energy rule, coal-fired power plants will be required to make efficiency improvements to reduce their GHG emissions.  The U.S. EPA expects to finalize the Affordable Clean Energy rule in 2019, but the rule will likely be challenged in court, which may delay its implementation. While we do not expect these regulatory developments to materially increase our costs of electricity, the costs remain difficult to predict or estimate.
State regulations also have the potential to increase our costs of obtaining electricity. Certain states, like California, also have issued or may enact environmental regulations that could materially affect our facilities and electricity costs. California has limited GHG emissions from new and existing conventional power plants by imposing regulatory caps and by selling or auctioning the rights to emission allowances. Washington, Oregon and Massachusetts have issued regulations to implement similar carbon cap and trade programs, and other states are considering proposals to limit carbon emissions through cap and trade programs, carbon pricing programs and other mechanisms. Some states limit carbon emissions through the Regional Greenhouse Gas Initiative ("RGGI") cap and trade program. State programs have not had a material adverse effect on our electricity costs to date, but due to the market-driven nature of some of the programs, they could have a material adverse effect on electricity costs in the future. Such laws and regulations are also subject to change at any time.

Aside from regulatory requirements, we have separately undertaken efforts to procure energy from renewable energy projects in order to support new renewables development. The costs of procuring such energy may exceed the costs of procuring electricity from existing sources, such as existing utilities or electric service provided through conventional grids. These efforts to support and enhance renewable electricity generation may increase our costs of electricity above those that would be incurred through procurement of conventional electricity from existing sources.
If we are unable to recruit or retain key executives and qualified personnel, our business could be harmed.
In connection with the evolving needs of our customers and our business, and under the direction of our new chief executive officer, we have undertaken a review of our organizational architecture. To the extent that we make changes to our organizational architecture as a result of that review, there can be no assurances that the changes won't result in attrition, or that any changes will result in increased organizational effectiveness. We must also continue to identify, hire, train and retain key personnel who maintain relationships with our customers and who can provide the technical, strategic and marketing skills required for our company's growth. There is a shortage of qualified personnel in these fields, and we compete with other companies for the limited pool of talent.
The failure to recruit and retain necessary key executives and personnel could cause disruption, harm our business and hamper our ability to grow our company.
We may not be able to compete successfully against current and future competitors.
The global multi-tenant data center market is highly fragmented. It is estimated that Equinix is one of more than 1,200 companies that provide these offerings around the world. Equinix competes with these firms which vary in terms of their data center offerings. We must continue to evolve our product strategy and be able to differentiate our IBX data centers and product offerings from those of our competitors.
As our customers evolve their IT strategies, we must remain flexible and evolve along with new technologies and industry and market shifts. Ineffective planning and execution in our cloud and product development strategies may cause difficulty in sustaining competitive advantage in our products and services.
We are also in discussions with a targeted set of hyperscale customers to develop capacity to serve their larger footprint needs by leveraging existing capacity and dedicated hyperscale builds. We have announced our intention to seek a joint venture partner for certain of our hyperscale builds. There can be no assurances that we find such partner or that we are able to successfully meet the needs of these customers.
Some of our competitors may adopt aggressive pricing policies, especially if they are not highly leveraged or have lower return thresholds than we do. As a result, we may suffer from pricing pressure that would adversely affect our ability to generate revenues. Some of these competitors may also provide our target customers with additional benefits, including bundled communication services or cloud services, and may do so in a manner that is more attractive to our potential customers than obtaining space in our IBX data centers. Similarly, with growing acceptance of cloud-based technologies, we are at risk of losing customers that may decide to fully leverage cloud infrastructure offerings instead of managing their own. Competitors could also operate more successfully or form alliances to acquire significant market share.
Failure to compete successfully may materially adversely affect our financial condition, cash flows and results of operations.
Our business could be harmed by prolonged power outages or shortages, increased costs of energy or general lack of availability of electrical resources.
Our IBX data centers are susceptible to regional costs of power, power shortages, planned or unplanned power outages and limitations, especially internationally, on the availability of adequate power resources.
Power outages, including, but not limited to those relating to large storms, earthquakes, fires and tsunamis, could harm our customers and our business. We attempt to limit our exposure to system downtime by using backup generators and power supplies; however, we may not be able to limit our exposure entirely even with these protections in place. Some of our IBX data centers are located in leased buildings where, depending upon the lease requirements and number of tenants involved, we may or may not control some or all of the infrastructure including generators and fuel tanks. As a result, in the event of a power outage, we may be dependent upon the landlord, as well as the utility company, to restore the power.
In addition, global fluctuations in the price of power can increase the cost of energy, and although contractual price increase clauses exist in the majority of our customer agreements, we may not always choose to pass these increased costs on to our customers.

In each of our markets, we rely on third parties to provide a sufficient amount of power for current and future customers. At the same time, power and cooling requirements are growing on a per unit basis. As a result, some customers are consuming an increasing amount of power per cabinet. We generally do not control the amount of power our customers draw from their installed circuits. This means that we could face power limitations in our IBX data centers. This could have a negative impact on the effective available capacity of a given center and limit our ability to grow our business, which could have a negative impact on our financial performance, operating results and cash flows.
We may also have difficulty obtaining sufficient power capacity for potential expansion sites in new or existing markets. We may experience significant delays and substantial increased costs demanded by the utilities to provide the level of electrical service required by our current IBX data center designs.
On January 29, 2019, Pacific Gas and Electric Company (“PG&E”), the public utility that serves the area in which some of our facilities are located, filed for bankruptcy protection in the United States Bankruptcy Court for the Northern District of California, San Francisco (“Bankruptcy Court”). PG&E announced that it filed for bankruptcy to facilitate the resolution of liabilities in connection with the 2017 and 2018 Northern California wildfires. It is possible that, during its bankruptcy, PG&E may seek permission from the Bankruptcy Court to reject, i.e., breach, certain burdensome executory contracts, including high-priced power purchase agreements and other agreements under which PG&E procures electricity for distribution to customers like us. It is not certain that PG&E will be able to obtain such relief. Just before the bankruptcy filing, the Federal Energy Regulatory Commission (“FERC”) ruled that its approval is required before PG&E may reject any FERC-jurisdictional wholesale power agreements. If PG&E seeks and is allowed to reject power agreements, it is difficult to predict the consequences of any such action for us but they could potentially include procuring electricity from more expensive sources, reducing the availability and reliability of electricity supplied to our facilities and relying on a larger percentage of electricity generated by fossil fuels, any of which could reduce supplies of electricity available to our operations or increase our costs of electricity.
The use of high power density equipment may limit our ability to fully utilize our older IBX data centers.
Some customers have increased their use of high power density equipment, such as blade servers, in our IBX data centers which has increased the demand for power on a per cabinet basis. Because many of our IBX data centers were built a number of years ago, the current demand for power may exceed the designed electrical capacity in these centers. As power, not space, is a limiting factor in many of our IBX data centers, our ability to fully utilize those IBX data centers may be impacted. The ability to increase the power capacity of an IBX data center, should we decide to, is dependent on several factors including, but not limited to, the local utility's ability to provide additional power; the length of time required to provide such power; and/or whether it is feasible to upgrade the electrical infrastructure of an IBX data center to deliver additional power to customers. Although we are currently designing and building to a higher power specification than that of many of our older IBX data centers, there is a risk that demand will continue to increase and our IBX data centers could become underutilized sooner than expected.
If our internal controls are found to be ineffective, our financial results or our stock price may be adversely affected.
Our most recent evaluation of our controls resulted in our conclusion that, as of December 31, 2018, in compliance with Section 404 of the Sarbanes-Oxley Act of 2002, our internal controls over financial reporting were effective. Our ability to manage our operations and growth, through, for example, the integration of Metronode, Infomart Dallas, Itconic, and Zenium, the adoption of new accounting principles and tax laws, and our overhaul of our back office systems that, for example, support the customer experience from initial quote to customer billing and our revenue recognition process, will require us to further develop our controls and reporting systems and implement or amend new or existing controls and reporting systems in those areas where the implementation and integration is still ongoing. All of these changes to our financial systems and the implementation and integration of acquisitions create an increased risk of deficiencies in our internal controls over financial reporting. If, in the future, our internal control over financial reporting is found to be ineffective, or if a material weakness is identified in our controls over financial reporting, our financial results may be adversely affected. Investors may also lose confidence in the reliability of our financial statements which could adversely affect our stock price.
Our operating results may fluctuate.
We have experienced fluctuations in our results of operations on a quarterly and annual basis. The fluctuations in our operating results may cause the market price of our common stock to be volatile. We may experience significant fluctuations in our operating results in the foreseeable future due to a variety of factors, including, but not limited to:
fluctuations of foreign currencies in the markets in which we operate;
the timing and magnitude of depreciation and interest expense or other expenses related to the acquisition, purchase or construction of additional IBX data centers or the upgrade of existing IBX data centers;
demand for space, power and solutions at our IBX data centers;

changes in general economic conditions, such as an economic downturn, or specific market conditions in the telecommunications and internet industries, both of which may have an impact on our customer base;
charges to earnings resulting from past acquisitions due to, among other things, impairment of goodwill or intangible assets, reduction in the useful lives of intangible assets acquired, identification of additional assumed contingent liabilities or revised estimates to restructure an acquired company's operations;
the duration of the sales cycle for our offerings and our ability to ramp our newly-hired sales persons to full productivity within the time period we have forecasted;
restructuring charges or reversals of restructuring charges, which may be necessary due to revised sublease assumptions, changes in strategy or otherwise;
acquisitions or dispositions we may make;
the financial condition and credit risk of our customers;
the provision of customer discounts and credits;
the mix of current and proposed products and offerings and the gross margins associated with our products and offerings;
the timing required for new and future IBX data centers to open or become fully utilized;
competition in the markets in which we operate;
conditions related to international operations;
increasing repair and maintenance expenses in connection with aging IBX data centers;
lack of available capacity in our existing IBX data centers to generate new revenue or delays in opening new or acquired IBX data centers that delay our ability to generate new revenue in markets which have otherwise reached capacity;
changes in rent expense as we amend our IBX data center leases in connection with extending their lease terms when their initial lease term expiration dates approach or changes in shared operating costs in connection with our leases, which are commonly referred to as common area maintenance expenses;
the timing and magnitude of other operating expenses, including taxes, expenses related to the expansion of sales, marketing, operations and acquisitions, if any, of complementary businesses and assets;
the cost and availability of adequate public utilities, including power;
changes in employee stock-based compensation;
overall inflation;
increasing interest expense due to any increases in interest rates and/or potential additional debt financings;
changes in our tax planning strategies or failure to realize anticipated benefits from such strategies;
changes in income tax benefit or expense; and
changes in or new GAAP as periodically released by the Financial Accounting Standards Board ("FASB").
Any of the foregoing factors, or other factors discussed elsewhere in this report, could have a material adverse effect on our business, results of operations and financial condition. Although we have experienced growth in revenues in recent quarters, this growth rate is not necessarily indicative of future operating results. Prior to 2008, we had generated net losses every fiscal year since inception. It is possible that we may not be able to generate net income on a quarterly or annual basis in the future. In addition, a relatively large portion of our expenses are fixed in the short-term, particularly with respect to lease and personnel expenses, depreciation and amortization and interest expenses. Therefore, our results of operations are particularly sensitive to fluctuations in revenues. As such, comparisons to prior reporting periods should not be relied upon as indications of our future performance. In addition, our operating results in one or more future quarters may fail to meet the expectations of securities analysts or investors.
Our days sales outstanding ("DSO") may be negatively impacted by process and system upgrades and acquisitions.
Our DSO may be negatively impacted by ongoing process and system upgrades which can impact our customers' experience in the short term, together with integrating recent acquisitions into our processes and systems, which may have a negative impact on our operating cash flows, liquidity and financial performance.
Our reported financial results may be adversely affected by changes in U.S. GAAP.
We prepare our consolidated financial statements in conformity with U.S. GAAP. A change in these principles can have a significant effect on our reported financial position and financial results. In addition, the adoption of new or revised accounting principles may require us to make changes to our systems, processes and controls, which could require us to make costly changes to our operational processes and accounting systems upon or following the adoption of these standards. For example, we adopted the new lease accounting standard on January 1, 2019, which requires lessees to recognize right-of-use assets and right-of-use liabilities related to operating leases. As a result, we will record significant operating lease obligations on our balance sheet and

make other changes in our financial statements, which will have a material effect on our financial statements. We are also implementing a new lease accounting tool, which may impact our accounting and reporting process. This, and other future changes to accounting rules, could have a material adverse effect on the reporting of our business, financial condition and results of operationsoperations. For additional information regarding the accounting standard updates, see "Accounting Standards Not Yet Adopted" and "Accounting Standards Adopted" sections of Note 1 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.
We may incur goodwill and other intangible asset impairment charges, or impairment charges to our property, plant and equipment, which could result in a significant reduction to our earnings.
In accordance with U.S. GAAP, we are required to assess our goodwill and other intangible assets annually, or more frequently whenever events or changes in circumstances indicate potential impairment, such as changing market conditions or any changes in key assumptions. If the testing performed indicates that an asset may not be adversely affected following consummationrecoverable, we are required to record a non-cash impairment charge for the difference between the carrying value of the Verizon Asset Purchasegoodwill or other intangible assets and the implied fair value of the goodwill or other intangible assets in the period the determination is made.
We also periodically monitor the remaining net book values of our property, plant and equipment, including at the individual IBX data center level. Although each individual IBX data center is currently performing in accordance with our expectations, the possibility that one or more IBX data centers could begin to under-perform relative to our expectations is possible and may also result in non-cash impairment charges.
These charges could be significant, which could have a material adverse effect on our business, results of operations or financial condition.
We have incurred substantial losses in the past and may incur additional losses in the future.
As of December 31, 2018, our retained earnings were $889.9 million. Although we have generated net income for each fiscal year since 2008, except for the year ended December 31, 2014, we are currently investing heavily in our future growth through the build out of multiple additional IBX data centers, expansions of IBX data centers and acquisitions of complementary businesses. As a result, we will incur higher depreciation and other operating expenses, as well as acquisition costs and interest expense, that may negatively impact our ability to sustain profitability in future periods unless and until these new IBX data centers generate enough revenue to exceed their operating costs and cover the additional overhead needed to scale our business for this anticipated growth. The current global financial uncertainty may also impact our ability to sustain profitability if we are not ablecannot generate sufficient revenue to obtain requisite consentsoffset the increased costs of our recently-opened IBX data centers or enter into certain agreements.
PursuantIBX data centers currently under construction. In addition, costs associated with the acquisition and integration of any acquired companies, as well as the additional interest expense associated with debt financing we have undertaken to fund our growth initiatives, may also negatively impact our ability to sustain profitability. Finally, given the transaction agreement, Verizon has agreed to use its commercially reasonable efforts until 12 months following the consummationcompetitive and evolving nature of the Verizon Asset Purchase to obtain any consents from customers, landlords, and other third parties that may be necessaryindustry in connection with the Verizon Asset Purchase, or to amend its agreements with such third parties so thatwhich we will be entitled to the rights and benefits currently enjoyed by Verizon under such agreements on substantially the same terms as then in effect. To the extent that we or Verizon are not able to obtain such consents,operate, we may not be able to realizesustain or increase profitability on a quarterly or annual basis.
The failure to obtain favorable terms when we renew our IBX data center leases, or the anticipated benefitsfailure to renew such leases, could harm our business and results of operations.
While we own certain of our IBX data centers, others are leased under long-term arrangements with lease terms expiring at various dates through 2065. These leased centers have all been subject to significant development by us in order to convert them from, in most cases, vacant buildings or warehouses into IBX data centers. Most of our IBX data center leases have renewal options available to us. However, many of these renewal options provide for the rent to be set at then-prevailing market rates. To the extent that then-prevailing market rates or negotiated rates are higher than present rates, these higher costs may adversely impact our business and results of operations, or we may decide against renewing the lease. In the event that an IBX data center lease does not have a renewal option, or we fail to exercise a renewal option in a timely fashion and lose our right to renew the lease, we may not be successful in negotiating a renewal of the Verizon Asset Purchase.lease with the landlord. A failure to renew a lease could force us to exit a building prematurely, which could disrupt our business, harm our customer relationships, expose us to liability under our customer contracts, cause us to take impairment charges and affect our operating results negatively.
We would incur adverse tax consequencesdepend on a number of third parties to provide internet connectivity to our IBX data centers; if the Verizon Asset Purchase causes usconnectivity is interrupted or terminated, our operating results and cash flow could be materially and adversely affected.
The presence of diverse telecommunications carriers' fiber networks in our IBX data centers is critical to failour ability to qualifyretain and attract new customers. We are not a telecommunications carrier, and as a REIT for U.S. federal income tax purposes.
such, we rely on third parties to provide our customers with carrier services. We believe that following the Verizon Asset Purchase, weavailability of carrier capacity will integrate Verizon’s assetsdirectly affect our ability to achieve our projected results. We rely primarily on revenue opportunities from the telecommunications carriers' customers to encourage them to invest the capital and operations inoperating resources required to connect from their centers to our IBX data centers. Carriers will likely evaluate the

revenue opportunity of an IBX data center based on the assumption that the environment will be highly competitive. We cannot provide assurance that each and every carrier will elect to offer its services within our IBX data centers or that once a mannercarrier has decided to provide internet connectivity to our IBX data centers that it will allow us to timely satisfy the REIT income, asset, and distribution tests applicable to us. However, if we failcontinue to do so for any period of time.
Our new IBX data centers require construction and operation of a sophisticated redundant fiber network. The construction required to connect multiple carrier facilities to our IBX data centers is complex and involves factors outside of our control, including regulatory processes and the availability of construction resources. Any hardware or fiber failures on this network may result in significant loss of connectivity to our new IBX data center expansions. This could affect our ability to attract new customers to these IBX data centers or retain existing customers.
If the establishment of highly diverse internet connectivity to our IBX data centers does not occur, is materially delayed or is discontinued, or is subject to failure, our operating results and cash flow will be adversely affected.
We have government customers, which subjects us to risks including early termination, audits, investigations, sanctions and penalties.
We derive revenues from contracts with the U.S. government, state and local governments and foreign governments. Some of these customers may terminate all or part of their contracts at any time, without cause. There is increased pressure for governments and their agencies, both domestically and internationally, to reduce spending. Some of our federal government contracts are subject to the approval of appropriations being made by the U.S. Congress to fund the expenditures under these contracts. Similarly, some of our contracts at the state and local levels are subject to government funding authorizations.
Additionally, government contracts often have unique terms and conditions, such as most favored customer obligations, and are generally subject to audits and investigations which could result in various civil and criminal penalties and administrative sanctions, including termination of contracts, refund of a portion of fees received, forfeiture of profits, suspension of payments, fines and suspensions or debarment from future government business.
Because we depend on the development and growth of a balanced customer base, including key magnet customers, failure to attract, grow and retain this base of customers could jeopardizeharm our business and operating results.
Our ability to maximize revenues depends on our ability to develop and grow a balanced customer base, consisting of a variety of companies, including enterprises, cloud, digital content and financial companies, and network service providers. We consider certain of these customers to be key magnets in that they draw in other customers. The more balanced the customer base within each IBX data center, the better we will be able to generate significant interconnection revenues, which in turn increases our overall revenues. Our ability to attract customers to our IBX data centers will depend on a variety of factors, including the presence of multiple carriers, the mix of our offerings, the overall mix of customers, the presence of key customers attracting business through vertical market ecosystems, the IBX data center's operating reliability and security and our ability to effectively market our offerings. However, some of our customers may face competitive pressures and may ultimately not be successful or losemay be consolidated through merger or acquisition. If these customers do not continue to use our qualificationIBX data centers it may be disruptive to our business. Finally, the uncertain global economic climate may harm our ability to attract and retain customers if customers slow spending, or delay decision-making on our offerings, or if customers begin to have difficulty paying us and we experience increased churn in our customer base. Any of these factors may hinder the development, growth and retention of a balanced customer base and adversely affect our business, financial condition and results of operations.
We may be subject to securities class action and other litigation, which may harm our business and results of operations.
We may be subject to securities class action or other litigation. For example, securities class action litigation has often been brought against a company following periods of volatility in the market price of its securities. Litigation can be lengthy, expensive, and divert management's attention and resources. Results cannot be predicted with certainty and an adverse outcome in litigation could result in monetary damages or injunctive relief. Further, any payments made in settlement may directly reduce our revenue under U.S. GAAP and could negatively impact our operating results for taxationthe period.  For all of these reasons, litigation could seriously harm our business, results of operations, financial condition or cash flows.
We may not be able to protect our intellectual property rights.
We cannot make assurances that the steps taken by us to protect our intellectual property rights will be adequate to deter misappropriation of proprietary information or that we will be able to detect unauthorized use and take appropriate steps to enforce our intellectual property rights. We also are subject to the risk of litigation alleging infringement of third-party intellectual property rights. Any such claims could require us to spend significant sums in litigation, pay damages, develop non-infringing intellectual property or acquire licenses to the intellectual property that is the subject of the alleged infringement.

Government regulation may adversely affect our business.
Various laws and governmental regulations, both in the U.S. and abroad, governing internet-related services, related communications services and information technologies remain largely unsettled, even in areas where there has been some legislative action. For example, the Federal Communications Commission ("FCC") recently overturned network neutrality rules, which may result in material changes in the regulations and contribution regime affecting us and our customers. Furthermore, the U.S. Congress and state legislatures are reviewing and considering changes to the new FCC rules making the future of network neutrality and its impact on Equinix uncertain. There may also be forthcoming regulation in the U.S. in the areas of cybersecurity, data privacy and data security, any of which could impact Equinix and our customers. Similarly, data privacy regulations outside of the U.S. continue to evolve and must be addressed by Equinix as a REIT, particularly if we were ineligibleglobal company.
We remain focused on whether and how existing and changing laws, such as those governing intellectual property, privacy, libel, telecommunications services, data flows/data localization, carbon emissions impact, and taxation apply to utilize relief provisions set forththe internet and to related offerings such as ours; and substantial resources may be required to comply with regulations or bring any non-compliant business practices into compliance with such regulations. In addition, the continuing development of the market for online commerce and the displacement of traditional telephony service by the internet and related communications services may prompt an increased call for more stringent consumer protection laws or other regulation both in the Internal Revenue Code (the "Code").U.S. and abroad that may impose additional burdens on companies conducting business online and their service providers.
The adoption, or modification of laws or regulations relating to the internet and our business, or interpretations of existing laws, could have a material adverse effect on our business, financial condition and results of operations.
Industry consolidation may have a negative impact on our business model.
If customers combine businesses, they may require less colocation space, which could lead to churn in our customer base. Regional competitors may also consolidate to become a global competitor. Consolidation of our customers and/or our competitors may present a risk to our business model and have a negative impact on our revenues.
We have various mechanisms in place that may discourage takeover attempts.
Certain provisions of our certificate of incorporation and bylaws may discourage, delay or prevent a third party from acquiring control of us in a merger, acquisition or similar transaction that a stockholder may consider favorable. Such provisions include:
ownership limitations and transfer restrictions relating to our stock that are intended to facilitate our compliance with certain REIT rules relating to share ownership;
authorization for the issuance of "blank check" preferred stock;
the prohibition of cumulative voting in the election of directors;
limits on the persons who may call special meetings of stockholders;
limits on stockholder action by written consent; and
advance notice requirements for nominations to the Board of Directors or for proposing matters that can be acted on by stockholders at stockholder meetings.
In addition, Section 203 of the Delaware General Corporation Law, which restricts certain business combinations with interested stockholders in certain situations, may also discourage, delay or prevent someone from acquiring or merging with us.
Risks Related to Our Taxation as a REIT
We may not remain qualified for taxation as a REIT.
We have elected to be taxed as a REIT for U.S. federal income tax purposes beginning with our 2015 taxable year. We believe that our organization and method of operation comply with the rules and regulations promulgated under the Internal Revenue Code of 1986, as amended (the "Code"), such that we will

continue to qualify for taxation as a REIT. However, we cannot assure you that we have qualified for taxation as a REIT or that we will remain so qualified. Qualification for taxation as a REIT involves the application of highly technical and complex provisions of the Code to our operations as well as various factual determinations concerning matters and circumstances not entirely within our control. There are also limited judicial or administrative interpretations of applicable REIT provisions.provisions of the Code.
If, in any taxable year, we fail to remain qualified for taxation as a REIT and are not entitled to relief under the Code:
we will not be allowed a deduction for distributions to stockholders in computing our taxable income;

we will be subject to federal and state income tax including any applicable alternative minimum tax, on our taxable income at regular corporate income tax rates; and
we would not be eligible to elect REIT status again until the fifth taxable year that begins after the first year for which we failed to qualify for taxation as a REIT.
Any such corporate tax liability could be substantial and would reduce the amount of cash available for other purposes. If we fail to remain qualified for taxation as a REIT, we may need to borrow additional funds or liquidate some investments to pay any additional tax liability. Accordingly, funds available for investment and distributions to stockholders could be reduced.
As a REIT, failure to make required distributions would subject us to federal corporate income tax.
We paid quarterly distributions in 2016.2018 and have declared a quarterly distribution to be paid on March 20, 2019. The amount, timing and form of any future distributions will be determined, and will be subject to adjustment, by our Board of Directors. To remain qualified for taxation as a REIT, we are generally required to distribute at least 90% of our REIT taxable income (determined without regard to the dividends paid deduction and excluding net capital gain) each year, or in limited circumstance,circumstances, the following year, to our stockholders. Generally, we expect to distribute all or substantially all of our REIT taxable income. If our cash available for distribution falls short of our estimates, we may be unable to maintain distributions that approximate our REIT taxable income and may fail to remain qualified for taxation as a REIT. In addition, our cash flows from operations may be insufficient to fund required distributions as a result of differences in timing between the actual receipt of income and the payment of expenses and the recognition of income and expenses for federal income tax purposes, or the effect of nondeductible expenditures, such as capital expenditures, payments of compensation for which Section 162(m) of the Code denies a deduction, interest expense deductions limited by Section 163(j) of the Code, the creation of reserves or required debt service or amortization payments.
To the extent that we satisfy the 90% distribution requirement but distribute less than 100% of our REIT taxable income, we will be subject to federal corporate income tax on our undistributed taxable income. In addition, we will be subject to a 4% nondeductible excise tax on our undistributed taxable income if the actual amount that we distribute to our stockholders for a calendar year is less than the minimum amount specified under the Code.
We may be required to borrow funds, sell assets or raise equity to satisfy our REIT distribution requirements.
Due to the size and timing of future distributions, including any distributions made to satisfy REIT distribution requirements, we may need to borrow funds, sell assets or raise equity, even if the then-prevailing market conditions are not favorable for these borrowings, sales or offerings.
Any insufficiency of our cash flows to cover our REIT distribution requirements could adversely impact our ability to raise short- and long-term debt, to sell assets, or to offer equity securities in order to fund distributions required to maintain our qualification and taxation as a REIT. Furthermore, the REIT distribution requirements may increase the financing we need to fund capital expenditures, future growth and expansion initiatives. This would increase our indebtedness. A significant increase in our outstanding debt could lead to a downgrade of our credit rating. A downgrade of our credit rating could negatively impact our ability to access credit markets. Further, certain of our current debt instruments limit the amount of indebtedness we and our subsidiaries may incur. Significantly more financing, therefore, may be unavailable, more expensive or restricted by the terms of our outstanding indebtedness. For a discussion of risks related to our substantial level of indebtedness, see “Other Risks”.other risks described elsewhere in this Form 10-K.
Whether we issue equity, at what price and the amount and other terms of any such issuances will depend on many factors, including alternative sources of capital, our then-existing leverage, our need for additional capital, market conditions and other factors beyond our control. If we raise additional funds through the issuance of equity securities or debt convertible into equity securities, the percentage of stock ownership by our existing stockholders may be reduced. In addition, new equity securities or convertible debt securities could have rights, preferences and privileges senior to those of our current stockholders, which could substantially decrease the value of our securities owned by them. Depending on the share price we are able to obtain, we may have to sell a significant number of shares in order to raise the capital we deem necessary to execute our long-term strategy, and our stockholders may experience dilution in the value of their shares as a result.
Legislative or other actions affecting REITs could have a negative effect on us or our stockholders.
At any time, the federal income tax laws governing REITs or the administrative interpretations of those laws may be amended. Federal and state tax laws are constantly under review by persons involved in the legislative process, the IRS, the U.S. Department

of the Treasury and state taxing authorities. Changes to the tax laws, regulations and administrative interpretations, which may have retroactive application, could adversely affect us. In addition, some of these changes could have a more significant impact on us as compared to other REITs due to the nature of our business and our substantial use of taxable REIT subsidiaries (“TRSs”). We cannot predict with certainty whether, when, in what forms, or with what effective dates, the tax laws, regulations and administrative interpretations applicable to us may be changed.
Complying with REIT requirements may limit our flexibility or cause us to foregoforgo otherwise attractive opportunities.
To remain qualified for taxation as a REIT for U.S. federal income tax purposes, we must satisfy tests concerning, among other things, the sources of our income, the nature and diversification of our assets and the amounts we distribute to our stockholders. For example, under the Code, no more than 25% (20% from and after our 2018 taxable year)20% of the value of the assets of a REIT may be represented by securities of one or more TRSs. Similar rules apply to other nonqualifying assets. These limitations may affect our ability to make large investments in other non-REIT qualifying operations or assets. In addition, in order to maintain our qualification for taxation as a REIT, we must distribute at least 90% of our REIT taxable income, determined without regard to the dividends paid deduction and excluding any net capital gains. Even if we maintain our qualification for taxation as a REIT, we will be subject to U.S. federal income tax

at regular corporate income tax rates for our undistributed REIT taxable income, as well as U.S. federal income tax at regular corporate income tax rates for income recognized by our TRSs.TRSs; we also pay taxes in the foreign jurisdictions in which our international assets and operations are held and conducted regardless of our REIT status. Because of these distribution requirements, we will likely not be able to fund future capital needs and investments from operating cash flow. As such, compliance with REIT tests may hinder our ability to make certain attractive investments, including the purchase of significant nonqualifying assets and the material expansion of non-real estate activities.
Our ability to fully deduct our interest expense may be limited, or we may be required to adjust the tax depreciation of our real property in order to maintain the full deductibility of our interest expense.
The Code limits interest deductions for businesses, whether in corporate or passthrough form, to the sum of the taxpayer's business interest income for the tax year and 30% of the taxpayer's adjusted taxable income for that tax year. This limitation does not apply to an "electing real property trade or business". Although REITs are permitted to make such an election, we do not currently intend to do so. If we so elect in the future, depreciable real property that we hold (including specified improvements) would be required to be depreciated for U.S. federal income tax purposes under the alternative depreciation system of the Code, which generally imposes a class life for depreciable real property as long as forty years.
As a REIT, we are limited in our ability to fund distribution payments using cash generated through our TRSs.
Our ability to receive distributions from our TRSs is limited by the rules with which we must comply to maintain our qualification for taxation as a REIT. In particular, at least 75% of our gross income for each taxable year as a REIT must be derived from real estate. Consequently, no more than 25% of our gross income may consist of dividend income from our TRSs and other nonqualifying types of income. Thus, our ability to receive distributions from our TRSs may be limited and may impact our ability to fund distributions to our stockholders using cash flows from our TRSs. Specifically, if our TRSs become highly profitable, we might become limited in our ability to receive net income from our TRSs in an amount required to fund distributions to our stockholders commensurate with that profitability.
In addition, a significant amount of our income and cash flows from our TRSs is generated from our international operations. In many cases, there are local withholding taxes and currency controls that may impact our ability or willingness to repatriate funds to the United States to help satisfy REIT distribution requirements.
Our extensive use of TRSs, including for certain of our international operations, may cause us to fail to remain qualified for taxation as a REIT.
Our operations include an extensive use of TRSs. The net income of our TRSs is not required to be distributed to us, and income that is not distributed to us generally is not subject to the REIT income distribution requirement. However, there may be limitations on our ability to accumulate earnings in our TRSs and the accumulation or reinvestment of significant earnings in our TRSs could result in adverse tax treatment. In particular, if the accumulation of cash in our TRSs causes the fair market value of our securities in our TRSs and other nonqualifying assets to exceed 25% of the fair market value of our assets, then we will fail to remain qualified for taxation as a REIT. Beginning with our 2018 taxable year, if the accumulation of cash in our TRSs causes (1) the fair market value of our securities in our TRSs to exceed 20% of the fair market value of our assets or (2) the fair market value of our securities in our TRSs and other nonqualifying assets to exceed 25% of the fair market value of our assets, then we will fail to remain qualified for taxation as a REIT. Further, a substantial portion of our TRSs are overseas, and a material change in foreign currency rates could also negatively impact our ability to remain qualified for taxation as a REIT.
The Code imposes limitations on the ability of our TRSs to utilize specified income tax deductions, including limits on the use of net operating losses and limits on the deductibility of interest expense.
Our cash distributions are not guaranteed and may fluctuate.
A REIT generally is required to distribute at least 90% of its REIT taxable income to its stockholders.
Our Board of Directors, in its sole discretion, will determine on a quarterly basis the amount of cash to be distributed to our stockholders based on a number of factors including, but not limited to, our results of operations, cash flow and capital requirements, economic conditions, tax considerations, borrowing capacity and other factors, including debt covenant restrictions that may impose limitations on cash payments, future acquisitions and divestitures and any stock repurchase program. Consequently, our distribution levels may fluctuate.

Even if we remain qualified for taxation as a REIT, some of our business activities are subject to corporate level income tax and foreign taxes, which will continue to reduce our cash flows, and we will have potential deferred and contingent tax liabilities.
Even if we remain qualified for taxation as a REIT, we may be subject to some federal, state, local and foreign taxes on our income and assets, including alternative minimum taxes, taxes on any undistributed income, and state, local or foreign income, franchise, property and transfer taxes.

In addition, we could in certain circumstances be required to pay an excise or penalty tax, which could be significant in amount, in order to utilize one or more relief provisions under the Code to maintain our qualification for taxation as a REIT.
A portion of our business is conducted through wholly ownedwholly-owned TRSs because certain of our business activities could generate nonqualifying REIT income as currently structured and operated. The income of our U.S. TRSs will continue to be subject to federal and state corporate income taxes. In addition, our international assets and operations will continue to be subject to taxation in the foreign jurisdictions where those assets are held or those operations are conducted. Any of these taxes would decrease our earnings and our available cash.
We will also be subject to a federal corporate level income tax at the highest regular corporate income tax rate (currently 35%21%) on gain recognized from a sale of a REIT asset where our basis in the asset is determined by reference to the basis of the asset in the hands of a C corporation (such as (i) an asset that we held as of the effective date of our REIT election, that is, January 1, 2015, or (ii) an asset that we or a QRSour qualified REIT subsidiaries ("QRSs") hold following the liquidation or other conversion of a former TRS). This 35%21% tax is generally applicable to any disposition of such an asset during the five-year period after the date we first owned the asset as a REIT asset (e.g., January 1, 2015 in the case of REIT assets we held at the time of our REIT conversion), to the extent of the built-in-gain based on the fair market value of such asset on the date we first held the asset as a REIT asset.
In addition, the IRS and any state or local tax authority may successfully assert liabilities against us for corporate income taxes for our pre-REIT period, in which case we will owe these taxes plus applicable interest and penalties, if any. Moreover, any increase in taxable income for these pre-REIT periods will likely result in an increase in pre-REIT accumulated earnings and profits, which could cause us to pay an additional taxable distribution to our stockholders and an interest penalty to the IRS after the relevant determination.
Restrictive loan covenants could prevent us from satisfying REIT distribution requirements.
Restrictions in our credit facility and our indentures may prevent us from satisfying our REIT distribution requirements, and we could fail to remain qualified for taxation as a REIT. If these limits do not jeopardize our qualification for taxation as a REIT but nevertheless prevent us from distributing 100% of our REIT taxable income, we would be subject to federal corporate income tax, and potentially a nondeductible excise tax, on the retained amounts. See “Other Risks” for further information on our restrictive loan covenants.
Complying with REIT requirements may limit our ability to hedge effectively and increase the cost of our hedging and may cause us to incur tax liabilities.
The REIT provisions of the Code limit our ability to hedge assets, liabilities, revenues and expenses. Generally, income from hedging transactions that we enter into to manage risk of interest rate changes or fluctuations with respect to borrowings made or to be made by us to acquire or carry real estate assets and income from certain currency hedging transactions related to our non-U.S. operations, as well as income from qualifying counteracting hedges, do not constitute “gross income”"gross income" for purposes of the REIT gross income tests. To the extent that we enter into other types of hedging transactions, the income from those transactions is likely to be treated as nonqualifying income for purposes of the REIT gross income tests. As a result of these rules, we may need to limit our use of advantageous hedging techniques or implement those hedges through our TRSs, which we presently do. This increases the cost of our hedging activities because our TRSs are subject to tax on income or gains resulting from hedges entered into by them and may expose us to greater risks associated with changes in interest rates or exchange rates than we would otherwise want to bear. In addition, hedging losses in any of our TRSs may not provide any tax benefit, except for being carried forward for possible use against future capitalincome or gain in the TRSs.
Distributions payable by REITs generally do not qualify for preferential tax rates.
Qualifying distributionsDividends payable by U.S. corporations to noncorporate stockholders, such as individuals, trusts and estates, that are U.S. stockholders are currentlygenerally eligible for reduced U.S. federal income tax at preferential tax rates. Distributions payable by REITs, in contrast, generally are not eligible for the preferential tax rates. The preferential tax rates applicable to "qualified dividends." Distributions paid by REITs generally are not treated as "qualified dividends" under the Code, and the reduced rates applicable to such dividends do not generally apply. However, for tax years beginning after 2017 and before 2026, REIT dividends paid to noncorporate stockholders are generally taxed at an effective tax rate lower than applicable ordinary income tax rates due to the availability of a deduction under the Code for specified forms of income from passthrough entities. More favorable rates will nevertheless continue to apply to regular corporate distributions could"qualified" dividends, which may cause some investors that are individuals, trusts and estates to perceive investmentsthat an investment in REITs to be relativelya REIT is less attractive than investmentsan investment in a non-REIT entity that pays dividends, thereby reducing the stockdemand and market price of non-REIT corporations that pay distributions, which could adversely affect the value of the stock of REITs, including our common stock.

Our certificate of incorporation contains restrictions on the ownership and transfer of our stock, though they may not be successful in preserving our qualification for taxation as a REIT.
In order for us to remain qualified for taxation as a REIT, no more than 50% of the value of outstanding shares of our stock may be owned, beneficially or constructively, by five or fewer individuals at any time during the last half of each taxable year other than the first year for which we electelected to be taxed as a REIT. In addition, rents from “affiliated tenants”"affiliated tenants" will not qualify as qualifying REIT income if we own 10% or more by vote or value of the customer, whether directly or after application of attribution rules under the Code. Subject to certain exceptions, our certificate of incorporation prohibits any stockholder from owning, beneficially or constructively, more than (i) 9.8% in value of the outstanding shares of all classes or series of our capital stock or (ii) 9.8% in value or number, whichever is more restrictive, of the outstanding shares of any class or series of our capital stock. We refer to these restrictions collectively as the “ownership limits”"ownership limits" and we included them in our certificate of incorporation to facilitate our compliance with REIT tax rules. The constructive ownership rules under the Code are complex and may cause the outstanding stock owned by a group of related individuals or entities to be deemed to be constructively owned by one individual or entity. As a result, the acquisition of less than 9.8% of our outstanding common stock (or the outstanding shares of any class or series of our stock) by an individual or entity could cause that individual or entity or another individual or entity to own constructively in excess of the relevant ownership limits. Any attempt to own or transfer shares of our common stock or of any of our other capital stock in violation of these restrictions may result in the shares being automatically transferred to a charitable trust or may be void. Even though our certificate of incorporation contains the ownership limits, there can be no assurance that these

provisions will be effective to prevent our qualification for taxation as a REIT from being jeopardized, including under the affiliated tenant rule. Furthermore, there can be no assurance that we will be able to monitor and enforce the ownership limits. If the restrictions in our certificate of incorporation are not effective and, as a result, we fail to satisfy the REIT tax rules described above, then absent an applicable relief provision, we will fail to remain qualified for taxation as a REIT.
Other Risks
Acquisitions present many risks,In addition, the ownership and we may not realize the financialtransfer restrictions could delay, defer or strategic goalsprevent a transaction or a change in control that were contemplated at the time of any transaction.
Over the last several years, we have completed numerous acquisitions. We may make additional acquisitionsmight involve a premium price for our stock or otherwise be in the future, which may include (i) acquisitions of businesses, products, services or technologies that we believe to be complementary, (ii) acquisitions of new IBX data centers or real estate for development of new IBX data centers or (iii) acquisitions through investments in local data center operators. We may pay for future acquisitions by using our existing cash resources (which may limit other potential usesbest interest of our cash), incurring additional debt (whichstockholders. As a result, the overall effect of the ownership and transfer restrictions may increasebe to render more difficult or discourage any attempt to acquire us, even if such acquisition may be favorable to the interests of our interest expense, leverage and debt service requirements) and/stockholders.
Legislative or issuing shares (which may dilute our existing stockholders andother actions affecting REITs could have a negative effect on us or our earnings per share). Acquisitions expose us to potential risks, including:stockholders.
At any time, the possible disruption of our ongoing business and diversion of management’s attention by acquisition, transition and integration activities, particularly when multiple acquisitions and integrations are occurring at the same time;
our potential inability to successfully pursuefederal or realize some or all of the anticipated revenue opportunities associated with an acquisition or investment;
the possibility that we may not be able to successfully integrate acquired businesses, or businesses in which we invest, or achieve anticipated operating efficiencies or cost savings;
the possibility that announced acquisitions may not be completed, due to failure to satisfy the conditions to closing or for other reasons;
the dilution of our existing stockholders as a result of our issuing stock in transactions, such as in connection with our acquisitions of Switch & Data Facilities Company, Inc. in 2010 and TelecityGroup in 2016;
the possibility of customer dissatisfaction if we are unable to achieve levels of quality and stability on par with past practices;
the potential deterioration to our ability to access credit markets due to increased leverage;
the possibility that our customers may not accept either the existing equipment infrastructurestate income tax laws governing REITs, or the “look-and-feel”administrative interpretations of a new or different IBX data center;
the possibility that additional capital expendituresthose laws, may be required or that transaction expenses associated with acquisitions may be higher than anticipated;
the possibility that required financing to fund an acquisition may not be available on acceptable terms or at all;
the possibility that we may be unable to obtain required approvals from governmental authoritiesamended. Federal and state tax laws are constantly under antitrust and competition laws on a timely basis or at all, which could, among other things, delay or prevent us from completing an acquisition, limit our ability to realize the expected financial or strategic benefits of an acquisition or have other adverse effects on our current business and operations;
the possible loss or reduction in value of acquired businesses;

the possibility that future acquisitions may present new complexities in deal structure, related complex accounting and coordination with new partners, particularly in light of our desire to maintain our taxation as a REIT;
the possibility that future acquisitions may be in geographies and regulatory environments to which we are unaccustomed;
the possibility that carriers may find it cost-prohibitive or impractical to bring fiber and networks into a new IBX data center;
the possibility of litigation or other claims in connection with, or as a result of, an acquisition, including claims from terminated employees, customers, former stockholders or other third parties;
the possibility that asset divestments may be required in order to obtain regulatory clearance for a transaction; and
the possibility of pre-existing undisclosed liabilities, including, but not limited to, lease or landlord related liability, environmental liability or asbestos liability, for which insurance coverage may be insufficient or unavailable, or other issues not discoveredreview by persons involved in the diligence process.
The occurrence of any of these risks could have a material adverse effect on our business, results of operations, financial condition or cash flows.
We cannot assure that the price of any future acquisitions of IBX data centers will be similar to prior IBX data center acquisitions. In fact, we expect costs required to build or render new IBX data centers operational to increase in the future. If our revenue does not keep pace with these potential acquisition and expansion costs, we may not be able to maintain our current or expected margins as we absorb these additional expenses. There is no assurance we would successfully overcome these risks or any other problems encountered with these acquisitions.
Our substantial debt could adversely affect our cash flows and limit our flexibility to raise additional capital.
We have a significant amount of debt and may need to incur additional debt to support our growth. Additional debt may also be incurred to fund future acquisitions, any future special distributions, regular distributions or the other cash outlays associated with maintaining qualification for taxation as a REIT. As of December 31, 2016, our total indebtedness was approximately $6.8 billion, our stockholders’ equity was $4.4 billion and our cash, cash equivalents, and investments totaled $761.9 million. In addition, as of December 31, 2016, we had approximately $1.4 billion of additional liquidity available to us from our $1.5 billion revolving credit facility. Some of our debt contains covenants which may limit our operating flexibility. In addition to our substantial debt, we lease a majority of our IBX data centers and certain equipment under non-cancellable lease agreements, some of which are accounted for as operating leases. As of December 31, 2016, our total minimum operating lease commitments under those lease agreements, excluding potential lease renewals, was approximately $1.6 billion, which represents off-balance sheet commitments.
Our substantial amount of debt and related covenants, and our off-balance sheet commitments, could have important consequences. For example, they could:
require us to dedicate a substantial portion of our cash flow from operations to make interest and principal payments on our debt and in respect of other off-balance sheet arrangements, reducing the availability of our cash flow to fund future capital expenditures, working capital, execution of our expansion strategy and other general corporate requirements;
increase the likelihood of negative outlook from our rating agencies;
make it more difficult for us to satisfy our obligations under our various debt instruments;
increase our cost of borrowing and even limit our ability to access additional debt to fund future growth;
increase our vulnerability to general adverse economic and industry conditions and adverse changes in governmental regulations;
limit our flexibility in planning for, or reacting to, changes in our business and industry, which may place us at a competitive disadvantage compared with our competitors;
limit our operating flexibility through covenants with which we must comply, such as limiting our ability to repurchase shares of our common stock;
limit our ability to borrow additional funds, even when necessary to maintain adequate liquidity, which would also limit our ability to further expand our business; and
make us more vulnerable to increases in interest rates because of the variable interest rates on some of our borrowings to the extent we have not entirely hedged such variable rate debt.
The occurrence of any of the foregoing factors could have a material adverse effect on our business, results of operations and financial condition.
We may also need to refinance a portion of our outstanding debt as it matures. There is a risk that we may not be able to refinance existing debt or that the terms of any refinancing may not be as favorable as the terms of our existing debt. Furthermore, if prevailing interest rates or other factors at the time of refinancing result in higher interest rates upon refinancing, then the interest

expense relating to that refinanced indebtedness would increase. These risks could materially adversely affect our financial condition, cash flows and results of operations.
Adverse global economic conditions and credit market uncertainty could adversely impact our business and financial condition.
Adverse global economic conditions and uncertain conditions in the credit markets have created, and in the future may create, uncertainty and unpredictability and add risk to our future outlook. An uncertain global economy could also result in churn in our customer base, reductions in revenues from our offerings, longer sales cycles, slower adoption of new technologies and increased price competition, adversely affecting our liquidity. The uncertain economic environment could also have an impact on our foreign exchange forward contracts if our counterparties’ credit deteriorates or they are otherwise unable to perform their obligations. Finally, our ability to access the capital markets may be severely restricted at a time when we would like, or need, to do so which could have an impact on our flexibility to pursue additional expansion opportunities and maintain our desired level of revenue growth in the future.
Recent political developments related to the U.K.’s referendum on membership in the EU could have a material adverse effect on our business.
We currently have IBX data centers and employees located in the UK and other European jurisdictions.  A referendum was held on June 23, 2016 in the UK to determine whether it should remain in or leave the European Union (the “EU”), the outcome of which was a vote in favor of leaving the EU (the “Brexit”). The Brexit has resulted in political and economic instability throughout Europe. There is considerable uncertainty surrounding the exitlegislative process, the extent of the UK’s future relationship with the EU, and the longer term impact of the Brexit on economic conditions in the UK and in the EU.   The ongoing instability and uncertainty surrounding the Brexit in the near term, and the final terms reached regarding the Brexit, could have an adverse impact on our business and employees in EMEA and could adversely affect our financial condition and results of operations.
If we cannot effectively manage our international operations, and successfully implement our international expansion plans, our revenues may not increase and our business and results of operations would be harmed.
For the years ended December 31, 2016, 2015 and 2014, we recognized approximately 57%, 49% and 49%, respectively, of our revenues outside the U.S. We currently operate outside of the U.S. in Canada, Brazil, EMEA and Asia-Pacific.
To date, the network neutrality of our IBX data centers and the variety of networks available to our customers has often been a competitive advantage for us. In certain of our acquired IBX data centers in the Asia-Pacific region the limited number of carriers available reduces that advantage. As a result, we may need to adapt our key revenue-generating offerings and pricing to be competitive in those markets. In addition, we are currently undergoing expansions or evaluating expansion opportunities outside of the U.S. Undertaking and managing expansions in foreign jurisdictions may present unanticipated challenges to us.
Our international operations are generally subject to a number of additional risks, including:
the costs of customizing IBX data centers for foreign countries;
protectionist laws and business practices favoring local competition;
greater difficulty or delay in accounts receivable collection;
difficulties in staffing and managing foreign operations, including negotiating with foreign labor unions or workers’ councils;
difficulties in managing across cultures and in foreign languages;
political and economic instability;
fluctuations in currency exchange rates;
difficulties in repatriating funds from certain countries;
our ability to obtain, transfer, or maintain licenses required by governmental entities with respect to our business;
unexpected changes in regulatory, tax and political environments;
our ability to secure and maintain the necessary physical and telecommunications infrastructure;
compliance with anti-bribery and corruption laws;
compliance with economic and trade sanctions enforced by the Office of Foreign Assets Control ofInternal Revenue Service, the U.S. Department of Treasury;the Treasury and
compliance with evolving governmental regulation with state taxing authorities. Changes to the tax laws, regulations and administrative interpretations, which wemay have little experience.
retroactive application, could adversely affect us. In addition, compliance with international and U.S. laws and regulations that apply to our international operations increases our cost of doing business in foreign jurisdictions. These laws and regulations include data privacy requirements, labor relations laws, tax laws, anti-competition regulations, import and trade restrictions, export requirements, economic and trade sanctions, U.S. laws such as the Foreign Corrupt Practices Act and local laws which also prohibit corrupt payments to governmental officials.

Violationssome of these laws and regulationschanges could result in fines, criminal sanctions againsthave a more significant impact on us our officers or our employees, and prohibitions onas compared to other REITs due to the conductnature of our business. Any such violations could include prohibitions on our ability to offer our offerings in one or more countries, could delay or prevent potential acquisitions, and could also materially damage our reputation, our brand, our international expansion efforts, our ability to attract and retain employees, our business and our operating results. Our success depends, in part, on our abilitysubstantial use of TRSs, particularly non-U.S. TRSs.
In addition, December 2017 legislation made substantial changes to anticipatethe Code, particularly as it relates to the taxation of both corporate income and address these risks and manage these difficulties.
Economic and political uncertainty in developing markets could adversely affect our revenue and earnings.
We conduct business andinternational income. Among those changes are contemplating expansion, in developing markets with economies and governments that tend to be more volatile than thosea significant permanent reduction in the U.S.generally applicable corporate income tax rate and Western Europe. The riskmodifications to the calculation of doing business in developing markets such as Brazil, China, Colombia, India, Indonesia, Russia, Turkey,taxable income, including changes to credits and deductions available to businesses and individuals. This legislation also imposes additional limitations on the United Arab Emirates and other economically volatile areas could adversely affect our operations and earnings. Such risks include the financial instability among customers in these regions, political instability, such as the recent governmental unrest in Turkey, fraud or corruption and other non-economic factors such as irregular trade flows that need to be managed successfully with the helpdeduction of the local governments. In addition, commercial laws in some developing countries can be vague, inconsistently administered and retroactively applied. If we are deemed not to be in compliance with applicable laws in developing countries where we conduct business, our prospects and business in those countries could be harmed,net operating losses, which could then have a material adverse impact on our results of operations and financial position. Our failure to successfully manage economic, political and other risks relating to doing business in developing countries and economically and politically volatile areas could adversely affect our business.
Terrorist activity throughout the world and military action to counter terrorism could adversely impact our business.
The continued threat of terrorist activity and other acts of war or hostility contribute to a climate of political and economic uncertainty. Due to existing or developing circumstances, we may need to incur additional costs in the future cause us to provide enhanced security, including cyber security, which would have a material adversemake additional distributions that will be taxable to our stockholders to the extent of our current or accumulated earnings and profits in order to comply with the REIT distribution requirements. The effect of these and other changes made in this legislation is still uncertain in many respects, both in terms of their direct effect on our business and results of operations. These circumstances may also adversely affect our ability to attract and retain customers, our ability to raise capital and the operation and maintenance of our IBX data centers.
The market price of our stock may continue to be highly volatile, and the valuetaxation of an investment in our common stock may decline.
The market priceand their indirect effect on the value of assets owned by us. Furthermore, many of the sharesprovisions of our common stock has beenthe new law will require additional guidance in order to assess their effect. It is also possible that there will be subsequent legislative amendments proposed with respect to the new law, the effect of which cannot be predicted and may continuebe adverse to be highly volatile. General economicus or our stockholders. Our stockholders are encouraged to consult with their tax advisors about the potential effects that changes in law may have on them and market conditions, and market conditions for telecommunications stocks in general, may affect the market pricetheir ownership of our common stock.
Announcements byWe could incur adverse tax consequences if we fail to integrate an acquisition target in compliance with the requirements to qualify for taxation as a REIT.
We periodically explore and occasionally consummate merger and acquisition transactions. When we consummate these transactions, we structure the acquisition to successfully manage the REIT income, asset, and distribution tests that we must satisfy. We believe that we have and will in the future successfully integrate our acquisition targets in a manner that has and will allow us to timely satisfy the REIT tests applicable to us, but if we failed or others,in the future fail to do so, then we could jeopardize or speculations about our future plans, may also have a significant impact on the market price of our common stock. These may relate to:
our operating results or forecasts;
new issuances of equity, debt or convertible debt by us;
increases in market interest rates and changes in other general market and economic conditions, including inflationary concerns;
changes to our capital allocation, tax planning or business strategy;
lose our qualification for taxation as a REIT, and our declaration of distributionsparticularly if we were not eligible to our stockholders;
a stock repurchase program;
developments in our relationships with corporate customers;
announcements by our customers or competitors;
changes in regulatory policy or interpretation;
governmental investigations;
changesutilize relief provisions set forth in the ratings of our debt or stock by rating agencies or securities analysts;
our purchase or development of real estate and/or additional IBX data centers;
our acquisitions of complementary businesses; or
the operational performance of our IBX data centers.
The stock market has from time to time experienced extreme price and volume fluctuations, which have particularly affected the market prices for telecommunications companies, and which have often been unrelated to their operating performance. These broad market fluctuations may adversely affect the market price of our common stock. One of the factors that investors may consider in deciding whether to buy or sell our common stock is our distribution rate as a percentage of our stock price relative to market interest rates. If market interest rates increase, prospective investors may demand a higher distribution rate or seek alternative investments paying higher dividends or interest. As a result, interest rate fluctuations and conditions in the capital markets may affect the market value of our common stock. Furthermore, companies that have experienced volatility in the market price of their

stock have been subject to securities class action litigation. We may be the target of this type of litigation in the future. Securities litigation against us could result in substantial costs and/or damages, and divert management’s attention from other business concerns, which could seriously harm our business.
If we are not able to generate sufficient operating cash flows or obtain external financing, our ability to fund incremental expansion plans may be limited.
Our capital expenditures, together with ongoing operating expenses, obligations to service our debt and the cash outlays associated with our REIT distribution requirements, are and will continue to be a substantial burden on our cash flow and may decrease our cash balances. Additional debt or equity financing may not be available when needed or, if available, may not be available on satisfactory terms. Our inability to obtain additional debt and/or equity financing or to generate sufficient cash from operations may require us to prioritize projects or curtail capital expenditures which could adversely affect our results of operations.
Fluctuations in foreign currency exchange rates in the markets in which we operate internationally could harm our results of operations.
We may experience gains and losses resulting from fluctuations in foreign currency exchange rates. To date, the majority of revenues and costs in our international operations are denominated in foreign currencies. Where our prices are denominated in U.S. dollars, our sales and revenues could be adversely affected by declines in foreign currencies relative to the U.S. dollar, thereby making our offerings more expensive in local currencies. We are also exposed to risks resulting from fluctuations in foreign currency exchange rates in connection with our international operations. To the extent we are paying contractors in foreign currencies, our operations could cost more than anticipated as a result of declines in the U.S. dollar relative to foreign currencies. In addition, fluctuating foreign currency exchange rates have a direct impact on how our international results of operations translate into U.S. dollars.
Although we currently undertake, and may decide in the future to further undertake, foreign exchange hedging transactions to reduce foreign currency transaction exposure, we do not currently intend to eliminate all foreign currency transaction exposure. In addition, REIT compliance rules may restrict our ability to enter into hedging transactions. Therefore, any weakness of the U.S. dollar may have a positive impact on our consolidated results of operations because the currencies in the foreign countries in which we operate may translate into more U.S. dollars. However, if the U.S. dollar strengthens relative to the currencies of the foreign countries in which we operate, our consolidated financial position and results of operations may be negatively impacted as amounts in foreign currencies will generally translate into fewer U.S. dollars. For additional information on foreign currency risk, refer to our discussion of foreign currency risk in “Quantitative and Qualitative Disclosures About Market Risk” included in Item 7A of this Annual Report on Form 10-K.
Changes in U.S. or foreign tax laws, regulations, or interpretations thereof, including changes to tax rates, may adversely affect our financial statements and cash taxes.
We are a U.S. company with global subsidiaries and are subject to income taxes in the U.S. (although currently limited due to our taxation as a REIT) and many foreign jurisdictions. Significant judgment is required in determining our worldwide provision for income taxes. Although we believe that we have adequately assessed and accounted for our potential tax liabilities, and that our tax estimates are reasonable, there can be no certainty that additional taxes will not be due upon audit of our tax returns or as a result of changes to the tax laws and interpretations thereof. The U.S. government as well as the governments of many of the countries in which we operate are actively discussing changes to the corporate recognition and taxation of worldwide income. The nature and timing of any changes to each jurisdiction’s tax laws and the impact on our future tax liabilities cannot be predicted with any accuracy but could materially and adversely impact our results of operations and financial position or cash flows.
We are continuing to invest in our expansion efforts but may not have sufficient customer demand in the future to realize expected returns on these investments.
We are considering the acquisition or lease of additional properties and the construction of new IBX data centers beyond those expansion projects already announced. We will be required to commit substantial operational and financial resources to these IBX data centers, generally 12 to 18 months in advance of securing customer contracts, and we may not have sufficient customer demand in those markets to support these centers once they are built. In addition, unanticipated technological changes could affect customer requirements for data centers, and we may not have built such requirements into our new IBX data centers. Either of these contingencies, if they were to occur, could make it difficult for us to realize expected or reasonable returns on these investments.
Our offerings have a long sales cycle that may harm our revenues and operating results.
A customer’s decision to purchase our offerings typically involves a significant commitment of resources. In addition, some customers will be reluctant to commit to locating in our IBX data centers until they are confident that the IBX data center has

adequate carrier connections. As a result, we have a long sales cycle. Furthermore, we may devote significant time and resources in pursuing a particular sale or customer that does not result in revenue. We have also significantly expanded our sales force in recent years, and it will take time for these new hires to become fully productive.
Delays due to the length of our sales cycle may materially and adversely affect our revenues and operating results, which could harm our ability to meet our forecasts and cause volatility in our stock price.
Any failure of our physical infrastructure or offerings could lead to significant costs and disruptions that could reduce our revenue and harm our business reputation and financial results.
Our business depends on providing customers with highly reliable solutions. We must safehouse our customers’ infrastructure and equipment located in our IBX data centers and ensure our non-IBX offices remain operational. We own certain of our IBX data centers, but others are leased by us, and we rely on the landlord for basic maintenance of our leased IBX data centers and office buildings. If such landlord has not maintained a leased property sufficiently, we may be forced into an early exit from the center which could be disruptive to our business. Furthermore, we continue to acquire IBX data centers not built by us. If we discover that these buildings and their infrastructure assets are not in the condition we expected when they were acquired, we may be required to incur substantial additional costs to repair or upgrade the centers.
Our office buildings and IBX data centers are subject to failure resulting from numerous factors, including:
human error;
equipment failure;
physical, electronic and cyber security breaches;
fire, earthquake, hurricane, flood, tornado and other natural disasters;
extreme temperatures;
water damage;
fiber cuts;
power loss;
terrorist acts;
sabotage and vandalism; and
failure of business partners who provide our resale products.
Problems at one or more of our IBX data centers, whether or not within our control, could result in service interruptions or significant equipment damage. We have service level commitment obligations to certain of our customers. As a result, service interruptions or significant equipment damage in our IBX data centers could result in difficulty maintaining service level commitments to these customers and potential claims related to such failures. Because our IBX data centers are critical to many of our customers’ businesses, service interruptions or significant equipment damage in our IBX data centers could also result in lost profits or other indirect or consequential damages to our customers. We cannot guarantee that a court would enforce any contractual limitations on our liability in the event that one of our customers brings a lawsuit against us as a result of a problem at one of our IBX data centers and we may decide to reach settlements with affected customers irrespective of any such contractual limitations. In addition, any loss of service, equipment damage or inability to meet our service level commitment obligations could reduce the confidence of our customers and could consequently impair our ability to obtain and retain customers, which would adversely affect both our ability to generate revenues and our operating results.
Furthermore, we are dependent upon internet service providers, telecommunications carriers and other website operators in the Americas, Asia-Pacific and EMEA regions and elsewhere, some of which have experienced significant system failures and electrical outages in the past. Our customers may in the future experience difficulties due to system failures unrelated to our systems and offerings. If, for any reason, these providers fail to provide the required services, our business, financial condition and results of operations could be materially and adversely impacted.
We are currently making significant investments in our back office information technology systems and processes.  Difficulties from or disruptions to these efforts may interrupt our normal operations and adversely affect our business and operating results.
We have been investing heavily in our back office information technology systems and processes for a number of years and expect such investment to continue for the foreseeable future in support of our pursuit of global, scalable solutions across all geographies and functions that we operate in.  These continuing investments include 1) ongoing improvements to the customer experience from initial quote to customer billing and our revenue recognition process; 2) integration of recently-acquired operations such as Bit-isle and TelecityGroup and the forthcoming Verizon asset purchase onto our various information technology systems; and 3) implementation of new tools and technology to either further streamline and automate processes, such as our fixed asset procure to disposal process, or to support our compliance with evolving U.S. GAAP, such as the new revenue accounting and

leasing standards.  As a result of our continued work on these projects, we may experience difficulties with our systems, management distraction and significant business disruptions. For example, difficulties with our systems may interrupt our ability to accept and deliver customer orders and may adversely impact our overall financial operations, including our accounts payable, accounts receivables, general ledger, fixed assets, revenue recognition, close processes, internal financial controls and our ability to otherwise run and track our business. We may need to expend significant attention, time and resources to correct problems or find alternative sources for performing these functions. All of these changes to our financial systems also create an increased risk of deficiencies in our internal controls over financial reporting until such systems are stabilized. Such significant investments in our back office systems may take longer to complete and cost more than originally planned. In addition, we may not realize the full benefits we hoped to achieve and there is a risk of an impairment charge if we decide that portions of these projects will not ultimately benefit the company or are de-scoped. Finally, the collective impact of these changes to our business has placed significant demands on impacted employees across multiple functions, increasing the risk of errors and control deficiencies in our financial statements, distraction from the effective operation of our business and difficulty in attracting and retaining employees. Any such difficulties or disruptions may adversely affect our business and operating results.
Inadequate external and internal information, including budget and planning data, could prove to be inaccurate and lead to inaccurate financial forecasts and inappropriate financial decisions.

Our financial forecasts are dependent on estimates and assumptions including budget and planning data, market growth, foreign exchange rates, our ability to remain qualified as a REIT, and our ability to generate sufficient cash flow to reinvest in the business, fund internal growth, make acquisitions, pay dividends, and meet our debt obligations. Our financial projections are based on historical experience and on various other assumptions that our management believes to be reasonable under the circumstances and at the time they are made. However, if our external and internal information is inadequate, our actual results may differ materially from our forecasts and cause us to make inappropriate financial decisions. Any material variation between our financial forecasts and our actual results may also adversely affect the our future profitability, stock price and stockholder confidence.
The insurance coverage that we purchase may prove to be inadequate.
We carry liability, property, business interruption and other insurance policies to cover insurable risks to our company. We select the types of insurance, the limits and the deductibles based on our specific risk profile, the cost of the insurance coverage versus its perceived benefit and general industry standards. Our insurance policies contain industry standard exclusions for events such as war and nuclear reaction. We purchase minimal levels of earthquake insurance for certain of our IBX data centers, but for most of our data centers, including many in California, we have elected to self-insure. The earthquake and flood insurance that we do purchase would be subject to high deductibles. Any of the limits of insurance that we purchase, including those for cyber risks, could prove to be inadequate, which could materially and adversely impact our business, financial condition and results of operations.
Our construction of additional new IBX data centers or IBX data center expansions could involve significant risks to our business.
In order to sustain our growth in certain of our existing and new markets, we must expand an existing data center, lease a new facility or acquire suitable land, with or without structures, to build new IBX data centers from the ground up. Expansions or new builds are currently underway, or being contemplated, in many of our markets. Any related construction requires us to carefully select and rely on the experience of one or more designers, general contractors, and associated subcontractors during the design and construction process. Should a designer, general contractor or significant subcontractor experience financial or other problems during the design or construction process, we could experience significant delays, increased costs to complete the project and/or other negative impacts to our expected returns.
Site selection is also a critical factor in our expansion plans. There may not be suitable properties available in our markets with the necessary combination of high power capacity and fiber connectivity, or selection may be limited. Thus, while we may prefer to locate new IBX data centers adjacent to our existing locations it may not always be possible. In the event we decide to build new IBX data centers separate from our existing IBX data centers, we may provide interconnection solutions to connect these two centers. Should these solutions not provide the necessary reliability to sustain connection, this could result in lower interconnection revenue and lower margins and could have a negative impact on customer retention over time.
Environmental regulations may impose upon us new or unexpected costs.
We are subject to various federal, state, local and international environmental and health and safety laws and regulations, including those relating to the generation, storage, handling and disposal of hazardous substances and wastes. Certain of these laws and regulations also impose joint and several liability, without regard to fault, for investigation and cleanup costs on current

and former owners and operators of real property and persons who have disposed of or released hazardous substances into the environment. Our operations involve the use of hazardous substances and materials such as petroleum fuel for emergency generators, as well as batteries, cleaning solutions and other materials. In addition, we lease, own or operate real property at which hazardous substances and regulated materials have been used in the past. At some of our locations, hazardous substances or regulated materials are known to be present in soil or groundwater, and there may be additional unknown hazardous substances or regulated materials present at sites we own, operate or lease. At some of our locations, there are land use restrictions in place relating to earlier environmental cleanups that do not materially limit our use of the sites. To the extent any hazardous substances or any other substance or material must be cleaned up or removed from our property, we may be responsible under applicable laws, regulations or leases for the removal or cleanup of such substances or materials, the cost of which could be substantial.
Electricity is a material cost in connection with our business, and an increase in the cost of electricity could adversely affect us. The generators that provide electricity to our facilities are subject to environmental laws, regulations and permit requirements that are subject to material change, which could result in increases in generators’ compliance costs that may be passed through to us. Regulations recently promulgated by U.S. EPA could limit air emissions from power plants, restrict discharges of cooling water, and otherwise impose new operational restraints on conventional power plants that could increase costs of electricity. In addition, we are directly subject to environmental, health and safety laws regulating air emissions, storm water management and other issues arising in our business. For example, our emergency generators are subject to state and federal regulations governing air pollutants, which could limit the operation of those generators or require the installation of new pollution control technologies. While environmental regulations do not normally impose material costs upon our operations, unexpected events, equipment malfunctions, human error and changes in law or regulations, among other factors, can lead to violations of environmental laws, regulations or permits, and to additional unexpected operational limitations or costs.
Regulation of greenhouse gas (“GHG”) emissions could increase the cost of electricity by reducing amounts of electricity generated from fossil fuels, by requiring the use of more expensive generating methods or by imposing taxes or fees upon electricity generation or use. The U.S. EPA published a regulation in October 2015, called the “Clean Power Plan,” that is intended to reduce GHG emissions from existing fossil fuel-fired power plants by 32 percent from 2005 levels by 2030. Under the rule, each state is required to develop a plan to reduce state-wide carbon dioxide emissions to meet a specified emissions target set by EPA for that state. Implementation of the Clean Power Plan was stayed by the Supreme Court pending resolution of the underlying legal challenges, and the future of the Clean Power Plan under President Trump’s administration is uncertain in any event. Consequently, the impact of the Clean Power Plan cannot be determined at this time. While we do not expect these regulatory developments to materially increase our costs of electricity, the costs remain difficult to predict or estimate.
State regulations also have the potential to increase our costs of obtaining electricity. While GHG regulation at the federal level is unlikely in the near future, certain states, like California, also have issued or may enact environmental regulations that could materially affect our facilities and electricity costs. California has limited GHG emissions from new and existing conventional power plants by imposing regulatory caps and by selling or auctioning the rights to emission allowances. State programs have not had a material adverse effect on our electricity costs to date, but due to the market-driven nature of some of the programs, could do so in the future. Such laws and regulations are also subject to change at any time.
Aside from regulatory requirements, we have separately undertaken to procure energy from renewable energy projects in order to support new renewables development. The costs of procuring such energy may exceed the costs of procuring electricity from existing sources, such as existing utilities or electric service provided through conventional grids. These efforts to support and enhance renewable electricity generation may increase our costs of electricity above those that would be incurred through procurement of conventional electricity from existing sources.
If we are unable to recruit or retain qualified personnel, our business could be harmed.
We must continue to identify, hire, train and retain IT professionals, technical engineers, operations employees, and sales, marketing, finance and senior management personnel who maintain relationships with our customers and who can provide the technical, strategic and marketing skills required for our company to grow. There is a shortage of qualified personnel in these fields, and we compete with other companies for the limited pool of talent. The failure to recruit and retain necessary personnel, including, but not limited to, members of our executive team, could harm our business and our ability to grow our company.
We may not be able to compete successfully against current and future competitors.
We must continue to evolve our product strategy and be able to differentiate our IBX data centers and product offerings from those of our competitors. In addition to competing with other neutral colocation providers, we compete with traditional colocation providers, including telecommunications companies, carriers, internet service providers, managed services providers and large REITs who also operate in our market and may enjoy a cost advantage in providing offerings similar to those provided by our IBX

data centers. We may experience competition from our landlords which could also reduce the amount of space available to us for expansion in the future. Rather than leasing available space in our buildings to large single tenants, they may decide to convert the space instead to smaller square foot units designed for multi-tenant colocation use, blurring the line between retail and wholesale space. We may also face competition from existing competitors or new entrants to the market seeking to replicate our global IBX data center concept by building or acquiring data centers, offering colocation on neutral terms or by replicating our strategy and messaging. Finally, customers may also decide it is cost-effective for them to build out their own data centers. Once customers have an established data center footprint, either through a relationship with one of our competitors or through in-sourcing, it may be extremely difficult to convince them to relocate to our IBX data centers.
Some of our competitors may adopt aggressive pricing policies, especially if they are not highly leveraged or have lower return thresholds than we do. As a result, we may suffer from pricing pressure that would adversely affect our ability to generate revenues. Some of these competitors may also provide our target customers with additional benefits, including bundled communication services or cloud services, and may do so in a manner that is more attractive to our potential customers than obtaining space in our IBX data centers. Similarly, with growing acceptance of cloud-based technologies, we are at risk of losing customers that may decide to fully leverage cloud infrastructure offerings instead of managing their own. Competitors could also operate more successfully or form alliances to acquire significant market share.
Finally, as our customers evolve their IT strategies, we must remain flexible and evolve along with industry and market shifts. Ineffective planning and execution in our cloud strategy and product development lifecycle may cause difficulty in sustaining competitive advantage in our products and services.
Failure to compete successfully may materially adversely affect our financial condition, cash flows and results of operations.
Our business could be harmed by prolonged power outages or shortages, increased costs of energy or general lack of availability of electrical resources.
Our IBX data centers are susceptible to regional costs of power, power shortages, planned or unplanned power outages and limitations, especially internationally, on the availability of adequate power resources.
Power outages, such as those relating to large storms, earthquakes and tsunamis, could harm our customers and our business. We attempt to limit our exposure to system downtime by using backup generators and power supplies; however, we may not be able to limit our exposure entirely even with these protections in place. Some of our IBX data centers are located in leased buildings where, depending upon the lease requirements and number of tenants involved, we may or may not control some or all of the infrastructure including generators and fuel tanks. As a result, in the event of a power outage, we may be dependent upon the landlord, as well as the utility company, to restore the power.
In addition, global fluctuations in the price of power can increase the cost of energy, and although contractual price increase clauses exist in the majority of our customer agreements, we may not always choose to pass these increased costs on to our customers.
In each of our markets, we rely on third parties to provide a sufficient amount of power for current and future customers. At the same time, power and cooling requirements are growing on a per unit basis. As a result, some customers are consuming an increasing amount of power per cabinet. We generally do not control the amount of power our customers draw from their installed circuits. This means that we could face power limitations in our IBX data centers. This could have a negative impact on the effective available capacity of a given center and limit our ability to grow our business, which could have a negative impact on our financial performance, operating results and cash flows.
We may also have difficulty obtaining sufficient power capacity for potential expansion sites in new or existing markets. We may experience significant delays and substantial increased costs demanded by the utilities to provide the level of electrical service required by our current IBX data center designs.
If our internal controls are found to be ineffective, our financial results or our stock price may be adversely affected.
Our most recent evaluation of our controls resulted in our conclusion that, as of December 31, 2016, in compliance with Section 404 of the Sarbanes-Oxley Act of 2002, our internal controls over financial reporting were effective. Our ability to manage our operations and growth, through, for example, the acquisition and integration of Bit-isle, TelecityGroup and the Verizon assets, the adoption of new accounting principles and our overhaul of our back office systems that support customer experience from initial quote to customer billing and our revenue recognition process, will require us to further develop our controls and reporting systems and implement or amend new or existing controls and reporting systems in those areas where the implementation and integration is still ongoing. All of these changes to our financial systems and the implementation and integration of acquisitions create an increased risk of deficiencies in our internal controls over financial reporting. If, in the future, our internal control over

financial reporting is found to be ineffective, or if a material weakness is identified in our controls over financial reporting, our financial results may be adversely affected. Investors may also lose confidence in the reliability of our financial statements which could adversely affect our stock price.
The use of high power density equipment may limit our ability to fully utilize our older IBX data centers.
Some customers have increased their use of high power density equipment, such as blade servers, in our IBX data centers which has increased the demand for power on a per cabinet basis. Because many of our IBX data centers were built a number of years ago, the current demand for power may exceed the designed electrical capacity in these centers. As power, not space, is a limiting factor in many of our IBX data centers, our ability to fully utilize those IBX data centers may be limited. The ability to increase the power capacity of an IBX data center, should we decide to, is dependent on several factors including, but not limited to, the local utility’s ability to provide additional power; the length of time required to provide such power; and/or whether it is feasible to upgrade the electrical infrastructure of an IBX data center to deliver additional power to customers. Although we are currently designing and building to a higher power specification than that of many of our older IBX data centers, there is a risk that demand will continue to increase and our IBX data centers could become underutilized sooner than expected.
Our operating results may fluctuate.
We have experienced fluctuations in our results of operations on a quarterly and annual basis. The fluctuations in our operating results may cause the market price of our common stock to be volatile. We may experience significant fluctuations in our operating results in the foreseeable future due to a variety of factors, including, but not limited to:
fluctuations of foreign currencies in the markets in which we operate;
the timing and magnitude of depreciation and interest expense or other expenses related to the acquisition, purchase or construction of additional IBX data centers or the upgrade of existing IBX data centers;
demand for space, power and services at our IBX data centers;
changes in general economic conditions, such as an economic downturn, or specific market conditions in the telecommunications and internet industries, both of which may have an impact on our customer base;
charges to earnings resulting from past acquisitions due to, among other things, impairment of goodwill or intangible assets, reduction in the useful lives of intangible assets acquired, identification of additional assumed contingent liabilities or revised estimates to restructure an acquired company’s operations;
the duration of the sales cycle for our offerings and our ability to ramp our newly-hired sales persons to full productivity within the time period we have forecasted;
restructuring charges or reversals of restructuring charges, which may be necessary due to revised sublease assumptions, changes in strategy or otherwise;
acquisitions or dispositions we may make;
the financial condition and credit risk of our customers;
the provision of customer discounts and credits;
the mix of current and proposed products and offerings and the gross margins associated with our products and offerings;
the timing required for new and future IBX data centers to open or become fully utilized;
competition in the markets in which we operate;
conditions related to international operations;
increasing repair and maintenance expenses in connection with aging IBX data centers;
lack of available capacity in our existing IBX data centers to generate new revenue or delays in opening new or acquired IBX data centers that delay our ability to generate new revenue in markets which have otherwise reached capacity;
changes in rent expense as we amend our IBX data center leases in connection with extending their lease terms when their initial lease term expiration dates approach or changes in shared operating costs in connection with our leases, which are commonly referred to as common area maintenance expenses;
the timing and magnitude of other operating expenses, including taxes, expenses related to the expansion of sales, marketing, operations and acquisitions, if any, of complementary businesses and assets;
the cost and availability of adequate public utilities, including power;
changes in employee stock-based compensation;
overall inflation;
increasing interest expense due to any increases in interest rates and/or potential additional debt financings;
changes in our tax planning strategies or failure to realize anticipated benefits from such strategies;
changes in income tax benefit or expense; and
changes in or new generally accepted accounting principles (“GAAP”) in the U.S. as periodically released by the Financial Accounting Standards Board (“FASB”).

Any of the foregoing factors, or other factors discussed elsewhere in this report, could have a material adverse effect on our business, results of operations and financial condition. Although we have experienced growth in revenues in recent quarters, this growth rate is not necessarily indicative of future operating results. Prior to 2008, we had generated net losses every fiscal year since inception. It is possible that we may not be able to generate net income on a quarterly or annual basis in the future. In addition, a relatively large portion of our expenses are fixed in the short-term, particularly with respect to lease and personnel expenses, depreciation and amortization and interest expenses. Therefore, our results of operations are particularly sensitive to fluctuations in revenues. As such, comparisons to prior reporting periods should not be relied upon as indications of our future performance. In addition, our operating results in one or more future quarters may fail to meet the expectations of securities analysts or investors.
Our days sales outstanding (DSO) may be negatively impacted by acquisitions.
Historically, while our DSO results have fluctuated from time to time, we have generally experienced strong collections of our accounts receivables as evidenced by our prior DSO metrics. However, our DSO may be negatively impacted in integrating recent acquisitions into our processes and systems which may have a negative impact on our operating cash flows, liquidity and financial performance.
Our reported financial results may be adversely affected by changes in accounting principles generally accepted in the U.S.
We prepare our financial statements in conformity with accounting principles generally accepted in the U.S. In May 2014, the FASB issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers and issued subsequent amendments to the initial guidance in August 2015, March 2016, April 2016 and May 2016 within ASU 2015-14, ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2016-20, respectively (ASU 2014-09, ASU 2015-14, ASU 2016-08, ASU 2016-10, ASU 2016-11, ASU 2016-12 and ASU 2016-20 collectively, "Topic 606"). Topic 606, as amended, is effective for annual reporting periods beginning after December 15, 2017. In February 2016, the FASB issued ASU 2016-02, Leases ("Topic 842") ("ASU 2016-02"). Topic 842 is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. Both Topic 606 and Topic 842 will replace the existing revenue and lease accounting standards, respectively. Although we are currently in the process of evaluating the impact of Topic 606 and Topic 842 on our consolidated financial statements, these new standards could have could have a significant effect on our reported financial results, cause unexpected financial reporting fluctuations and require us to make costly changes to our operational processes and accounting systems. Thus, adoption of the standards could have a significant impact on our financial statements.
We may incur goodwill and other intangible asset impairment charges, or impairment charges to our property, plant and equipment, which could result in a significant reduction to our earnings.
In accordance with GAAP, we are required to assess our goodwill and other intangible assets annually, or more frequently whenever events or changes in circumstances indicate potential impairment, such as changing market conditions or any changes in key assumptions. If the testing performed indicates that an asset may not be recoverable, we are required to record a non-cash impairment charge for the difference between the carrying value of the goodwill or other intangible assets and the implied fair value of the goodwill or other intangible assets in the period the determination is made.
We also monitor the remaining net book values of our property, plant and equipment periodically, including at the individual IBX data center level. Although each individual IBX data center is currently performing in line with our expectations, the possibility that one or more IBX data centers could begin to under-perform relative to our expectations is possible and may also result in non-cash impairment charges.
These charges could be significant, which could have a material adverse effect on our business, results of operations or financial condition.
We have incurred substantial losses in the past and may incur additional losses in the future.
As of December 31, 2016, our retained earnings were $18.6 million. Although we have generated net income for each fiscal year since 2008, except for the year ended December 31, 2014, we are also currently investing heavily in our future growth through the build out of multiple additional IBX data centers and IBX data center expansions as well as acquisitions of complementary businesses. As a result, we will incur higher depreciation and other operating expenses, as well as acquisition costs and interest expense, that may negatively impact our ability to sustain profitability in future periods unless and until these new IBX data centers generate enough revenue to exceed their operating costs and cover our additional overhead needed to scale our business for this anticipated growth. The current global financial uncertainty may also impact our ability to sustain profitability if we cannot generate sufficient revenue to offset the increased costs of our recently-opened IBX data centers or IBX data centers currently under construction. In addition, costs associated with the acquisition and integration of any acquired companies, as well as the additional interest expense associated with debt financing we have undertaken to fund our growth initiatives, may also negatively impact our

ability to sustain profitability. Finally, given the competitive and evolving nature of the industry in which we operate, we may not be able to sustain or increase profitability on a quarterly or annual basis.
The failure to obtain favorable terms when we renew our IBX data center leases, or the failure to renew such leases, could harm our business and results of operations.
While we own certain of our IBX data centers, others are leased under long-term arrangements with lease terms expiring at various dates through 2065. These leased centers have all been subject to significant development by us in order to convert them from, in most cases, vacant buildings or warehouses into IBX data centers. Most of our IBX data center leases have renewal options available to us. However, many of these renewal options provide for the rent to be set at then-prevailing market rates. To the extent that then-prevailing market rates or negotiated rates are higher than present rates, these higher costs may adversely impact our business and results of operations, or we may decide against renewing the lease. In the event that an IBX data center lease does not have a renewal option, or we fail to exercise a renewal option in a timely fashion and lose our right to renew the lease, we may not be successful in negotiating a renewal of the lease with the landlord. A failure to renew a lease could force us to exit a building prematurely, which could be disruptive to our business, harm our customer relationships, expose us to liability under our customer contracts, cause us to take impairment charges and negatively affect our operating results.
We depend on a number of third parties to provide internet connectivity to our IBX data centers; if connectivity is interrupted or terminated, our operating results and cash flow could be materially and adversely affected.
The presence of diverse telecommunications carriers’ fiber networks in our IBX data centers is critical to our ability to retain and attract new customers. We are not a telecommunications carrier, and as such, we rely on third parties to provide our customers with carrier services. We believe that the availability of carrier capacity will directly affect our ability to achieve our projected results. We rely primarily on revenue opportunities from the telecommunications carriers’ customers to encourage them to invest the capital and operating resources required to connect from their centers to our IBX data centers. Carriers will likely evaluate the revenue opportunity of an IBX data center based on the assumption that the environment will be highly competitive. We cannot provide assurance that each and every carrier will elect to offer its services within our IBX data centers or that once a carrier has decided to provide internet connectivity to our IBX data centers that it will continue to do so for any period of time.
Our new IBX data centers require construction and operation of a sophisticated redundant fiber network. The construction required to connect multiple carrier facilities to our IBX data centers is complex and involves factors outside of our control, including regulatory processes and the availability of construction resources. Any hardware or fiber failures on this network may result in significant loss of connectivity to our new IBX data center expansions. This could affect our ability to attract new customers to these IBX data centers or retain existing customers.
If the establishment of highly diverse internet connectivity to our IBX data centers does not occur, is materially delayed or is discontinued, or is subject to failure, our operating results and cash flow will be adversely affected.
We may be vulnerable to security breaches which could disrupt our operations and have a material adverse effect on our financial performance and operating results.
We face risks associated with unauthorized access to our computer systems, loss or destruction of data, computer viruses, malware, distributed denial-of-service attacks, or other malicious activities. These threats may result from human error, equipment failure, or fraud or malice on the part of employees or third parties. A party who is able to compromise the security measures on our networks or the security of our infrastructure could misappropriate either our proprietary information or the personal information of our customers or our employees, or cause interruptions or malfunctions in our operations or our customers’ operations. As we provide assurances to our customers that we provide a high level of security, such a compromise could be particularly harmful to our brand and reputation. We may be required to expend significant capital and resources to protect against such threats or to alleviate problems caused by breaches in security. As techniques used to breach security change frequently, and are generally not recognized until launched against a target, we may not be able to promptly detect that a cyber breach has occurred, or implement security measures in a timely manner or, if and when implemented, we may not be able to determine the extent to which these measures could be circumvented. Any breaches that may occur could expose us to increased risk of lawsuits, regulatory penalties, loss of existing or potential customers, damage relating to loss of proprietary information, harm to our reputation and increases in our security costs, which could have a material adverse effect on our financial performance and operating results. We maintain insurance coverage for cyber risks but such coverage may be unavailable or insufficient to cover our losses.    
We offer professional services to our customers where we consult on data center solutions and assist with implementations. We also offer managed services in certain of our foreign jurisdictions outside of the U.S. where we manage the data center infrastructure for our customers. The access gained from these services to our clients’ networks and data creates some risk that our clients' networks or data will be improperly accessed. We may also design our clients’ cloud storage systems in such a way that exposes our clients to increased risk of data breach.  If Equinix were held to be responsible for any such a breach, it could

result in a significant loss to Equinix, including damage to Equinix’s client relationships, harm to our brand and reputation, and legal liability.
We have government customers, which subjects us to risks including early termination, audits, investigations, sanctions and penalties.
We derive some revenues from contracts with the U.S. government, state and local governments and foreign governments and this portion of our business will be larger once we complete the Verizon Asset Acquisition. Some of these customers may terminate all or part of their contracts at any time, without cause. There is increased pressure for governments and their agencies, both domestically and internationally, to reduce spending. Some of our federal government contracts are subject to the approval of appropriations being made by the U.S. Congress to fund the expenditures under these contracts. Similarly, some of our contracts at the state and local levels are subject to government funding authorizations.
Additionally, government contracts are generally subject to audits and investigations which could result in various civil and criminal penalties and administrative sanctions, including termination of contracts, refund of a portion of fees received, forfeiture of profits, suspension of payments, fines and suspensions or debarment from future government business.
Because we depend on the development and growth of a balanced customer base, including key magnet customers, failure to attract, grow and retain this base of customers could harm our business and operating results.
Our ability to maximize revenues depends on our ability to develop and grow a balanced customer base, consisting of a variety of companies, including enterprises, cloud, digital content and financial companies, and network service providers. We consider certain of these customers to be key magnets in that they draw in other customers. The more balanced the customer base within each IBX data center, the better we will be able to generate significant interconnection revenues, which in turn increases our overall revenues. Our ability to attract customers to our IBX data centers will depend on a variety of factors, including the presence of multiple carriers, the mix of our offerings, the overall mix of customers, the presence of key customers attracting business through vertical market ecosystems, the IBX data center’s operating reliability and security and our ability to effectively market our offerings. However, some of our customers may face competitive pressures and may ultimately not be successful or may be consolidated through merger or acquisition. If these customers do not continue to use our IBX data centers it may be disruptive to our business. Finally, the uncertain global economic climate may harm our ability to attract and retain customers if customers slow spending, or delay decision-making, on our offerings, or if customers begin to have difficulty paying us and we experience increased churn in our customer base. Any of these factors may hinder the development, growth and retention of a balanced customer base and adversely affect our business, financial condition and results of operations.
We may be subject to securities class action and other litigation, which may harm our business and results of operations.
We may be subject to securities class action or other litigation. For example, securities class action litigation has often been brought against a company following periods of volatility in the market price of its securities. Litigation can be lengthy, expensive, and divert management’s attention and resources. Results cannot be predicted with certainty and an adverse outcome in litigation could result in monetary damages or injunctive relief that could seriously harm our business, results of operations, financial condition or cash flows.
We may not be able to protect our intellectual property rights.
We cannot make assurances that the steps taken by us to protect our intellectual property rights will be adequate to deter misappropriation of proprietary information or that we will be able to detect unauthorized use and take appropriate steps to enforce our intellectual property rights. We also are subject to the risk of litigation alleging infringement of third-party intellectual property rights. Any such claims could require us to spend significant sums in litigation, pay damages, develop non-infringing intellectual property, or acquire licenses to the intellectual property that is the subject of the alleged infringement.
Government regulation may adversely affect our business.
Various laws and governmental regulations, both in the U.S. and abroad, governing internet related services, related communications services and information technologies remain largely unsettled, even in areas where there has been some legislative action. For example, the Federal Communications Commission (“FCC”) adopted network neutrality rules that may result in material changes in the regulations and contribution regime affecting us and our customers. However, the new FCC leadership may seek to overturn the current rules thus making the future of network neutrality and its impact on Equinix uncertain. There may also be forthcoming regulation in the U.S. in the areas of cybersecurity, data privacy and data security, any of which could impact Equinix and our customers. Similarly, data privacy regulations outside of the U.S. continue to evolve and must be addressed by Equinix as a global company.

Likewise, as part of a review of the current equity market structure, the Securities and Exchange Commission and the Commodity Futures Trading Commission (“CFTC”) have both sought comments regarding the regulation of independent data centers, such as us, which provide colocation for financial markets and exchanges.  The CFTC is also considering regulation of companies that use automated and high-frequency trading systems. Any such regulation may ultimately affect our provision of offerings. 
We remain focused on whether and how existing and changing laws, such as those governing intellectual property, privacy, libel, telecommunications services and taxation, apply to the internet and to related offerings such as ours, and substantial resources may be required to comply with regulations or bring any non-compliant business practices into compliance with such regulations. In addition, the continuing development of the market for online commerce and the displacement of traditional telephony service by the internet and related communications services may prompt an increased call for more stringent consumer protection laws or other regulation both in the U.S. and abroad that may impose additional burdens on companies conducting business online and their service providers. 
The adoption, or modification of laws or regulations relating to the internet and our business, or interpretations of existing laws, could have a material adverse effect on our business, financial condition and results of operations.
Industry consolidation may have a negative impact on our business model.
If customers combine businesses, they may require less colocation space, which could lead to churn in our customer base. Regional competitors may also consolidate to become a global competitor. Consolidation of our customers and/or our competitors may present a risk to our business model and have a negative impact on our revenues.
We have various mechanisms in place that may discourage takeover attempts.
Certain provisions of our certificate of incorporation and bylaws may discourage, delay or prevent a third party from acquiring control of us in a merger, acquisition or similar transaction that a stockholder may consider favorable. Such provisions include:
ownership limitations and transfer restrictions relating to our stock that are intended to facilitate our compliance with certain REIT rules relating to share ownership;
authorization for the issuance of “blank check” preferred stock;
the prohibition of cumulative voting in the election of directors;
limits on the persons who may call special meetings of stockholders;
limits on stockholder action by written consent; and
advance notice requirements for nominations to the Board of Directors or for proposing matters that can be acted on by stockholders at stockholder meetings.
In addition, Section 203 of the Delaware General Corporation Law, which restricts certain business combinations with interested stockholders in certain situations, may also discourage, delay or prevent someone from acquiring or merging with us.Code.
ITEM 1B.UNRESOLVED STAFF COMMENTS
There is no disclosure to report pursuant to Item 1B.
ITEM 2.PROPERTIES
Our executive offices are located in Redwood City, California, and we also have sales offices in several cities throughout the U.S. Our Asia-Pacific headquarters office is located in Hong Kong and we also have office spacesales offices in Shanghai, China; Singapore; Tokyo, Japan; and Sydney, Australia.several cities throughout Asia-Pacific. Our EMEA headquarters office is located in Amsterdam, the Netherlands and our regional sales offices in EMEA are based in our IBX data centers in EMEA. We have entered into leases for certain

The following table presents the locations of our leased and owned IBX data centers in Atlanta, Georgia; New York, New York; Dallas, Texas; Chicago, Illinois; Englewood, Colorado; Los Angeles, Palo Alto, San Jose, Santa Clara and Sunnyvale, California; Miami, Florida; Newark, North Bergen and Secaucus, New Jersey; Philadelphia, Pennsylvania; Reston and Vienna, Virginia; Seattle, Washington; Toronto, Canada; Waltham, Massachusetts and Rio De Janeiro and Sao Paolo, Brazil in the Americas region; Shanghai, China; Hong Kong; Singapore; Sydney, Australia and Osaka and Tokyo, Japan in the Asia-Pacific region; Dubai, U.A.E.; London and Manchester, United Kingdom; Paris, France; Frankfurt, Munich and Dusseldorf, Germany; Dublin, Ireland; Helsinki, Finland; Istanbul, Turkey; Milan, Italy; Stockholm, Sweden; Warsaw, Poland; Zurich and Geneva, Switzerland; and Amsterdam, Enschede and Zwolle, the Netherlands in the EMEA region. We own certainas of our IBX data centers in Ashburn, Virginia; Chicago, Illinois; Los Angeles and San Jose, California; Melbourne, Australia; Secaucus, New Jersey; New York, New York; Sofia, Bulgaria; Paris, France; Frankfurt, Germany; and Amsterdam, the Netherlands. We ownDecember 31, 2018:

campuses in Ashburn, Virginia; Silicon Valley; Paris, France; and Frankfurt, Germany that house some of our IBX data centers mentioned in the preceding sentence.
Leased
Owned (1)
AmericasRio de Janeiro & Sao Paulo, Brazil;
Toronto, Canada;
Atlanta, Georgia;
Boston, Massachusetts;
Chicago, Illinois;
Dallas, Texas;
Washington D.C. & Ashburn, Virginia;
Denver, Colorado;
Miami, Florida;
New York, New York;
Philadelphia, Pennsylvania;
Seattle, Washington;
Silicon Valley & Los Angeles, California
Chicago, Illinois;
Washington D.C., Ashburn & Culpeper, Virginia;
Silicon Valley & Los Angeles, California;
Rio de Janeiro & São Paulo, Brazil;
Atlanta, Georgia;
Boston, Massachusetts;
Dallas & Houston, Texas;
Denver, Colorado;
Miami, Florida;
New York, New York;
Seattle, Washington;
Bogotá, Columbia
EMEAParis, France;
Frankfurt & Munich, Germany;
Amsterdam & East Netherlands, the Netherlands;
Geneva & Zurich, Switzerland;
Dubai & Abu Dhabi, U.A.E.;
London & Manchester, United Kingdom;
Helsinki, Finland;
Dublin, Ireland;
Milan, Italy;
Stockholm, Sweden;
Istanbul, Turkey;
Warsaw, Poland;
Barcelona, Madrid & Seville, Spain
Paris, France;
Frankfurt & Dusseldorf, Germany;
London, United Kingdom;
Amsterdam, the Netherlands;
Dublin, Ireland;
Sofia, Bulgaria;
Istanbul, Turkey;
Milan, Italy;
Helsinki, Finland;
Lisbon, Portugal;
Stockholm, Sweden
Asia-PacificHong Kong & Shanghai, China;
Singapore;
Sydney, Australia;
Tokyo & Osaka, Japan
Shanghai, China;
Tokyo, Japan;
Adelaide, Brisbane, Canberra, Melbourne, Perth & Sydney, Australia
(1)
Owned sites include IBX data centers subject to long-term ground leases.
The following table presents an overview of our portfolio of IBX data centers as of December 31, 2016 (in thousands)2018 (1):
# of IBXs 
Total Cabinet Capacity (1)
 Cabinets Billed 
Cabinet Utilization % (2)
 
MRR per Cabinet (3)
# of IBXs 
Total Cabinet Capacity (2)
 Cabinets Billed 
Cabinet Utilization % (3)
 
MRR per Cabinet (4)
Americas55
 65,100
 53,500
 82% $2,512
87
 105,900
 81,800
 77% $2,389
EMEA64
 92,700
 74,600
 80% 1,408
73
 113,500
 94,700
 83% 1,352
Asia-Pacific27
 39,800
 29,300
 74% 1,963
40
 57,300
 47,500
 83% 1,762
Total146
 197,600
 157,400
    200
 276,700
 224,000
    
_________________________
(1)
Non-financial metrics presented on the table above include Zenium data center, Itconic, and Metronode acquisitions.
(2)
Cabinets represent a specific amount of space within an IBX data center. Customers can combine and use multiple adjacent cabinets within an IBX data center, depending on their space requirements.
(2)
(3)
The cabinet utilization rate represents the percentage of cabinet space billing versus total cabinet capacity, taking into consideration power limitations.
(3)
(4)
MRR per cabinet represents average monthly recurring revenue recognized during the year divided by the average number of cabinets billing during the fourth quarter of the year. Brazil, Telecity,Colombia, Infomart Dallas non-IBX tenant income and Bit-isle and the impact of Asia-Pacific embedded derivativesMIS are excluded from MRR per cabinet calculation. calculations.


The following table presents a summary of our significant IBX data center expansion projects under construction as of December 31, 2016:2018:
Property Property Location Target Open Date Sellable Cabinets 
Total Capex
(in Millions)
Americas:        
SP3 phase I Sao Paulo Q1 2017 725
 $69
SV10 phase I San Jose Q2 2017 795
 125
NY5 phase II New York Q2 2017 1,200
 76
DC12 phase I Ashburn Q3 2017 1,275
 99
DA6 phase II Dallas Q3 2017 430
 29
RJ2 phase III Rio De Janeiro Q3 2017 315
 22
TR2 phase III Toronto Q3 2017 740
 21
CH3 phase IV Chicago Q2 2018 550
 63
      6,030
 504
EMEA:        
DB3 phase VI Dublin Q2 2017 500
 8
DX1 phase II Dubai Q2 2017 625
 31
ZH5 phase II Zurich Q2 2017 280
 18
FR6 phase I Frankfurt Q2 2017 1,325
 92
PA4 phase III Paris Q2 2017 960
 47
HE6 phase III Helsinki Q2 2017 190
 15
AM6 phase II Amsterdam Q3 2017 1,950
 37
FR2 phase V (B) Frankfurt Q3 2017 1,295
 46
AM4 phase I Amsterdam Q3 2017 1,555
 113
FR5 phase III Frankfurt Q2 2018 546
 13
      9,226
 420
Asia-Pacific:        
HK2 phase IV Hong Kong Q1 2017 900
 39
HK1 phase X/XI Hong Kong Q1 2017 515
 16
SG2 phase VIII Singapore Q2 2017 1,400
 49
      2,815
 104
Total     18,071
 $1,028
Property Property Location Target Open Date Sellable Cabinets 
Total Capex
(in Millions)(1)
Americas:        
DA6 phase III Dallas Q1 2019 425
 $23
CH3 phase V Chicago Q2 2019 450
 15
SE4 phase II Seattle Q2 2019 575
 30
NY5 phase III New York Q3 2019 1,100
 33
SP4 phase III São Paulo Q2 2020 1,025
 59
DA11 phase I Dallas Q2 2020 1,975
 138
      5,550
 298
EMEA:        
FR2 phase VI-A Frankfurt Q1 2019 1,250
 103
LD4 phase II London Q1 2019 1,075
 39
LD9 phase V London Q1 2019 1,550
 72
PA8 phase I (2)
 Paris Q1 2019 875
 73
SO2 phase I Sofia Q1 2019 350
 19
ZH5 phase III Zurich Q1 2019 525
 51
FR5 phase IV Frankfurt Q2 2019 350
 25
HE7 phase I Helsinki Q2 2019 250
 20
LD7 phase I London Q2 2019 1,775
 120
MD2 phase II Madrid Q2 2019 300
 15
WA3 phase I Warsaw Q2 2019 475
 34
SK2 phase VI Stockholm Q2 2019 540
 35
FR2 phase VI-B Frankfurt Q3 2019 2,200
 67
LD9 phase VI London Q3 2019 900
 48
LD10 phase III London Q3 2019 1,375
 45
ZH5 phase IV Zurich Q3 2019 475
 25
HH1 phase I Hamburg Q4 2019 375
 27
MC1 phase I Muscat Q4 2019 250
 22
PA8 phase II (2)
 Paris Q4 2019 1,300
 54
      16,190
 894
Asia-Pacific:        
SH6 phase I Shanghai Q1 2019 400
 31
TY11 phase I Tokyo Q2 2019 950
 70
HK2 phase V Hong Kong Q2 2019 1,000
 43
OS1 phase V Osaka Q2 2019 475
 15
PE2 phase II Perth Q2 2019 225
 11
HK4 phase II Hong Kong Q3 2019 500
 34
ME2 phase I Melbourne Q3 2019 1,000
 84
SL1 phase I Seoul Q3 2019 550
 5
SY5 phase I Sydney Q3 2019 1,825
 160
SG4 phase I Singapore Q4 2019 1,400
 85
HK1 phase XII Hong Kong Q1 2020 250
 13
TY12 phase I (2)
 Tokyo Q4 2020 950
 147
      9,525
 698
Total     31,265
 $1,890

(1)
Capital expenditures are approximate and may change based on final construction details.
(2)
Dedicated hyperscale data centers
ITEM 3.    LEGAL PROCEEDINGS
ITEM 3.LEGAL PROCEEDINGS
None.
ITEM 4.    MINE SAFETY DISCLOSURE
ITEM 4.MINE SAFETY DISCLOSURE
Not applicable.

PART II
ITEM 5.MARKET FOR REGISTRANT’SREGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES
Our common stock is quoted on the NASDAQ Global Select Market under the symbol of “EQIX.”"EQIX." Our common stock began trading in August 2000. The following table sets forth on a per share basis the low and high closing prices of our common stock as reported by the NASDAQ Global Select Market during the last two years.
 Low High
Fiscal 2016   
Fourth Fiscal Quarter$325.05
 $373.22
Third Fiscal Quarter355.01
 389.45
Second Fiscal Quarter319.89
 387.73
First Fiscal Quarter265.05
 330.71
 Low High
Fiscal 2015   
Fourth Fiscal Quarter$265.41
 $304.98
Third Fiscal Quarter251.11
 292.02
Second Fiscal Quarter233.59
 270.15
First Fiscal Quarter216.86
 238.95
As of January 31, 2017,2019, we had 71,441,52780,761,276 shares of our common stock outstanding held by approximately 300278 registered holders. During the yearyears ended December 31, 2016,2018 and 2017, we did not issue or sell any securities on an unregistered basis.
Dividends and Special Distributions
On each of February 18, May 4, August 3 and November 2, 2016, our Board of Directors declared a quarterly cash dividend of $1.75 per share. We expect to continue to pay regular cash dividends in order to satisfy the required REIT tests to remain qualified for taxation as a REIT for US federal income tax purposes. For additional information, see “Dividends” in Note 12 of our Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.
In September 2015, our Board of Directors declared a special distribution of $627.0 million, or approximately $10.95 per share (the “2015 Special Distribution”), to our common stockholders. The 2015 Special Distribution was paid on November 10, 2015 to our common stockholders of record as of the close of business on October 8, 2015. Common stockholders had the option to elect to receive payment of the 2015 Special Distribution in the form of stock or cash, with the total cash payment to all stockholders limited to no more than 20% of the total distribution. The number of shares distributed was determined based upon common stockholder elections and the average closing price of our common stock on the three trading days commencing on November 3, 2015 or $297.03 per share. As such, we issued 1.7 million shares of our common stock and paid $125.5 million in connection with the 2015 Special Distribution.
In connection with our conversion to a REIT effective January 1, 2015, we began paying quarterly dividends in 2015. On each of February 19, May 7, July 29, and October 28, 2015, our Board of Directors declared a quarterly cash dividend of $1.69 per share.
In October 2014, our Board of Directors declared a special distribution of $416.0 million, or approximately $7.57 per share (the “2014 Special Distribution”), to our common stockholders in connection with our plan to convert to a REIT. The 2014 Special Distribution was paid on November 25, 2014 to our common stockholders of record as of the close of business on October 27, 2014. Common stockholders had the option to elect to receive payment of the 2014 Special Distribution in the form of stock or cash, with the total cash payment to all stockholders limited to no more than 20% of the total distribution. The number of shares distributed was determined based upon common stockholder elections and the average closing price of our common stock on the three trading days commencing on November 18, 2014 or $224.45 per share. As such, we issued 1.5 million shares of our common stock and paid $83.3 million in connection with the 2014 Special Distribution.

Tax Treatment of Distributions
For Federal income tax purposes, distributions to stockholders are treated as ordinary income, capital gains, return of capital or a combination thereof. For the years ended December 31, 2016 and 2015, the dividends and special distributions we paid were classified as follows:
Record Date Payment Date Total Distribution Nonqualified Ordinary Dividend Qualified Ordinary Dividend Return of Capital
    (per share)
Fiscal 2016          
3/9/2016 3/23/2016 $1.750000
 $1.231334
 $0.518666
 $
5/25/2016 6/15/2016 1.750000
 1.231334
 0.518666
 
8/24/2016 9/14/2016 1.750000
 1.231334
 0.518666
 
11/16/2016 12/14/2016 1.750000
 1.231334
 0.518666
 
Total   $7.000000
 $4.925336
 $2.074664
 $
           
Fiscal 2015          
3/11/2015 3/25/2015 $1.690000
 $0.978733
 $0.711267
 $
5/27/2015 6/17/2015 1.690000
 0.978733
 0.711267
 
8/26/2015 9/16/2015 1.690000
 0.978733
 0.711267
 
10/8/2015 11/10/2015 10.945146
 6.338687
 4.606459
 
12/9/2015 12/16/2015 1.690000
 0.978733
 0.711267
 
Total   $17.705146
 $10.253619
 $7.451527
 $
Stock Performance Graph
The graph set forth below compares the cumulative total stockholder return on Equinix’sEquinix's common stock between December 31, 20112013 and December 31, 20162018 with the cumulative total return of (i) the S&P 500 Index, (ii) the NASDAQ Composite Index and (iii) the FTSE NAREIT All REITs Index. The graph assumes the investment of $100.00 on December 31, 20112013 in Equinix’sEquinix's common stock and in each index, and assumes the reinvestment of dividends, if any.
Equinix cautions that the stock price performance shown in the graph below is not indicative of, nor intended to forecast, the potential future performance of Equinix’sEquinix's common stock.
Notwithstanding anything to the contrary set forth in any of Equinix’sEquinix's previous or future filings under the Securities Act of 1933, as amended, or Securities Exchange Act of 1934, as amended, that might incorporate this Annual Report on Form 10-K or future filings made by Equinix under those statutes, the stock performance graph shall not be deemed filed with the Securities and Exchange Commission and shall not be deemed incorporated by reference into any of those prior filings or into any future filings made by Equinix under those statutes.

COMPARISON OF 5 YEAR CUMULATIVE TOTAL RETURN*
chart-959d4c39ae735fefae9.jpg
*$100 invested on 12/31/1113 in stock or index, including reinvestment of dividends.
Fiscal year ending December 31.

ITEM 6.    SELECTED FINANCIAL DATA
ITEM 6.SELECTED FINANCIAL DATA
The following consolidated statement of operations data for the five years ended December 31, 20162018 and the consolidated balance sheet data as of December 31, 2018, 2017, 2016, 2015 2014, 2013 and 20122014 have been derived from our audited consolidated financial statements and the related notes. Our historical results are not necessarily indicative of the results to be expected for future periods. The following selected consolidated financial data for the five years ended December 31, 20162018 and as of December 31, 2018, 2017, 2016, 2015 2014, 2013 and 2012,2014, should be read in conjunction with our audited consolidated financial statements and the related notes in Item 8 of this Annual Report on Form 10-K and “Management’s"Management's Discussion and Analysis of Financial Condition and Results of Operations”Operations" in Item 7 of this Annual Report on Form 10-K. We completed acquisitions of Metronode and Infomart Dallas in April, 2018, the Zenium data center business in Istanbul and Itconic in October 2017, certain colocation business from Verizon in May 2017, IO UK's data center operating business in Slough, United Kingdom in February 2017 (the "IO Acquisition), certain Paris IBX data centers in August 2016 (the "Paris IBX Data Center Acquisition"), Telecity Group plc in January 2016, Bit-isle Inc. in November 2015 and Nimbo Technologies Inc. ("Nimbo") in January 2015. We also completed the acquisition of the 100% controlling equity interest in ALOG Data Centers do Brasil S.A. (“ALOG”("ALOG") in July 2014. In addition, we acquired Frankfurt Kleyer 90 carrier hotel in October 2013, a Dubai IBX data center in November 2012, and Asia Tone Limited and ancotel GmbH in July 2012. We also sold solar power assets of Bit-isle in November 2016 8and eight of our IBX data centers located in the U.K., the Netherlands and Germany in July 2016 and 16 of our IBX data centers located throughout the U.S. in November 2012.2016. For further information on our acquisitions and divestitures during the three years ended December 31, 2016,2018, refer to Note 2,3, Note 45 and Note 56 of our Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.

Years Ended December 31,Years Ended December 31,
2016 2015 2014 2013 20122018 2017 2016 2015 2014
(dollars in thousands, except per share data)(dollars in thousands, except per share data)
Revenues(1)$3,611,989
 $2,725,867
 $2,443,776
 $2,152,766
 $1,887,376
$5,071,654
 $4,368,428
 $3,611,989
 $2,725,867
 $2,443,776
Costs and operating expenses:                  
Cost of revenues1,820,870
 1,291,506
 1,197,885
 1,064,403
 944,617
2,605,475
 2,193,149
 1,820,870
 1,291,506
 1,197,885
Sales and marketing(1)438,742
 332,012
 296,103
 246,623
 202,914
633,702
 581,724
 438,742
 332,012
 296,103
General and administrative694,561
 493,284
 438,016
 374,790
 328,266
826,694
 745,906
 694,561
 493,284
 438,016
Restructuring reversals
 
 
 (4,837) 
Acquisition costs34,413
 38,635
 64,195
 41,723
 2,506
Impairment charges7,698
 
 
 
 9,861

 
 7,698
 
 
Acquisition costs64,195
 41,723
 2,506
 10,855
 8,822
Gain on asset sales(32,816) 
 
 
 
(6,013) 
 (32,816) 
 
Total costs and operating expenses2,993,250
 2,158,525
 1,934,510
 1,691,834
 1,494,480
4,094,271
 3,559,414
 2,993,250
 2,158,525
 1,934,510
Income from operations618,739
 567,342
 509,266
 460,932
 392,896
977,383
 809,014
 618,739
 567,342
 509,266
Interest income3,476
 3,581
 2,891
 3,387
 3,466
14,482
 13,075
 3,476
 3,581
 2,891
Interest expense(392,156) (299,055) (270,553) (248,792) (200,328)(521,494) (478,698) (392,156) (299,055) (270,553)
Other income (expense)(57,924) (60,581) 119
 5,253
 (2,208)14,044
 9,213
 (57,924) (60,581) 119
Loss on debt extinguishment(12,276) (289) (156,990) (108,501) (5,204)(51,377) (65,772) (12,276) (289) (156,990)
Income from continuing operations before income taxes159,859
 210,998
 84,733
 112,279
 188,622
433,038
 286,832
 159,859
 210,998
 84,733
Income tax expense (1)
(45,451) (23,224) (345,459) (16,156) (58,564)
Income tax expense (2)
(67,679) (53,850) (45,451) (23,224) (345,459)
Net income (loss) from continuing operations114,408
 187,774
 (260,726) 96,123
 130,058
365,359
 232,982
 114,408
 187,774
 (260,726)
Net income from discontinued operations, net of tax12,392
 
 
 
 13,086

 
 12,392
 
 
Net income (loss)126,800
 187,774
 (260,726) 96,123
 143,144
365,359
 232,982
 126,800
 187,774
 (260,726)
Net (income) loss attributable to non-controlling interest
 
 1,179
 (1,438) (3,116)
Net loss attributable to non-controlling interest
 
 
 
 1,179
Net income (loss) attributable to Equinix$126,800
 $187,774
 $(259,547) $94,685
 $140,028
$365,359
 $232,982
 $126,800
 $187,774
 $(259,547)
                  
Earnings per share ("EPS") attributable to Equinix:                  
Basic EPS from continuing operations$1.63
 $3.25
 $(4.96) $1.92
 $2.65
$4.58
 $3.03
 $1.63
 $3.25
 $(4.96)
Basic EPS from discontinued operations0.18
 
 
 
 0.27

 
 0.18
 
 
Basic EPS$1.81
 $3.25
 $(4.96) $1.92
 $2.92
$4.58
 $3.03
 $1.81
 $3.25
 $(4.96)
Weighted-average shares70,117
 57,790
 52,359
 49,438
 48,004
79,779
 76,854
 70,117
 57,790
 52,359
Diluted EPS from continuing operations$1.62
 $3.21
 $(4.96) $1.89
 $2.58
$4.56
 $3.00
 $1.62
 $3.21
 $(4.96)
Diluted EPS from discontinued operations0.17
 
 
 
 0.25

 
 0.17
 
 
Diluted EPS$1.79
 $3.21
 $(4.96) $1.89
 $2.83
$4.56
 $3.00
 $1.79
 $3.21
 $(4.96)
Weighted-average shares70,816
 58,483
 52,359
 50,116
 51,816
80,197
 77,535
 70,816
 58,483
 52,359
Dividends per share (2)
$7.00
 $17.71
 $7.57
 $
 $
Dividends per share (3)
$9.12
 $8.00
 $7.00
 $17.71
 $7.57
_______________________

(1)
On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. The increase in income tax expenseimpacts are primarily related to the costs to obtain a customer contract and from the recognition of installation revenue, which are recognized over the contract period, rather than over the estimated installation life as under the prior revenue standard. The consolidated statement of operations for the year ended December 31, 20132018 reflected the adoption of Topic 606. See Note 1 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.
(2)
The higher income tax expense for the year ended December 31, 2014 was primarily attributed to the de-recognition of $324.1 million of net deferred tax assets and deferred tax liabilities in December 2014, when our Board of Directors formally approved our conversion to a REIT and we reassessed the deferred tax assets and deferred tax liabilities of our U.S. operations included in the REIT structure.
(2)
(3)
During the years endingyear ended December 31, 2015, and 2014, the dividendswe paid $10.95 per share includes common stock dividends of $8.76special distribution and $6.06$6.76 per share respectively.of quarterly cash dividend. During the year ended December 31, 2014, we paid $7.57 per share of special distribution.


 Years Ended December 31,
 2016 2015 2014 2013 2012
Other Financial Data: (1)
(in thousands)
Net cash provided by operating activities$1,016,580
 $894,793
 $689,420
 $604,608
 $632,026
Net cash used in investing activities(1,592,155) (1,134,927) (435,839) (1,169,313) (442,873)
Net cash provided by (used in) financing activities(894,292) 1,873,182
 107,401
 574,907
 (222,721)
 As of December 31,
 2018 2017 2016 2015 2014
Consolidated Balance Sheet Data:(in thousands)
Cash, cash equivalents and short-term and long-term investments$610,706
 $1,450,031
 $761,927
 $2,246,297
 $1,140,751
Accounts receivable, net630,119
 576,313
 396,245
 291,964
 262,570
Property, plant and equipment, net11,026,020
 9,394,602
 7,199,210
 5,606,436
 4,998,270
Total assets (1) (2)
20,244,638
 18,691,457
 12,608,371
 10,356,695
 7,781,978
Capital lease and other financing obligations, less current portion1,441,077
 1,620,256
 1,410,742
 1,287,139
 1,168,042
Mortgage and loans payable, less current portion (1)
1,310,663
 1,393,118
 1,369,087
 472,769
 532,809
Senior notes, less current portion (1)
8,128,785
 6,923,849
 3,810,770
 3,804,634
 2,717,046
Convertible debt, less current portion (1)

 
 
 
 145,229
Total stockholders' equity (2)
7,219,279
 6,849,790
 4,365,829
 2,745,386
 2,270,131
_________________________
(1)
For a discussion of our primary non-GAAP financial metrics, see our non-GAAP financial measures discussion in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Item 7 of this Annual Report on Form 10-K.
 As of December 31,
 2016 2015 2014 2013 2012
Consolidated Balance Sheet Data:(in thousands)
Cash, cash equivalents and short-term and long-term investments$761,927
 $2,246,297
 $1,140,751
 $1,030,092
 $546,524
Accounts receivable, net396,245
 291,964
 262,570
 184,840
 163,840
Property, plant and equipment, net7,199,210
 5,606,436
 4,998,270
 4,591,650
 3,915,738
Total assets (1)
12,608,371
 10,356,695
 7,781,978
 7,457,039
 6,105,507
Capital lease and other financing obligations, excluding current portion1,410,742
 1,287,139
 1,168,042
 914,032
 545,853
Mortgage and loans payable, excluding current portion (1)
1,369,087
 472,769
 532,809
 197,172
 186,287
Senior notes (1)
3,810,770
 3,804,634
 2,717,046
 2,220,911
 1,478,482
Convertible debt, excluding current portion (1)

 
 145,229
 720,499
 702,469
Redeemable non-controlling interests
 
 
 123,902
 84,178
Total stockholders' equity4,365,829
 2,745,386
 2,270,131
 2,459,064
 2,313,441
_________________________
(1)The company adopted ASU 2015-03 during the year ended December 31, 2015. As a result, debt issuance costs of $35,455, $35,320 and $30,290$35.5 million were reclassified from other assets to debt as of December 31, 2014, 20132014.
(2)
On January 1, 2018, we adopted Topic 606 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. We recorded a net increase to opening retained earnings of $269.8 million as of January 1, 2018 due to the cumulative impact of adopting Topic 606, with the impact primarily related to the costs to obtain a customer contract and 2012, respectively.from the recognition of installation revenue, which are recognized over the contract period, rather than over the estimated installation life as under the prior revenue standard. See Note 1 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.

ITEM 7.MANAGEMENT’SMANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
The following commentary should be read in conjunction with the financial statements and related notes contained elsewhere in this Annual Report on Form 10-K. The information in this discussion contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such statements are based upon current expectations that involve risks and uncertainties. Any statements contained herein that are not statements of historical fact may be deemed to be forward-looking statements. For example, the words “believes,” “anticipates,” “plans,” “expects,” “intends”"believes," "anticipates," "plans," "expects," "intends" and similar expressions are intended to identify forward-looking statements. Our actual results and the timing of certain events may differ significantly from the results discussed in the forward-looking statements. Factors that might cause such a discrepancy include, but are not limited to, those discussed in “Liquidity"Liquidity and Capital Resources”Resources" and “Risk Factors”"Risk Factors" elsewhere in this Annual Report on Form 10-K. All forward-looking statements in this document are based on information available to us as of the date hereof and we assume no obligation to update any such forward-looking statements.
Our management’smanagement's discussion and analysis of financial condition and results of operations is intended to assist readers in understanding our financial information from our management’smanagement's perspective and is presented as follows:
Overview
Results of Operations
Non-GAAP Financial Measures
Liquidity and Capital Resources
Contractual Obligations and Off-Balance-Sheet Arrangements
Critical Accounting Policies and Estimates
Recent Accounting Pronouncements
In December 2016,2018, as more fully described in Note 212 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we sold 930,934 shares of our common stock for approximately $388.2 million, net of payment of commissions to the sales agents and estimated equity offering costs under our ATM program launched in 2017 (the "2017 ATM Program"). As of December 31, 2018, no shares remained available for sale under the 2017 ATM Program. In December 2018, we launched another ATM program, under which we may offer and sell from time to time up to an aggregate of $750.0 million of our common stock in "at the market" transactions (the "2018 ATM Program"). As of December 31, 2018, no sales have been made under the 2018 ATM Program.
In July 2018, as more fully described in Note 11 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we entered into a transactionan amendment to our existing credit agreement with Verizon Communications Inc. ("Verizon") to acquire Verizon's colocation services business at 24 data center sites, consisting of 29 data center buildings, located in the United States, Brazil and Colombia, for a cash purchase price of $3.6 billion (the "Verizon Asset Purchase"). The acquisition is expected to close by mid-2017. We expect to fund the acquisition with a combination of cash on hand and proceeds of debt and equity financings.
In connection with the Verizon Asset Purchase, we entered into a commitment letter, dated December 6, 2016, with JPMorgan Chase Bank, N.A., Bank of America, N.A. and Merrill Lynch, Pierce, Fenner & Smith Incorporated (the "Commitment Parties"), pursuant to which the Commitment Parties have committed to provideadd a senior unsecured bridge facilityterm loan in an aggregate principal amount of up to $2.0¥47.5 billion for(the "JPY Term Loan"). Concurrent with the purposesclosing of funding (i) a portionour JPY Term Loan, we drew down the full ¥47.5 billion of the cash consideration forJPY Term Loan, or approximately $424.7 million, and prepaid the acquisition and (ii)remaining principal of our existing Japanese Yen Term Loan of ¥43.8 billion, or approximately $391.3 million. We recognized a loss on debt extinguishment of $2.2 million during the fees and expenses incurredthird quarter of 2018 in connection with the acquisition. The full amount must be drawn in a single drawing. The initial maturity date is 12 months from the date of the drawdown and, at the initial maturity date (if not repaid prior to that time), the facility will convert into a seven-year senior unsecured term loan. As of December 31, 2016, we had not drawn against the bridge facility.therewith.
In December 2016,April 2018, as more fully described in Note 103 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we entered into a third amendment (the "Third Amendment") to the credit agreement we entered into on December 17, 2014 with a group of lenders for a $1.5 billion credit facility (the "Senior Credit Facility"). Pursuant to the Third Amendment, (i) we could borrow up to €1.0 billion in additional term B loan drawings (the "Term B-2 Loan"), (ii) the interest rate margin applicable to the existing Term Loan B (the "Term Loan B-1 Facility") in US Dollars was reduced from 3.25% to 2.50% and the LIBOR floor applicable to such loan was reduced from 0.75% to zero and (iii) the interest rate margin applicable to the loans borrowed under the Term Loan B-1 Facility in Pounds Sterling was reduced from 3.75% to 3.00%, with no change to the existing LIBOR floor of 0.75% applicable to such loan. In January 2017, we borrowed the full amount of the €1.0 billion Term B-2 Loan. The Term B-2 Loan bears interest at an index rate based on EURIBOR plus a margin of 3.25%. No original issue discount is applicable to the Term B-2 Loan. The Term B-2 Loan must be repaid in equal quarterly installments of 0.25% of the original principal amount of the Term B-2 Loan, starting in the second quarter of 2017, with the remaining amount outstanding to be repaid in full on the seventh anniversary of the funding date of the Term B-2 Loan.
In June 2016, as more fully described in Note 4 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we approved the divestiture of the solar power assets of Bit-isle. During the quarter ended September 30, 2016, we evaluated the recoverability of the carrying value of the assets held for sale associated with Terra Power Co., Ltd., and recorded an impairment charge on other current assets of $7.7 million, reducing the carrying value of such assets from $79.5 million to the estimated fair value of $71.8 million. In October 2016, we entered into a Share Transfer Agreement for the transfer of common stock of Terra Power Co., Ltd., relating to the divestiture of the solar power assets of Bit-isle. We received ¥400.0 million, or

approximately $3.8 million at the exchange rate in effect on October 31, 2016, and by November 30, 2016, we had received an additional ¥2.5 billion, or approximately $22.1 million at the exchange rate in effect at the time of cash receipt. In addition, we expect to receive the remaining payment of ¥5.3 billion in the first quarter of 2017, or approximately $45.5 million at the exchange rate in effect on December 31, 2016. The associated loss on the sale was insignificant.
In September 2016, as more fully described in Note 10 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we entered into a five year term loan agreement (the "Japanese Yen Term Loan") with the Bank of Tokyo-Mitsubishi UFJ, LTd. ("BTMU") for ¥47.5 billion or approximately $468.4 million in U.S. dollars at the exchange rate in effect as of September 30, 2016. In September 2015, in connection with our acquisition of Bit-isle, we entered into a term loan agreement (the "Bridge Term Loan Agreement") with BTMU. BTMU was committed to provide a senior bridge loan facility (the "Bridge Term Loan") in the amount of up to ¥47.5 billion or approximately $468.4 million in U.S. dollars at the exchange rate in effect as of September 30, 2016. In October 2016, we borrowed the full amount of the ¥47.5 billion under the Japanese Yen Term Loan and repaid the Bridge Term Loan for a principal amount of ¥47.5 billion or approximately $453.2 million at the exchange rate in effect on October 31, 2016.
In April and June 2016, as more fully described in Note 10 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, holders of our 4.75% convertible subordinated notes converted or redeemed a total of $150.1 million of the principal amount of the notes for 2.0 million shares of our common stock and $3.6 million in cash, comprised of accrued interest, cash paid in lieu of fractional shares and principal redemption. Upon maturity of our 4.75% convertible subordinated notes on June 15, 2016, we settled the related capped call transaction and received 380,779 shares of common stock, which was placed in treasury and resulted in a credit of $141.7 million to additional paid in capital based on the market price of $372.10 on June 15, 2016.
In January 2016, as more fully described in Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we completed ourthe acquisition of Telecity Group plc ("TelecityGroup")Metronode for a totalcash purchase price of approximately $1.6A$1.034 billion in cash and 6.9 million shares of our common stock valued at approximately $2.1 billion, for a total of $3.7 billion. In January 2016, we terminated our bridge credit agreement for £875.0 million, or approximately $1.3 billion, related to$804.6 million at the TelecityGroup acquisition.exchange rate in effect on April 18, 2018 (the "Metronode Acquisition"). We accounted for this transaction as a business combination using the acquisition method of accounting. The valuation and purchase accounting of this acquisition have not yet been finalized as of December 31, 2018.
In January 2016,April 2018, as more fully described in Notes 4 and 5Note 3 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we agreed to divest eight data centers and related assets, including our London 2 data center ("LD2") in London, United Kingdom and seven data centers of TelecityGroup in order to obtain the approval of the European Commission forcompleted the acquisition of TelecityGroup. The results of operationsInfomart Dallas for the seven TelecityGroup data centers were classified as net income from discontinued operations, net of tax, from January 15, 2016, the date of the acquisition, through July 5, 2016 in our consolidated statement of operations. In July 2016, we completed the sale of these data centers and related assets to Digital Realty Trust, Inc. ("Digital Realty") for approximately $827.3 million at the exchange rate in effect on July 5, 2016. On August 1, 2016, we purchased Digital Realty’s operating business, including its real estate and facility, in St. Denis, Paris, where we already had an established presence with two IBX data centers, for total cash consideration of approximately €193.8$804.0 million or(the "Infomart Dallas Acquisition"), consisting of approximately $216.4$45.8 million atin cash, subject to customary adjustments, and $758.2 million aggregate fair value of 5.000% senior unsecured notes. We accounted for this transaction as a business combination using the exchange rate in effect on August 1, 2016 (the "Paris IBX Data Center Acquisition").acquisition method of accounting. The valuation and purchase accounting of this acquisition have not yet been finalized as of December 31, 2018.
In January 2016,March 2018, as more fully described in Note 1011 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we borrowed the full amount of the $250.0 million and £300.0issued €750.0 million, or approximately $438.2$929.9 million in U.S. dollars, at the exchange rate in effect on January 8, 2016 ("Term Loan B"), made availableMarch 14, 2018, aggregate principal amount of 2.875% senior notes due March 15, 2024. We incurred debt issuance costs of $11.6 million related to us under the second amendment to our2.875% Euro Senior Credit Facility to fund the TelecityGroup acquisition.Notes due 2024.


Overview
Equinix provides global data center offerings that protect and connect the world’sworld's most valued information assets. Global enterprises, financial services companies and content and network service providers rely upon Equinix’sEquinix's leading insight and data centers in 41 markets around the world for the safekeepingsafehousing of their critical IT equipment and the ability to directly connect to the networks that enable today’stoday's information-driven economy. The acquisitions of Infomart Dallas and Metronode expanded our total global footprint to 200 IBX data centers across 52 markets around the world. Equinix offers the following solutions: (i) premium data center colocation, (ii) interconnection and (iii) exchange and (iii) outsourced IT infrastructure services.solutions. As of December 31, 2016,2018, we operated or had partner IBX data centers in Brazil, Canada, Colombia and throughout the Atlanta, Boston, Chicago, Dallas, Denver, Los Angeles, Miami, New York, Philadelphia, Rio de Janeiro, Sao Paulo, Seattle, Silicon Valley, Toronto and Washington, D.C. metro areasU.S. in the Americas region; Bulgaria, Finland, France, Germany, Ireland, Italy, the Netherlands, Poland, Portugal, Spain, Sweden, Switzerland, Turkey, the United Arab Emirates and the United Kingdom in the Europe, Middle East and Africa (“EMEA”)EMEA region; and Australia, China, Hong Kong, Indonesia, Japan and Singapore in the Asia-Pacific region.


 Our data centers in 4152 markets around the world are a global platform, which allows our customers to increase information and application delivery performance while significantly reducing costs. This global platform and the quality of our IBX data centers have enabled us to establish a critical mass of customers. As more customers choose our IBX data centers, it benefits their suppliers and business partners to colocate with us as well, in order to gain the full economic and performance benefits of our offerings. These partners, in turn, pull in their business partners, creating a “marketplace”"marketplace" for their services. Our global platform enables scalable, reliable and cost-effective colocation, interconnection and traffic exchange that lowers overall cost and increases flexibility. Our focused business model is built on our critical mass of customers and the resulting “marketplace”"marketplace" effect. This global platform, combined with our strong financial position, continues to drive new customer growth and bookings.

Historically, our market has been served by large telecommunications carriers who have bundled telecommunications products and services with their colocation offerings. The data center market landscape has evolved to include cloud computing/utility providers, application hosting providers and systems integrators, managed infrastructure hosting providers and colocation providers. More than 350 companies provide data center solutions in the U.S. alone. Each of these data center solutions providers can bundle various colocation, interconnection and network offerings and outsourced IT infrastructure services.solutions. We are able to offer our customers a global platform that reaches 2124 countries with proven operational reliability, improved application performance, and network choice and a highly scalable set of offerings.
Our utilization rate represents the percentage of our cabinet space billing versus net sellable cabinet space available, taking into account power limitations. Our utilization rate wasrates were approximately 81%, as of December 31, 20162018, and 80%, excluding the Verizon Data Center, Paris IBX Data Center, Itconic, Zenium data center and IO acquisitions, as of December 31, 2015. However, excluding2017. Excluding the impact of IBX data center expansion projects that have opened during the last 12 months, our utilization rate would behave increased to approximately 84%83% as of December 31, 2016.2018. Our cabinet utilization rate varies from market to market among our IBX data centers across the Americas, EMEA and Asia-Pacific regions. We continue to monitor the available capacity in each of our selected markets. To the extent we have limited capacity available in a given market, it may limit our ability for growth in that market. We perform demand studies on an ongoing basis to determine if future expansion is warranted in a market. In addition, power and cooling requirements for most customers are growing on a per unit basis. As a result, customers are consuming an increasing amount of power per cabinet. Although we generally do not control the amount of power our customers draw from installed circuits, we have negotiated power consumption limitations with certain high power-demand customers. This increased power consumption has driven us to build out our new IBX data centers to support power and cooling needs twice that of previous IBX data centers. We could face power limitations in our IBX data centers, even though we may have additional physical cabinet capacity available within a specific IBX data center. This could have a negative impact on the available utilization capacity of a given IBX data center, which could have a negative impact on our ability to grow revenues, affecting our financial performance, operating results and cash flows.
Strategically, we will continue to look at attractive opportunities to grow our market share and selectively improve our footprint and offerings. As was the case with our recent expansions and acquisitions, our expansion criteria will be dependent on a number of factors, such asincluding but not limited to demand from new and existing customers, quality of the design, power capacity, access to networks, capacity availability in the current market location, amount of incremental investment required by us in the targeted property, lead-time to break even on a free cash flow basis and in-place customers. Like our recent expansions and acquisitions, the right combination of these factors may be attractive to us. Depending on the circumstances, these transactions may require additional capital expenditures funded by upfront cash payments or through long-term financing arrangements in order to bring these properties up to Equinix standards. Property expansion may be in the form of purchases of real property, long-term leasing arrangements or acquisitions. Future purchases, construction or acquisitions may be completed by us or with partners or potential customers to minimize the outlay of cash, which can be significant.

Our business is based on a recurring revenue model comprised of colocation and related interconnection and managed infrastructure offerings. We consider these offerings recurring because our customers are generally billed on a fixed and recurring basis each month for the duration of their contract, which is generally one to three years in length. Our recurring revenues have comprised more than 90% of our total revenues during the past three years. In addition, during any given quarter of the past three years, more than half of our monthly recurring revenue bookings came from existing customers, contributing to our revenue growth. Our largest customer accounted for approximately 3% of our recurring revenues for the periodsyears ended December 31, 20162018, 2017 and 2015 and 2% of our recurring revenues for the period ended December 31, 2014.2016. Our 50 largest customers accounted for approximately 36%38%, 34%37% and 36%, respectively, of our recurring revenues for the years ended December 31, 2016, 20152018, 2017 and 2014.2016.
Our non-recurring revenues are primarily comprised of installation services related to a customer’scustomer's initial deployment and professional services that we perform. These services are considered to be non-recurring because they are billed typically once, upon completion of the installation or the professional services work performed. The majority of these non-recurring revenues are typically billed on the first invoice distributed to the customer in connection with their initial installation. However, revenues from installation services are deferred and recognized ratably over the expected lifeperiod of the customer installation.contract term. Additionally, revenue from contract settlements, when a customer wishes to terminate their contract early, is generally treated as a contract modification and recognized when noratably over the remaining performance

obligations exist and collectability is reasonably assured, toterm of the extent that the revenue has not previously been recognized.contract, if any. As a percentage of total revenues, we expect non-recurring revenues to represent less than 10% of total revenues for the foreseeable future.
Our Americas revenues are derived primarily from colocation and related interconnection offerings, and our EMEA and Asia-Pacific revenues are derived primarily from colocation and managed infrastructure offerings.
The largest components of our cost of revenues are depreciation, rental payments related to our leased IBX data centers, utility costs, including electricity, and bandwidth access, IBX data center employees’employees' salaries and benefits, including stock-based compensation, repairs and maintenance, supplies and equipment and security services. A majority of our cost of revenues is fixed in nature and should not vary significantly from period to period, unless we expand our existing IBX data centers or open or acquire new IBX data centers. However, there are certain costs that are considered more variable in nature, including utilities and supplies that are directly related to growth in our existing and new customer base. We expect the cost of our utilities, specifically electricity, will generally increase in the future on a per-unit or fixed basis, in addition to the variable increase related to the growth in consumption by our customers. In addition, the cost of electricity is generally higher in the summer months, as compared to other times of the year. To the extent we incur increased utility costs, such increased costs could materially impact our financial condition, results of operations and cash flows. Furthermore, to the extent we incur increased electricity costs as a result of either climate change policies or the physical effects of climate change, such increased costs could materially impact our financial condition, results of operations and cash flows. 
Sales and marketing expenses consist primarily of compensation and related costs for sales and marketing personnel, including stock-based compensation, sales commissions,amortization of contract costs, marketing programs, public relations, promotional materials and travel, as well as bad debt expense and amortization of customer contractrelationship intangible assets.
General and administrative expenses consist primarily of salaries and related expenses, including stock-based compensation, accounting, legal and other professional service fees, and other general corporate expenses, such as our corporate regional headquarters office leases and some depreciation expense.
We expect our cost of revenues, sales and marketing expenses and general and administrative expenses to grow in absolute dollars in connection with our business growth. We may periodically see a higher cost of revenues as a percentage of revenue when a large expansion project opens or is acquired, and before it starts generating any meaningful revenue. Furthermore, in relation to cost of revenues, we note that the Americas region has a lower cost of revenues as a percentage of revenue than either EMEA or Asia-Pacific. This is due to both the increased scale and maturity of the Americas region, compared to either the EMEA or Asia-Pacific region, as well as a higher cost structure outside of the Americas, particularly in EMEA. While we expect all three regions to continue to see lower cost of revenues as a percentage of revenues in future periods, weWe expect the trend that sees the Americas having the lowest cost of revenues as a percentage of revenues to continue. As a result, to the extent that revenue growth outside the Americas grows in greater proportion than revenue growth in the Americas, our overall cost of revenues as a percentage of revenues may increase in future periods. Sales and marketing expenses may periodically increase as a percentage of revenues as we continue to scale our operations by investing in sales and marketing initiatives to further increase our revenue, including the hiring of additional headcount and new product innovations. General and administrative expenses may also periodically increase as a percentage of revenues as we continue to scalegrow our operations to support our growth.business.
TaxationNon-GAAP Financial Measures
Liquidity and Capital Resources
Contractual Obligations and Off-Balance-Sheet Arrangements
Critical Accounting Policies and Estimates
Recent Accounting Pronouncements
In 2018, as a REIT
We elected to be taxed as a REIT for federal income tax purposes beginning with our 2015 taxable year. As of December 31, 2016, our REIT structure includes all of our data center operations in the U.S., Canada, Japan, our historical data center operations in Europe and a significant portion of the data center operations acquired in the TelecityGroup acquisition. Our data center operations in other jurisdictions are operated as taxable REIT subsidiaries (“TRSs”). We plan to complete the REIT integration of the majority of the remaining TelecityGroup business during the first half of 2017.
As a REIT, we generally are permitted to deduct from our federal taxable income the dividends we pay to our stockholders (including, for this purpose, the value of any deemed distributions attributable to anti-dilution adjustments made with respect to our 4.75% convertible subordinated notes prior to their maturity in 2016). The income represented by such dividends payment is not subject to federal income tax at the entity level but is taxed, if at all, at the stockholder level. Nevertheless, the income of our TRSs which hold our U.S. operations that may not be REIT compliant is subject, as applicable, to federal and state corporate income tax. Likewise, our foreign subsidiaries continue to be subject to foreign income taxes in jurisdictions in which they hold assets or conduct operations, regardless of whether held or conducted through TRSs or through qualified REIT subsidiaries (“QRSs”). We are also subject to a separate corporate income tax on gain recognized from a sale of a REIT asset where our basis in the asset is determined by reference to the basis of the asset in the hands of a C corporation (such as (i) an asset that we held as of the effective date of our REIT election, that is, January 1, 2015, or (ii) an asset that we or a QRS hold following the liquidation

or other conversion of a former TRS). This built-in-gains tax is generally applicable to any disposition of such an asset during the five-year period after the date we first owned the asset as a REIT asset (e.g., January 1, 2015 in the case of REIT assets we held at the time of our REIT conversion), to the extent of the built-in-gain based on the fair market value of such asset on the date we first held the asset as a REIT asset. If we fail to remain qualified for federal income tax as a REIT, we will be subject to federal income tax at regular corporate tax rates. Even if we remain qualified for federal income tax as a REIT, we may be subject to some federal, state, local and foreign taxes on our income and property in addition to taxes owed with respect to our TRSs’ operations. In particular, while state income tax regimes often parallel the federal income tax regime for REITs, many states do not completely follow federal rules and some may not follow them at all.
On March 23, June 15, September 14, and December 14 of 2016, we paid quarterly cash dividends of $1.75 per share. We expect these quarterly and other applicable distributions to equal or exceed the taxable income that we recognized in 2016.
We continue to monitor our REIT compliance in order to maintain our qualification for federal income tax as a REIT. For this and other reasons, as necessary we may convert certain of our data center operations in additional countries into the REIT structure in future periods.
Results of Operations
Our results of operations for the year ended December 31, 2016 include the results of operations of TelecityGroup from January 15, 2016, and the Paris IBX Data Center Acquisition from August 1, 2016. Our results of operations for the year ended December 31, 2015 include the results of operations of the Nimbo and Bit-isle acquisitions from January 15, 2015 and November 2, 2015, respectively.
Discontinued Operations
We present the results of operations associated with the TelecityGroup data centers that were divested in July 2016 as discontinued operations in our consolidated statement of operations for the year ended December 31, 2016. We did not have any discontinued operations activity during 2015 or 2014.
Years ended December 31, 2016 and 2015
Revenues.    Our revenues for the years ended December 31, 2016 and 2015 were generated from the following revenue classifications and geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2016 % 2015 % Actual Constant Currency
Americas:           
Recurring revenues$1,593,084
 44% $1,432,084
 52% 11% 12%
Non-recurring revenues86,465
 3% 80,451
 3% 7% 8%
 1,679,549
 47% 1,512,535
 55% 11% 11%
EMEA:           
Recurring revenues1,106,652
 31% 651,778
 24% 70% 75%
Non-recurring revenues64,687
 1% 47,029
 2% 38% 42%
 1,171,339
 32% 698,807
 26% 68% 72%
Asia-Pacific:           
Recurring revenues717,638
 20% 485,279
 18% 48% 46%
Non-recurring revenues43,463
 1% 29,246
 1% 49% 46%
 761,101
 21% 514,525
 19% 48% 46%
Total:           
Recurring revenues3,417,374
 95% 2,569,141
 94% 33% 34%
Non-recurring revenues194,615
 5% 156,726
 6% 24% 25%
 $3,611,989
 100% $2,725,867
 100% 33% 34%

Americas Revenues. During the years ended December 31, 2016 and 2015, our revenues from the United States, the largest revenue contributor in the Americas region for the periods, represented approximately 92% and 93%, respectively, of the regional revenues. Growth in Americas revenues was primarily due to (i) $28.9 million of revenue generated from our recently-opened IBX data centers or IBX data center expansions in the Atlanta, Chicago, Dallas, Silicon Valley and Washington, D.C. metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2016, the U.S. dollar was generally stronger relative to the Canadian dollar and Brazilian real than during the year ended December 31, 2015, resulting in approximately $6.6 million of unfavorable foreign currency impact on our Americas revenues during the year ended December 31, 2016 compared to average exchange rates during the year ended December 31, 2015.
EMEA Revenues.  Revenues for our EMEA region for the year ended December 31, 2016 include $404.1 million of revenues attributable to TelecityGroup, which closed in January 2016, and the Paris IBX Data Center Acquisition, which closed in August 2016. After our acquisition of TelecityGroup, the U.K. continues to be our largest revenue contributor in the EMEA region, providing 32% of regional revenues for the year ended December 31, 2016 compared to 37% of regional revenues for the year ended December 31, 2015. Our EMEA revenue growth was primarily due to (i) $404.1 million of revenues attributable to TelecityGroup and the Paris IBX Data Center Acquisition, (ii) approximately $49.7 million of revenue from our recently-opened IBX data centers or IBX data center expansions in the Amsterdam, Frankfurt, Paris and Zurich metro areas and (iii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2016, the impact of foreign currency fluctuations resulted in approximately $33.5 million of net unfavorable foreign currency impact to our EMEA revenues primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2016 compared to the year ended December 31, 2015.
Asia-Pacific Revenues.  Revenues for our Asia-Pacific region for the year ended December 31, 2016 include $148.7 million of revenues attributable to Bit-isle, which closed in November 2015. After our acquisition of Bit-isle, Japan is our largest revenue contributor in the Asia-Pacific region, providing 35% of regional revenues including Bit-isle for the year ended December 31, 2016 compared to 20% for the year ended December 31, 2015. Excluding revenues attributable to Bit-isle, our revenues from Singapore, which was our largest revenue contributor in the Asia-Pacific region before we acquired Bit-isle, represented approximately 38% and 39%, respectively, of the regional revenues for the years ended December 31, 2016 and December 31, 2015. Our Asia-Pacific revenue growth was primarily due to (i) $148.7 million of revenues attributable to Bit-isle, (ii) approximately $58.2 million of revenue generated from our recently-opened IBX data center expansions in the Hong Kong, Melbourne, Shanghai, Singapore, Sydney and Tokyo metro areas and (iii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2016, the U.S. dollar was generally weaker relative to the Japanese Yen than during the year ended December 31, 2015, resulting in approximately $7.5 million of net favorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2016 when compared to average exchange rates during the year ended December 31, 2015.
Cost of Revenues.  Our cost of revenues for the years ended December 31, 2016 and 2015 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2016 % 2015 % Actual Constant Currency
Americas$700,544
 38% $637,604
 49% 10% 11%
EMEA653,766
 36% 350,270
 27% 87% 91%
Asia-Pacific466,560
 26% 303,632
 24% 54% 52%
Total$1,820,870
 100% $1,291,506
 100% 41% 42%
  Years Ended December 31,
  2016 2015
Cost of revenues as a percentage of revenues:    
Americas 42% 42%
EMEA 56% 50%
Asia-Pacific 61% 59%
Total 50% 47%

Americas Cost of Revenues. Our Americas cost of revenues for the years ended December 31, 2016 and 2015 included $241.6 million and $219.1 million, respectively, of depreciation expense. The growth in depreciation expense was primarily due to our IBX expansion activity. In addition to the increase in depreciation expense, the increase in our Americas cost of revenues for the year ended December 31, 2016 compared to the year ended December 31, 2015 was primarily due to (i) $22.9 million of higher utilities, rent and facilities costs, office expense, consulting, and repairs and maintenance in support of our business growth, (ii) $10.1 million of higher costs primarily due to custom service orders in support of our revenue growth and (iii) $4.5 million of higher compensation costs, including general salaries, bonuses and stock-based compensation. During the year ended December 31, 2016, the impact of foreign currency fluctuations resulted in approximately $4.9 million of net favorable foreign currency impact to our Americas cost of revenues primarily due to a generally stronger U.S. dollar relative to the Brazilian real and Canadian dollar during the year ended December 31, 2016 compared to the year ended December 31, 2015. We expect Americas cost of revenues to increase as we continue to grow our business.
EMEA Cost of Revenues. Cost of revenues for our EMEA region for the year ended December 31, 2016 included $273.5 million of cost of revenues attributable to TelecityGroup, which closed in January 2016, and the Paris IBX Data Center Acquisition, which closed in August 2016. Excluding cost of revenues attributable to TelecityGroup and the Paris IBX Data Center Acquisition, EMEA cost of revenues was $380.3 million for the year ended December 31, 2016 compared to $350.3 million for the year ended December 31, 2015. Depreciation expense, excluding TelecityGroup and the Paris IBX Data Center Acquisition, was $100.8 million and $97.8 million for the years ended December 31, 2016 and 2015, respectively. The growth in depreciation expense was primarily due to our IBX data center expansion activity. Excluding the impact of TelecityGroup and the Paris IBX Data Center Acquisition, the remaining increase in our EMEA cost of revenues was primarily due to (i) $16.4 million of higher utilities, consulting, and repairs and maintenance costs in support of our business growth, (ii) $4.7 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and headcount growth (623 EMEA cost of revenues employees, excluding TelecityGroup employees, as of December 31, 2016 versus 541 as of December 31, 2015), (iii) $8.3 million of other costs primarily related to the impact from cash flow hedges, offset by $4.0 million of lower rent and facilities costs. During the year ended December 31, 2016, the impact of foreign currency fluctuations resulted in approximately $13.6 million of net favorable foreign currency impact to our EMEA cost of revenues, primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2016 compared to the year ended December 31, 2015. We expect EMEA cost of revenues to increase as we continue to grow our business and as a result of our acquisitions of TelecityGroup and the Paris IBX data centers.
Asia-Pacific Cost of Revenues. Cost of revenues for our Asia-Pacific region included $116.0 million and $17.4 million of cost of revenues attributable to Bit-isle, which closed in November 2015, for the years ended December 31, 2016 and 2015, respectively. Excluding cost of revenues attributable to Bit-isle, Asia-Pacific cost of revenues was $350.6 million for Asia-Pacific for the year ended December 31, 2016 compared to $286.2 million for the year ended December 31, 2015. Depreciation expense, excluding Bit-isle, was $149.5 million and $116.9 million for the years ended December 31, 2016 and 2015, respectively. The growth in depreciation expense was primarily due to our IBX data center expansion activity. Excluding the impact of our acquisition of Bit-isle, the remaining increase in our Asia-Pacific cost of revenues was primarily due to (i) $26.0 million of higher utilities, rent, facility costs, consulting, custom service orders, repairs and maintenance costs in support of our business growth and (ii) $4.5 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and headcount growth (431 Asia-Pacific cost of revenues employees as of December 31, 2016 versus 390 as of December 31, 2015, excluding Bit-isle employees in both periods). During the year ended December 31, 2016, the U.S. dollar was generally weaker relative to the Japanese Yen than during the year ended December 31, 2015, resulting in approximately $5.6 million of net unfavorable foreign currency impact to our Asia-Pacific cost of revenues during the year ended December 31, 2016 when compared to average exchange rates during the year ended December 31, 2015. We expect Asia-Pacific cost of revenues to increase as we continue to grow our business, including from the impact of our acquisition of Bit-isle.

Sales and Marketing Expenses. Our sales and marketing expenses for the years ended December 31, 2016 and 2015 were split among the following geographic regions (dollars in thousands):
 Years ended December 31, % Change
 2016 % 2015 % Actual Constant Currency
Americas$230,900
 53% $208,310
 63% 11% 11%
EMEA137,887
 31% 71,871
 22% 92% 98%
Asia-Pacific69,955
 16% 51,831
 15% 35% 34%
Total$438,742
 100% $332,012
 100% 32% 34%
 Years Ended December 31,
 2016 2015
Sales and marketing expenses as a percentage of revenues:   
Americas14% 14%
EMEA12% 10%
Asia-Pacific9% 10%
Total12% 12%
Americas Sales and Marketing Expenses. The increase in our Americas sales and marketing expenses was primarily due to (i) $16.4 million of higher compensation costs, including sales compensation, general salaries, bonuses and stock-based compensation and headcount growth (553 Americas sales and marketing employees as December 31, 2016 versus 497 as of December 31, 2015) and (ii) $7.9 million of higher advertising, promotion, consulting and travel expenses to support our growth. During the year ended December 31, 2016, the impact of foreign currency fluctuations to our Americas sales and marketing expenses was not significant when compared to average exchange rates during the year ended December 31, 2015. Over the past several years, we have been investing in our Americas sales and marketing initiatives to further increase our revenue. These investments have included the hiring of additional headcount and new product innovation efforts. We anticipate that we will continue to invest in Americas sales and marketing initiatives. As such, we expect our Americas sales and marketing expenses to continue to grow over the next year.
EMEA Sales and Marketing Expenses. Sales and marketing expenses for our EMEA region for the year ended December 31, 2016 included $53.0 million attributable to TelecityGroup, which closed in January 2016. Excluding the impact of TelecityGroup, our EMEA sales and marketing expenses were $84.9 million for the year ended December 31, 2016 compared to $71.9 million for the year ended December 31, 2015. The increase was primarily due to (i) $6.5 million of higher compensation costs, including sales compensation, general salaries, bonuses, stock-based compensation and headcount growth (283 EMEA sales and marketing employees, excluding TelecityGroup employees, as of December 31, 2016 versus 227 as of December 31, 2015), and (ii) $4.0 million of higher advertising, promotion, consulting, and other marketing expenses to support our growth. During the year ended December 31, 2016, the impact of foreign currency fluctuations resulted in approximately $4.8 million of net favorable foreign currency impact to our EMEA sales and marketing expenses primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2016 compared to the year ended December 31, 2015. Over the past several years, we have been investing in our EMEA sales and marketing initiatives to further increase our revenue. These investments have included the hiring of additional headcount and new product innovation efforts. We expect our EMEA sales and marketing expenses to increase as a result of the TelecityGroup acquisition.
Asia-Pacific Sales and Marketing Expenses. Sales and marketing expenses for our Asia-Pacific region included $15.6 million and $2.2 million of sales and marketing expenses attributable to Bit-isle, which closed in November 2015, for the years ended December 31, 2016 and 2015, respectively. Excluding the impact of Bit-isle, our Asia-Pacific sales and marketing expenses were $54.4 million for the year ended December 31, 2016 compared to $49.6 million for the year ended December 31, 2015. The increase was primarily due to $4.9 million of higher compensation costs, including sales compensation, general salaries, bonuses, stock-based compensation and headcount growth (205 Asia-Pacific sales and marketing employees as of December 31, 2016 versus 183 as of December 31, 2015, excluding Bit-isle employees in both periods). For the year ended December 31, 2016, the impact of foreign currency fluctuations to our Asia-Pacific sales and marketing expenses was not significant when compared to average exchange rates for the year ended December 31, 2015. Over the past several years, we have been investing in our Asia-Pacific sales and marketing initiatives to further increase our revenue. These investments have included the hiring of additional headcount and new product innovation efforts. We expect our Asia-Pacific sales and marketing expenses to increase as a result of the Bit-isle acquisition.

General and Administrative Expenses. Our general and administrative expenses for the years ended December 31, 2016 and 2015 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2016 % 2015 % Actual Constant Currency
Americas$391,637
 56% $347,421
 70% 13% 13%
EMEA228,310
 33% 92,803
 19% 146% 157%
Asia-Pacific74,614
 11% 53,060
 11% 41% 40%
Total$694,561
 100% $493,284
 100% 41% 43%
 Years Ended December 31,
 2016 2015
General and Administrative expenses as a percentage of revenues:   
Americas23% 23%
EMEA19% 13%
Asia-Pacific10% 10%
Total19% 18%
Americas General and Administrative Expenses. The increase in our Americas general and administrative expenses was primarily due to (i) $17.5 million of higher depreciation expense associated with certain systems to improve our quote to order and billing processes and other systems to support the integration and growth of our business, (ii) $16.0 million of higher compensation costs, including general salaries, bonuses, stock-based compensation, and headcount growth (934 Americas general and administrative employees as of December 31, 2016 versus 800 as of December 31, 2015) and (iii) $10.7 million of higher office expense, rent and facility cost and outside services consulting costs also in line with our overall growth. During the year ended December 31, 2016, the impact of foreign currency fluctuations to our Americas general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2015. Over the last several years, we have been investing in our Americas general and administrative functions to scale this region effectively for growth, which has included additional investments into improving our back office systems. We expect our current efforts to improve our back office systems will continue over the next several years. Going forward, although we are carefully monitoring our spending, we expect Americas general and administrative expenses to increase as we continue to further scale our operations to support our growth, including these investments in our back office systems and maintaining our REIT qualification.
EMEA General and Administrative Expenses. General and administrative expenses for our EMEA region for the year ended December 31, 2016 included $92.7 million attributable to TelecityGroup, which closed in January 2016, and the Paris IBX Data Center Acquisition, which closed in August 2016. Excluding the impact of TelecityGroup and the Paris IBX Data Center Acquisition, our EMEA general and administrative expenses were $135.6 million for the year ended December 31, 2016 compared to $92.8 million for the year ended December 31, 2015. Excluding the impact of TelecityGroup and the Paris IBX Data Center Acquisition, the increase was primarily due to (i) $22.8 million of higher consulting services, travel, office and rent and facility costs to support the integration of TelecityGroup and (ii) $18.0 million of higher compensation costs, including general salaries, bonuses, stock-based compensation and headcount growth (562 EMEA general and administrative employees, excluding TelecityGroup employees, as of December 31, 2016 versus 420 as of December 31, 2015). During the year ended December 31, 2016, the impact of foreign currency fluctuations resulted in approximately $10.1 million of net favorable foreign currency impact to our EMEA general and administrative expenses primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2016 compared to the year ended December 31, 2015. The increase in EMEA general and administrative expenses as a percentage of revenue is primarily due to an increase in amortization expense of $43.9 million associated with the TelecityGroup acquired intangibles. Over the last several years, we have been investing in our EMEA general and administrative functions as a result of our ongoing efforts to scale this region effectively for growth. Going forward, although we are carefully monitoring our spending given the current economic environment, we expect our EMEA general and administrative expenses to increase in future periods as we continue to scale our operations to support our growth, as well as ongoing integration of TelecityGroup.
Asia-Pacific General and Administrative Expenses. General and administrative expenses for our Asia-Pacific region included $17.4 million and $5.8 million of general and administrative expenses attributable to Bit-isle, which closed in November 2015, for the years ended December 31, 2016 and 2015, respectively. Excluding the impact of Bit-isle, our Asia-Pacific general and

administrative expenses were $57.2 million for the year ended December 31, 2016, as compared to $47.3 million for the year ended December 31, 2015. Excluding the impact of Bit-isle, the increase was primarily due to $8.5 million of higher compensation costs, including general salaries, bonuses, stock-based compensation and headcount growth (317 Asia-Pacific general and administrative employees as of December 31, 2016 versus 266 as of December 31, 2015, excluding Bit-isle employees in both periods). For the year ended December 31, 2016, the impact of foreign currency fluctuations to our Asia-Pacific general and administrative expenses was not significant when compared to average exchange rates of the year ended December 31, 2015. Going forward, although we are carefully monitoring our spending, we expect Asia-Pacific general and administrative expenses to increase as a result of our acquisition and integration of Bit-isle and as we continue to scale our operations to support our growth.
Acquisition Costs.  During the year ended December 31, 2016, we recorded acquisition costs totaling $64.2 million primarily attributed to the EMEA region due to the acquisitions of Telecity and the Paris IBX Data Center. During the year ended December 31, 2015, we recorded acquisition costs totaling $41.7 million primarily attributed to the EMEA region, and to a lesser degree, to the Asia-Pacific region.
Impairment Charges. During the year ended December 31, 2016, we recorded impairment charges totaling $7.7 million in the Asia-Pacific region relating to assets held for sale. We did not have impairment charges during the year ended December 31, 2015.
Gain on Asset Sales. During the year ended December 31, 2016, we recorded a gain on asset sales of $32.8 million primarily relating to the sale of the LD2 data center in the EMEA region and a parcel of land in San Jose in the Americas region. We did not have any gain on asset sales during the year ended December 31, 2015.
Income from Operations. Our income from operations for the years ended December 31, 2016 and 2015 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2016 % 2015 % Actual Constant Currency
Americas$352,180
 57% $324,458
 57% 9% 9%
EMEA124,853
 20% 145,527
 26% (14)% (11)%
Asia-Pacific141,706
 23% 97,357
 17% 46% 44%
Total$618,739
 100% $567,342
 100% 9% 10%
Americas Income from Operations. The increase in our Americas income from continuing operations was due to higher revenues as result of our IBX data center expansion activity and organic growth asmore fully described above as well as the gain recognized on the sale of the San Jose land parcel, partially offset by higher cost of revenues and operating expenses primarily attributable to higher compensation and other headcount related expenses to support our growth. The impact of foreign currency fluctuations on our Americas income from continuing operations for the year ended December 31, 2016 was not significant when compared to average exchange rates of the year ended December 31, 2015.
EMEA Income from Operations. The decrease in our EMEA income from continuing operations was primarily due to acquisition and integration costs incurred in connection with our acquisition of TelecityGroup, which closed in January 2016, as well as the increased depreciation and amortization created from the purchase accounting for TelecityGroup and the Paris IBX Data Center Acquisition, partially offset by the gain recognized on the sale of the LD2 data center. During the year ended December 31, 2016, the impact of foreign currency fluctuations resulted in approximately $5.2 million of net unfavorable foreign currency impact to our EMEA income from continuing operations primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2016 compared to the year ended December 31, 2015.
Asia-Pacific Income from Operations. The increase in our Asia-Pacific income from continuing operations was primarily due to higher revenues as a result of our acquisition and integration of Bit-isle, which closed in November 2015, as well as our IBX data center expansion activity and organic growth as described above, partially offset by the impairment charges, higher cost of revenues and operating expenses primarily attributable to our acquisition of Bit-isle as well as higher compensation and other headcount related expenses and higher professional fees to support our growth. The impact of foreign currency fluctuations on our Asia-Pacific income from continuing operations for the year ended December 31, 2016 was not significant when compared to average exchange rates of the year ended December 31, 2015.
Interest Income. Interest income was $3.5 million and $3.6 million for the years ended December 31, 2016 and 2015, respectively. The average yield for the year ended December 31, 2016 was 0.37% versus 0.38% for the year ended December 31,

2015. We expect our interest income to remain at these low levels for the foreseeable future due to lower invested balances and a portfolio more weighted towards money market funds.
Interest Expense.  Interest expense increased to $392.2 million for the year ended December 31, 2016 from $299.1 million for the year ended December 31, 2015. This increase in interest expense was primarily due to the impact of our $1.1 billion of senior notes issued in December 2015, $614.7 million outstanding in seven-year term loans we borrowed in January 2016 and $406.6 million outstanding in five-year term loans we borrowed in October 2016, replacing a bridge term loan facility we borrowed to finance our acquisition of Bit-isle, which closed in November 2015, as well as additional financings such as various capital lease and other financing obligations to support our expansion projects. The increase in interest expense is partially offset by the settlement of the 4.75% convertible debt in June 2016. During the years ended December 31, 2016 and 2015, we capitalized $13.3 million and $10.9 million, respectively, of interest expense to construction in progress. Going forward, we expect to incur higher interest expense as we borrowed the €1.0 billion Term B-2 Loan in January 2017. We also expect to incur additional indebtedness to support our growth and acquisition opportunities including the Verizon Asset Purchase, resulting in higher interest expense going forward.
Other Income (Expense). We recorded net other expense of $57.9 million and $60.6 million for the years December 31, 2016 and 2015, respectively, primarily due to foreign currency exchange losses during the periods.
Loss on Debt Extinguishment. During the year ended December 31, 2016, we recorded a $12.3 million loss on debt extinguishment as a result of the settlement of the financing obligations for our Paris 3 IBX data center, a portion of the lender fees associated with the Japanese Yen Term Loan, and the prepayment and termination of our 2012 and 2013 Brazil financings. During the year ended December 31, 2015, we recorded a $0.3 million loss on debt extinguishment which was attributable to partial conversions of our 4.75% convertible subordinated notes in December 2015.
Income Taxes. Effective January 1, 2015, we have operated as a REIT for federal income tax purposes. As a REIT, we are generally not subject to federal income taxes on our taxable income distributed to our stockholders. We intend to distribute the entire taxable income generated by the operations of our REIT and its QRSs for the tax years ended December 31, 2016 and December 31, 2015, respectively. As such, no provision for U.S. income taxes for the REIT and its QRSs has been included in the accompanying consolidated financial statements for the years ended December 31, 2016 and 2015.
We have made TRS elections for some of our subsidiaries in and outside the U.S. In general, a TRS may provide services that would otherwise be considered impermissible for REITs to provide and may hold assets that REITs cannot hold directly. U.S. income taxes for the TRS entities located in the U.S. and foreign income taxes for our foreign operations regardless of whether the foreign operations are operated as a QRS or TRS have been accrued, as necessary, for the years ended December 31, 2016 and 2015.
For the years ended December 31, 2016 and 2015, we recorded $45.5 million and $23.2 million of income tax expenses, respectively. Our effective tax rates were 28.4% and 11.0%, respectively, for the years ended December 31, 2016 and 2015. The increase in the effective tax rate in 2016 as compared to 2015 is primarily due to higher profits in the domestic TRS and larger amount of non-deductible interest expenses within our EMEA operations.
We recorded excess income tax benefits of $2,773,000 and $30,000 during the year ended December 31, 2016 and 2015, respectively, in our consolidated balance sheets.
Adjusted EBITDA. Adjusted EBITDA is a key factor in how we assess the operating performance of our segments and develop regional growth strategies such as IBX data center expansion decisions. We define adjusted EBITDA as income or loss from operations plus depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs and gain on asset sales. See "Non-GAAP Financial Measures" below for more information about adjusted EBITDA and a reconciliation of adjusted EBITDA to income or loss from operations. Our adjusted EBITDA for the years ended December 31, 2016 and 2015 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2016 % 2015 % Actual Constant Currency
Americas$787,311
 47% $698,604
 55% 13% 13%
EMEA494,263
 30% 318,561
 25% 55% 59%
Asia-Pacific375,900
 23% 254,462
 20% 48% 46%
Total$1,657,474
 100% $1,271,627
 100% 30% 31%

Americas Adjusted EBITDA. The increase in our Americas adjusted EBITDA was due to higher revenues as result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2016, currency fluctuations resulted in approximately $2.2 million of net unfavorable foreign currency impact on our Americas adjusted EBITDA primarily due to the generally stronger U.S. dollar relative to the Brazilian real and Canadian dollar during the year ended December 31, 2016 compared to the year ended December 31, 2015.
EMEA Adjusted EBITDA. Adjusted EBITDA for our EMEA region includes $189.0 million of adjusted EBITDA attributable to our acquisition of TelecityGroup, which closed in January 2016, and the Paris IBX Data Center Acquisition, which closed in August 2016. Excluding adjusted EBITDA attributable to TelecityGroup and the Paris IBX Data Center Acquisition, the decrease in our EMEA adjusted EBITDA was primarily due to higher operating costs as result of our IBX data center expansion activity and organic growth as described above and integration costs relating to TelecityGroup acquisition. During the year ended December 31, 2016, currency fluctuations resulted in approximately $10.7 million of net unfavorable foreign currency impact to our EMEA adjusted EBITDA primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2016 compared to the year ended December 31, 2015.
Asia-Pacific Adjusted EBITDA. Adjusted EBITDA for our Asia-Pacific region includes $50.3 million and $5.2 million of adjusted EBITDA attributable to our acquisition of Bit-isle, which closed in November 2015, for the years ended December 31, 2016 and 2015, respectively. Excluding adjusted EBITDA attributable to Bit-isle, the increase in our Asia-Pacific adjusted EBITDA was primarily due to higher revenues as result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2016, the U.S. dollar was generally weaker relative to the Japanese Yen than during the year ended December 31, 2015, resulting in approximately $4.1 million of net favorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2016 when compared to average exchange rates during the year ended December 31, 2015.
Years Ended December 31, 2015 and 2014
Revenues.    Our revenues for the years ended December 31, 2015 and 2014 were generated from the following revenue classifications and geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2015 % 2014 % Actual Constant Currency
Americas:           
Recurring revenues$1,432,084
 52% $1,311,518
 54% 9% 12%
Non-recurring revenues80,451
 3% 64,585
 3% 25% 25%
 1,512,535
 55% 1,376,103
 57% 10% 13%
EMEA:           
Recurring revenues651,778
 24% 598,953
 24% 9% 23%
Non-recurring revenues47,029
 2% 38,312
 1% 23% 41%
 698,807
 26% 637,265
 25% 10% 24%
Asia-Pacific:           
Recurring revenues485,279
 18% 407,319
 17% 19% 31%
Non-recurring revenues29,246
 1% 23,089
 1% 27% 39%
 514,525
 19% 430,408
 18% 20% 31%
Total:           
Recurring revenues2,569,141
 94% 2,317,790
 95% 11% 18%
Non-recurring revenues156,726
 6% 125,986
 5% 24% 32%
 $2,725,867
 100% $2,443,776
 100% 12% 19%
Americas Revenues. During the years ended December 31, 2015 and 2014, our revenues from the United States, the largest revenue contributor in the Americas region for the periods, represented approximately 93% and 91%, respectively, of the regional revenues. Growth in Americas revenues was primarily due to (i) $44.5 million of revenue generated from our recently-opened IBX data centers and IBX data center expansions in the Dallas, New York, Rio de Janeiro, Silicon Valley, Toronto and Washington DC metro areas and (ii) an increase in orders from both our existing customers and new customers during the period as reflected in the growth in our utilization rate, as discussed above, in both our new and existing IBX data centers. During the year ended

December 31, 2015, currency fluctuations resulted in approximately $37.7 million of unfavorable foreign currency impact on our Americas revenues primarily due to the generally stronger U.S. dollar relative to the Brazilian real and Canadian dollar during the year ended December 31, 2015 compared to the year ended December 31, 2014.
EMEA Revenues.  During the years ended December 31, 2015 and 2014, our revenues from the United Kingdom, the largest revenue contributor in the EMEA region for the periods, represented approximately 37% and 36%, respectively, of the regional revenues. Our EMEA revenue growth was due to (i) $23.6 million of revenue generated from our recently-opened IBX data centers and IBX data center expansions in the Amsterdam, Frankfurt, London, and Paris metro areas and (ii) an increase in orders from both our existing customers and new customers during the period as reflected in the growth in our utilization rate, as discussed above, in both our new and existing IBX data centers. During the year ended December 31, 2015, currency fluctuations resulted in approximately $94.1 million of net unfavorable foreign currency impact on our EMEA revenues primarily due to the generally stronger U.S. dollar relative to the British pound and Euro during the year ended December 31, 2015 compared to the year ended December 31, 2014.
Asia-Pacific Revenues.  Our revenues from Singapore, the largest revenue contributor in the Asia-Pacific region, represented approximately 37% and 38% of the regional revenues for the years ended December 31, 2015 and 2014. Our Asia-Pacific revenue growth was due to (i) $58.8 million of revenue generated from our recently-opened IBX data centers and IBX data center expansions in the Hong Kong, Melbourne, Shanghai, Singapore and Tokyo metro areas and (ii) an increase in orders from both our existing customers and new customers during the period as reflected in the growth in our utilization rate, as discussed above, in both our new and existing IBX data centers. In addition, our Asia-Pacific revenues for the year ended December 31, 2015 included $21.6 million of revenue attributable to our acquisition of Bit-isle, which closed on November 2, 2015. During the year ended December 31, 2015, currency fluctuations resulted in approximately $46.4 million of net unfavorable foreign currency impact on our Asia-Pacific revenues primarily due to the generally stronger U.S. dollar relative to the Australian dollar, Japanese yen and Singapore dollar during the year ended December 31, 2015 compared to the year ended December 31, 2014.
Cost of Revenues.  Our cost of revenues for the years ended December 31, 2015 and 2014 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2015 % 2014 % Actual Constant Currency
Americas$637,604
 49% $605,184
 51% 5% 10%
EMEA350,270
 27% 337,095
 28% 4% 19%
Asia-Pacific303,632
 24% 255,606
 21% 19% 30%
Total$1,291,506
 100% $1,197,885
 100% 8% 17%
 Years Ended December 31,
 2015 2014
Cost of revenues as a percentage of revenues:   
Americas42% 44%
EMEA50% 53%
Asia-Pacific59% 59%
Total47% 49%
Americas Cost of Revenues. Our Americas cost of revenues for the years ended December 31, 2015 and 2014 included $219.1 million and $218.4 million, respectively, of depreciation expense. The increase in our Americas cost of revenues was primarily due to (i) $17.4 million of higher office expense, utilities, and repair and maintenance costs in support of our business growth, (ii) $7.3 million of higher compensation costs, including general salaries, bonuses, stock-based compensation and headcount growth (1,032 employees included in Americas cost of revenues as of December 31, 2015 versus 941 as of December 31, 2014), (iii) $3.9 million of higher costs associated with equipment resales to support the growth of non-recurring revenues and (iv) $3.5 million of higher property and real property tax expenses primarily due to our newly-opened IBX data centers during the year ended December 31, 2015, partially offset by $2.6 million of lower rent and facility costs primarily as a result of certain leases being accounted for as capital leases rather than as operating leases. During the year ended December 31, 2015, currency fluctuations resulted in approximately $29.6 million of net favorable foreign currency impact on our Americas cost of revenues primarily due to the generally stronger U.S. dollar relative to the Brazilian real and Canadian dollar during the year ended December 31, 2015 compared to the year ended December 31, 2014.

EMEA Cost of Revenues. EMEA cost of revenues included $97.8 million of depreciation expense for the years ended December 31, 2015 and 2014. The increase in our EMEA cost of revenues was primarily due to $3.4 million of higher compensation costs, including general salaries, bonuses, stock-based compensation and headcount growth (541 employees included in EMEA cost of revenues as of December 31, 2015 versus 473 as of December 31, 2014), and $13.2 million of higher costs associated with equipment resales, bandwidth and other customer services in support of our non-recurring revenues growth as well as an increase in net losses related to cash flow derivatives. These increases were partially offset by $5.0 million of lower rent, facilities and utilities expenses and $2.7 million of lower consulting costs. During the year ended December 31, 2015, the impact of foreign currency fluctuations resulted in approximately $50.8 million of net favorable foreign currency impact on our EMEA cost of revenues primarily due to the generally stronger U.S. dollar relative to the British pound and Euro during the year ended December 31, 2015 compared to the year ended December 31, 2014.
Asia-Pacific Cost of Revenues. Asia-Pacific cost of revenues for the year ended December 31, 2015 included $17.4 million of cost of revenues attributable to our acquisition of Bit-isle, which closed in November 2015. Excluding cost of revenues attributable to Bit-isle, Asia-Pacific cost of revenues for the year ended December 31, 2015 was $286.2 million compared to $255.6 million for the year ended December 31, 2014. Depreciation expense, excluding Bit-isle, was $116.9 million and $101.4 million for the years ended December 31, 2015 and 2014, respectively. Growth in depreciation expense was primarily due to our IBX data center expansion activity. In addition to the increase in depreciation expense, the increase in Asia-Pacific cost of revenues, excluding cost of revenues attributable to Bit-isle, was primarily due to $9.9 million in higher consulting costs, utility costs, repairs and maintenance costs and rent and facility costs in support of our revenue growth as well as $2.8 million of higher compensation costs, including general salaries, bonuses, stock-based compensation and headcount growth (390 employees included in Asia-Pacific cost of revenues, excluding Bit-isle employees, as of December 31, 2015 versus 342 as of December 31, 2014). During the year ended December 31, 2015, currency fluctuations resulted in approximately $24.7 million of net favorable foreign currency impact on our Asia-Pacific cost of revenues primarily due to the generally stronger U.S. dollar relative to the Australian dollar, Japanese yen and Singapore dollar during the year ended December 31, 2015 compared to the year ended December 31, 2014.
Sales and Marketing Expenses. Our sales and marketing expenses for the years ended December 31, 2015 and 2014 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2015 % 2014 % Actual Constant Currency
Americas$208,310
 63% $172,264
 58% 21% 24%
EMEA71,871
 22% 79,890
 27% (10)% —%
Asia-Pacific51,831
 15% 43,949
 15% 18% 27%
Total$332,012
 100% $296,103
 100% 12% 18%
 Years Ended December 31,
 2015 2014
Sales and marketing expenses as a percentage of revenues:   
Americas14% 13%
EMEA10% 13%
Asia-Pacific10% 10%
Total12% 12%
Americas Sales and Marketing Expenses. The increase in our Americas sales and marketing expenses was primarily due to (i) $26.5 million of higher compensation costs, including sales compensation, general salaries, bonuses, commission and stock-based compensation as a result of business and headcount growth (497 Americas sales and marketing employees as of December 31, 2015 versus 450 as of December 31, 2014) and (ii) $8.6 million of higher travel, consulting and advertising and promotion costs in support of our business growth. During the year ended December 31, 2015, currency fluctuations resulted in approximately $4.7 million of net favorable foreign currency impact on our Americas sales and marketing expenses primarily due to the generally stronger U.S. dollar relative to the Brazilian real and Canadian dollar during the year ended December 31, 2015 compared to the year ended December 31, 2014. Over the past several years, we have been investing in our Americas sales and marketing initiatives to further increase our revenue. These investments have included the hiring of additional headcount and new product innovation efforts.

EMEA Sales and Marketing Expenses. The decrease in our EMEA sales and marketing expenses was primarily due to $4.5 million of lower professional fees primarily due to the termination of certain contracts during 2014. During the year ended December 31, 2015, the impact of foreign currency fluctuations resulted in approximately $8.3 million of net favorable foreign currency impact on our EMEA sales and marketing expenses primarily due to the generally stronger U.S. dollar relative to the British pound and Euro compared to the year ended December 31, 2014. Over the past several years, we have been investing in our EMEA sales and marketing initiatives to further increase our revenue. These investments have included the hiring of additional headcount and new product innovation efforts and, as a result, our EMEA sales and marketing expenses as a percentage of revenues have increased. We expect our EMEA sales and marketing expenses to further increase as a result of the TelecityGroup acquisition.
Asia-Pacific Sales and Marketing Expenses. Asia-Pacific sales and marketing expenses for the year ended December 31, 2015 included $2.2 million of sales and marketing expenses attributable to our acquisition of Bit-isle, which closed in November 2015. Excluding Bit-isle, Asia-Pacific sales and marketing expenses were $49.6 million for the year ended December 31, 2015 compared to $43.9 million for the year ended December 31, 2014. The increase in our Asia-Pacific sales and marketing expenses, excluding Bit-isle, was primarily due to $3.6 million of higher compensation costs, including sales compensation, general salaries, bonuses, commission and stock-based compensation as a result of business and headcount growth (183 Asia-Pacific sales and marketing employees, excluding Bit-isle employees, versus 155 as of December 31, 2014). During the year ended December 31, 2015, the impact of foreign currency fluctuations resulted in approximately $3.6 million of net favorable impact on our Asia-Pacific sales and marketing expenses primarily due to a generally stronger U.S. dollar relative to the Australian dollar, Japanese yen and Singapore dollar during the year ended December 31, 2015 compared to the year ended December 31, 2014. Over the past several years, we have been investing in our Asia-Pacific sales and marketing initiatives to further increase our revenue. These investments have included the hiring of additional headcount and new product innovation efforts and, as a result, our Asia-Pacific sales and marketing expenses have increased. We expect our APAC sales and marketing expenses to further increase as a result of the Bit-Isle acquisition.
General and Administrative Expenses. Our general and administrative expenses for the years ended December 31, 2015 and 2014 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2015 % 2014 % Actual Constant Currency
Americas$347,421
 70% $315,533
 72% 10% 11%
EMEA92,803
 19% 79,942
 18% 16% 26%
Asia-Pacific53,060
 11% 42,541
 10% 25% 35%
Total$493,284
 100% $438,016
 100% 13% 16%
 Years Ended December 31,
 2015 2014
General and Administrative expenses as a percentage of revenues:   
Americas23% 23%
EMEA13% 13%
Asia-Pacific10% 10%
Total18% 18%
Americas General and Administrative Expenses. The increase in our Americas general and administrative expenses was primarily due to (i) $15.0 million of higher compensation costs, including general salaries, bonuses and stock-based compensation as a result of headcount growth (800 Americas general and administrative employees as of December 31, 2015 versus 731 as of December 31, 2014), (ii) $17.0 million of higher depreciation expenses primarily associated with the implementation of the Oracle R12 ERP system and certain systems to support the REIT conversion and (iii) $10.9 million of higher office expenses, travel, entertainment, and rent and facility costs, in support of our business growth, partially offset by an $11.3 million reduction in professional fees related to our REIT conversion as compared to those incurred during the year ended December 31, 2014. During the year ended December 31, 2015, currency fluctuations resulted in approximately $3.2 million of net favorable foreign currency impact on our Americas general and administrative expenses primarily due to the generally stronger U.S. dollar relative to the Brazilian real and Canadian dollar during the year ended December 31, 2015 compared to the year ended December 31, 2014. Over the course of the past year, we have been investing in our Americas general and administrative functions to scale this region effectively for growth, which has included additional investments into improving our back office systems. We expect our current efforts to improve our back office systems will continue over the next several years.

EMEA General and Administrative Expenses. The increase in our EMEA general and administrative expenses was primarily due to (i) approximately $4.2 million of higher compensation costs, including general salaries, bonuses and stock-based compensation as a result of headcount growth (420 EMEA general and administrative employees as of December 31, 2015 versus 353 as of December 31, 2014), (ii) $4.3 million of higher depreciation expenses due to implementation of the Oracle R12 ERP system and certain systems to support the REIT conversion and (iii) $2.8 million of higher consulting costs primarily due to integration efforts in connection with our acquisition of TelecityGroup as well as an increase in net losses related to cash flow hedging derivatives. During the year ended December 31, 2015, the impact of foreign currency fluctuations resulted in approximately $7.8 million of net favorable foreign currency impact on our EMEA general and administrative expenses primarily due to the generally stronger U.S. dollar relative to the British pound and Euro during the year ended December 31, 2015 compared to the year ended December 31, 2014.
Asia-Pacific General and Administrative Expenses. Asia-Pacific general and administrative expenses for the year ended December 31, 2015 included $5.8 million of general and administrative expenses attributable to our acquisition of Bit-isle, which closed on November 2, 2015. Excluding general and administrative expenses attributable to Bit-isle, Asia-Pacific general and administrative expenses for the year ended December 31, 2015 were $47.3 million compared to $42.5 million for the year ended December 31, 2014. Excluding general and administrative expenses attributable to Bit-isle, the increase in our Asia-Pacific general and administrative expenses was primarily due to a $2.2 million increase in consulting costs, legal fees and other costs for tax-related matters as well as higher compensation costs, including general salaries, bonuses and stock-based compensation as a result of headcount growth (266 Asia-Pacific general and administrative employees, excluding Bit-isle employees, as of December 31, 2015 versus 224 as of December 31, 2014). During the year ended December 31, 2015, the impact of foreign currency fluctuations resulted in approximately $3.4 million of net favorable impact on our Asia-Pacific general and administrative expenses primarily due to a generally stronger U.S. dollar relative to the Australian dollar, Japanese yen and Singapore dollar compared to the year ended December 31, 2014.
Acquisition Costs.  During the year ended December 31, 2015, we recorded acquisition costs totaling $41.7 million primarily attributed to the EMEA region, and to a lesser degree, to the Asia-Pacific region. During the year ended December 31, 2014, we recorded acquisition costs totaling $2.5 million primarily attributed to the EMEA regions.
Income from Operations. Our income from operations for the years ended December 31, 2015 and 2014 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2015 % 2014 % Actual Constant Currency
Americas$324,458
 57% $282,219
 56% 15% 15%
EMEA145,527
 26% 138,685
 27% 5% 23%
Asia-Pacific97,357
 17% 88,362
 17% 10% 24%
Total$567,342
 100% $509,266
 100% 11% 19%
Americas Income from Operations. The increase in our Americas income from operations was due to higher revenues as result of our IBX data center expansion activity and organic growth as described above, partially offset by higher operating expenses as a percentage of revenues primarily attributable to higher compensation and other headcount related expenses to support our growth.
EMEA Income from Operations. The increase in our EMEA income from operations was primarily due to higher revenues as a result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2015, currency fluctuations resulted in approximately $25.6 million of net unfavorable foreign currency impact on our EMEA income from operations primarily due to the generally stronger U.S. dollar relative to the British pounds and Euro during the year ended December 31, 2015 compared to the year ended December 31, 2014.
Asia-Pacific Income from Operations. The increase in our Asia-Pacific income from operations was primarily due to higher revenues as a result of our IBX data center expansion activity and organic growth as described above, partially offset by higher operating expenses as a percentage of revenues primarily attributable to higher compensation and other headcount related expenses and higher professional fees to support our growth. During the year ended December 31, 2015, currency fluctuations resulted in approximately $17.5 million of net unfavorable foreign currency impact on our Asia-Pacific income from operations primarily due to the generally stronger U.S. dollar relative to the Australian dollar, Japanese yen and Singapore dollar during the year ended December 31, 2015 compared to the year ended December 31, 2014.

Interest Income. Interest income was $3.6 million and $2.9 million for the years ended December 31, 2015 and 2014, respectively. The average yield for the year ended December 31, 2015 was 0.38% versus 0.33% for the year ended December 31, 2014.
Interest Expense.  Interest expense increased to $299.1 million for the year ended December 31, 2015 from $270.6 million for the year ended December 31, 2014. This increase in interest expense was primarily due to the full impact recognized for the year ended December 31, 2015 of our $1.25 billion senior notes offering in November 2014, the $0.5 billion Term loan A we borrowed in December 2014 under our senior credit facility and $18 million of higher interest expense from various capital lease and other financing obligations to support our expansion projects, which was partially offset by the redemption of our 7.00% senior notes in December 2014, the settlement of the 3.00% convertible notes and the partial redemption of the 4.75% convertible notes in June 2014. During the years ended December 31, 2015 and 2014, we capitalized $10.9 million and $19.0 million, respectively, of interest expense to construction in progress.
Other Income (Expense). We recorded net expense of $60.6 million and net income of $0.1 million for the years December 31, 2015 and 2014, respectively, primarily due to foreign currency exchange gains and losses during the periods. The expense recorded in 2015 is primarily attributed to foreign currency losses to fund the TelecityGroup acquisition purchase price.
Loss on Debt Extinguishment. During the year ended December 31, 2015, we recorded a $0.3 million loss on debt extinguishment which was attributable to partial conversions of our 4.75% convertible subordinated notes in December 2015. During the year ended December 31, 2014, we recorded a $157.0 million loss on debt extinguishment, of which $51.2 million was attributable to the exchanges of the 3.00% convertible subordinated notes and 4.75% convertible subordinated notes, $103.3 million was attributable to the redemption of our $750.0 million 7.00% senior notes and $2.5 million was attributable to the prepayment and termination of our $750.0 million multicurrency credit facility. For additional information, see “Loss on Debt Extinguishment” in Note 1012 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.
Income Taxes. During10-K, we sold 930,934 shares of our common stock for approximately $388.2 million, net of payment of commissions to the year endedsales agents and estimated equity offering costs under our ATM program launched in 2017 (the "2017 ATM Program"). As of December 31, 20152018, no shares remained available for sale under the 2017 ATM Program. In December 2018, we launched another ATM program, under which we may offer and 2014,sell from time to time up to an aggregate of $750.0 million of our common stock in "at the market" transactions (the "2018 ATM Program"). As of December 31, 2018, no sales have been made under the 2018 ATM Program.
In July 2018, as more fully described in Note 11 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we recorded $23.2entered into an amendment to our existing credit agreement to add a senior unsecured term loan in an aggregate principal amount of ¥47.5 billion (the "JPY Term Loan"). Concurrent with the closing of our JPY Term Loan, we drew down the full ¥47.5 billion of the JPY Term Loan, or approximately $424.7 million, and $345.5 millionprepaid the remaining principal of income tax expenses, respectively.our existing Japanese Yen Term Loan of ¥43.8 billion, or approximately $391.3 million. We recognized a significantly lower income tax provisionloss on debt extinguishment of $2.2 million during the third quarter of 2018 in 2015connection therewith.
In April 2018, as comparedmore fully described in Note 3 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we completed the acquisition of Metronode for a cash purchase price of A$1.034 billion or approximately $804.6 million at the exchange rate in effect on April 18, 2018 (the "Metronode Acquisition"). We accounted for this transaction as a business combination using the acquisition method of accounting. The valuation and purchase accounting of this acquisition have not yet been finalized as of December 31, 2018.
In April 2018, as more fully described in Note 3 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we completed the acquisition of Infomart Dallas for total consideration of approximately $804.0 million (the "Infomart Dallas Acquisition"), consisting of approximately $45.8 million in cash, subject to customary adjustments, and $758.2 million aggregate fair value of 5.000% senior unsecured notes. We accounted for this transaction as a business combination using the acquisition method of accounting. The valuation and purchase accounting of this acquisition have not yet been finalized as of December 31, 2018.
In March 2018, as more fully described in Note 11 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we issued €750.0 million, or approximately $929.9 million in U.S. dollars, at the exchange rate in effect on March 14, 2018, aggregate principal amount of 2.875% senior notes due March 15, 2024. We incurred debt issuance costs of $11.6 million related to the income tax provision in 2014 primarily2.875% Euro Senior Notes due 2024.


Overview
Equinix provides global data center offerings that protect and connect the world's most valued information assets. Global enterprises, financial services companies and content and network service providers rely upon Equinix's leading insight and data centers around the world for the safehousing of their critical IT equipment and the ability to directly connect to the de-recognition,networks that enable today's information-driven economy. The acquisitions of Infomart Dallas and Metronode expanded our total global footprint to 200 IBX data centers across 52 markets around the world. Equinix offers the following solutions: (i) premium data center colocation, (ii) interconnection and exchange and (iii) outsourced IT infrastructure solutions. As of December 31, 2018, we operated or had partner IBX data centers in 2014, ofBrazil, Canada, Colombia and throughout the deferred tax assetsU.S. in the Americas region; Bulgaria, Finland, France, Germany, Ireland, Italy, the Netherlands, Poland, Portugal, Spain, Sweden, Switzerland, Turkey, the United Arab Emirates and liabilitiesthe United Kingdom in the EMEA region; and Australia, China, Hong Kong, Indonesia, Japan and Singapore in the Asia-Pacific region.

 Our data centers in 52 markets around the world are a global platform, which allows our customers to increase information and application delivery performance while significantly reducing costs. This global platform and the quality of our IBX data centers have enabled us to establish a critical mass of customers. As more customers choose our IBX data centers, it benefits their suppliers and business partners to colocate with us as well, in order to gain the full economic and performance benefits of our offerings. These partners, in turn, pull in their business partners, creating a "marketplace" for their services. Our global platform enables scalable, reliable and cost-effective colocation, interconnection and traffic exchange that lowers overall cost and increases flexibility. Our focused business model is built on our critical mass of customers and the resulting "marketplace" effect. This global platform, combined with our strong financial position, continues to drive new customer growth and bookings.

Historically, our market has been served by large telecommunications carriers who have bundled telecommunications products and services with their colocation offerings. The data center market landscape has evolved to include cloud computing/utility providers, application hosting providers and systems integrators, managed infrastructure hosting providers and colocation providers. More than 350 companies provide data center solutions in the U.S. operations upon conversionalone. Each of these data center solutions providers can bundle various colocation, interconnection and network offerings and outsourced IT infrastructure solutions. We are able to offer our customers a REIT.global platform that reaches 24 countries with proven operational reliability, improved application performance, network choice and a highly scalable set of offerings.
The $345.5 millionOur utilization rate represents the percentage of income tax expense recordedour cabinet space billing versus net sellable cabinet space available, taking into account power limitations. Our utilization rates were approximately 81%, as of December 31, 2018, and 80%, excluding the Verizon Data Center, Paris IBX Data Center, Itconic, Zenium data center and IO acquisitions, as of December 31, 2017. Excluding the impact of IBX data center expansion projects that have opened during the year endedlast 12 months, our utilization rate would have increased to approximately 83% as of December 31, 2014 was primarily attributable2018. Our cabinet utilization rate varies from market to market among our IBX data centers across the statutory tax rate change dueAmericas, EMEA and Asia-Pacific regions. We continue to monitor the available capacity in each of our REIT conversion, which resultedselected markets. To the extent we have limited capacity available in a $324.1 million domestic deferred tax assets write-off.given market, it may limit our ability for growth in that market. We perform demand studies on an ongoing basis to determine if future expansion is warranted in a market. In connection with the formal approvaladdition, power and cooling requirements for most customers are growing on a per unit basis. As a result, customers are consuming an increasing amount of our conversion to a REIT by our Board of Directors in December 2014,power per cabinet. Although we reassessed, in the fourth quarter of 2014, the deferred tax assets and liabilities of our U.S. operations to be included in the REIT structure. The reevaluation resulted in de-recognizing the deferred tax assets and liabilities of our REIT’s U.S. operations, excluding the deferred tax liabilities associated with the depreciation and amortization recapture expected in 2015. The de-recognition of the deferred tax assets and liabilities of our REIT’s U.S. operations occurred because the expected recovery or settlement of the related assets and liabilities will not result in deductible or taxable amounts in any post-REIT conversion periods. The deferred tax assets and liabilities associated with our foreign operations, regardless of whether such foreign operations were part of the REIT conversion, are not subject to the de-recognition assessment. We generally do not expectcontrol the amount of power our occasional salecustomers draw from installed circuits, we have negotiated power consumption limitations with certain high power-demand customers. This increased power consumption has driven us to build out our new IBX data centers to support power and cooling needs twice that of assetsprevious IBX data centers. We could face power limitations in our IBX data centers, even though we may have additional physical cabinet capacity available within a specific IBX data center. This could have a negative impact on the available utilization capacity of a given IBX data center, which could have a negative impact on our ability to resultgrow revenues, affecting our financial performance, operating results and cash flows.
Strategically, we will continue to look at attractive opportunities to grow our market share and selectively improve our footprint and offerings. As was the case with our recent expansions and acquisitions, our expansion criteria will be dependent on a number of factors, including but not limited to demand from new and existing customers, quality of the design, power capacity, access to networks, capacity availability in the current market location, amount of incremental investment required by us in the targeted property, lead-time to break even on a material tax liability.free cash flow basis and in-place customers. Like our recent expansions and acquisitions, the right combination of these factors may be attractive to us. Depending on the circumstances, these transactions may require additional capital expenditures funded by upfront cash payments or through long-term financing arrangements in order to bring these properties up to Equinix standards. Property expansion may be in the form of purchases of real property, long-term leasing arrangements or acquisitions. Future purchases, construction or acquisitions may be completed by us or with partners or potential customers to minimize the outlay of cash, which can be significant.

Our effective tax rates were 11.0%business is based on a recurring revenue model comprised of colocation and 407.7%, respectively,related interconnection and managed infrastructure offerings. We consider these offerings recurring because our customers are generally billed on a fixed and recurring basis each month for the duration of their contract, which is generally one to three years in length. Our recurring revenues have comprised more than 90% of our total revenues during the past three years. In addition, during any given quarter of the past three years, more than half of our monthly recurring revenue bookings came from existing customers, contributing to our revenue growth. Our largest customer accounted for approximately 3% of our recurring revenues for the years ended December 31, 20152018, 2017 and 2014.2016. Our effective tax rate50 largest customers accounted for the year ended December 31, 2014 was primarily due to tax expense attributable to the $324.1 million domestic deferred tax assets write-off as a resultapproximately 38%, 37% and 36%, respectively, of our REIT conversion. Excluding this tax expense, our effective tax rate would have been 25.2% for the year ended December 31, 2014. Due to our REIT conversion, we are entitled to a deduction for dividends paid, which results in a substantial reduction of U.S income tax expense. As a REIT, substantially all of our income tax expense is the foreign income tax incurred by our foreign subsidiaries and the U.S. income tax expense incurred by our U.S. TRSs.
We recorded excess income tax benefits of $30,000 and $18.6 million during the years ended December 31, 2015 and 2014, respectively, in our consolidated balance sheets.

Adjusted EBITDA. Adjusted EBITDA is a key factor in how we assess the operating performance of our segments and develop regional growth strategies such as IBX data center expansion decisions. We define adjusted EBITDA as income or loss from operations plus depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs and gain on asset sales. See "Non-GAAP Financial Measures" below for more information about adjusted EBITDA and a reconciliation of adjusted EBITDA to income or loss from operations. Our adjusted EBITDArecurring revenues for the years ended December 31, 20152018, 2017 and 2014 was split among2016.
Our non-recurring revenues are primarily comprised of installation services related to a customer's initial deployment and professional services we perform. These services are considered to be non-recurring because they are billed typically once, upon completion of the following geographic regions (dollarsinstallation or the professional services work performed. The majority of these non-recurring revenues are typically billed on the first invoice distributed to the customer in thousands):connection with their initial installation. However, revenues from installation services are deferred and recognized ratably over the period of contract term. Additionally, revenue from contract settlements, when a customer wishes to terminate their contract early, is generally treated as a contract modification and recognized ratably over the remaining term of the contract, if any. As a percentage of total revenues, we expect non-recurring revenues to represent less than 10% of total revenues for the foreseeable future.
 Years Ended December 31, % Change
 2015 % 2014 % Actual Constant Currency
Americas$698,604
 55% $635,007
 57% 10% 12%
EMEA318,561
 25% 269,222
 24% 18% 35%
Asia-Pacific254,462
 20% 209,662
 19% 21% 34%
Total$1,271,627
 100% $1,113,891
 100% 14% 22%
Americas Adjusted EBITDA. The increase in our Americas adjusted EBITDA was due to higher revenues as resultlargest components of our cost of revenues are depreciation, rental payments related to our leased IBX data centers, utility costs, including electricity, bandwidth access, IBX data center employees' salaries and benefits, including stock-based compensation, repairs and maintenance, supplies and equipment and security services. A majority of our cost of revenues is fixed in nature and should not vary significantly from period to period, unless we expand our existing IBX data centers or open or acquire new IBX data centers. However, there are certain costs that are considered more variable in nature, including utilities and supplies that are directly related to growth in our existing and new customer base. We expect the cost of our utilities, specifically electricity, will generally increase in the future on a per-unit or fixed basis, in addition to the variable increase related to the growth in consumption by our customers. In addition, the cost of electricity is generally higher in the summer months, as compared to other times of the year. To the extent we incur increased utility costs, such increased costs could materially impact our financial condition, results of operations and cash flows. Furthermore, to the extent we incur increased electricity costs as a result of either climate change policies or the physical effects of climate change, such increased costs could materially impact our financial condition, results of operations and cash flows. 
Sales and marketing expenses consist primarily of compensation and related costs for sales and marketing personnel, including stock-based compensation, amortization of contract costs, marketing programs, public relations, promotional materials and travel, as well as bad debt expense and amortization of customer relationship intangible assets.
General and administrative expenses consist primarily of salaries and related expenses, including stock-based compensation, accounting, legal and other professional service fees, and other general corporate expenses, such as our corporate regional headquarters office leases and some depreciation expense.
We expect our cost of revenues, sales and marketing expenses and general and administrative expenses to grow in absolute dollars in connection with our business growth. We may periodically see a higher cost of revenues as a percentage of revenue when a large expansion activityproject opens or is acquired, before it starts generating any meaningful revenue. Furthermore, in relation to cost of revenues, the Americas region has a lower cost of revenues as a percentage of revenue than either EMEA or Asia-Pacific. This is due to both the increased scale and organic growthmaturity of the Americas region, compared to either the EMEA or Asia-Pacific region, as described above, partially offset bywell as a higher adjusted operating expensescost structure outside of the Americas, particularly in EMEA. We expect the trend that the Americas having the lowest cost of revenues as a percentage of revenues primarily attributable to higher compensation and other headcount related expenses to support our growth. During the year ended December 31, 2015, currency fluctuations resulted in approximately $12.2 million of net unfavorable foreign currency impact on our Americas adjusted EBITDA primarily duecontinue. As a result, to the generally stronger U.S. dollar relative toextent that revenue growth outside the Brazilian real and Canadian dollar duringAmericas grows in greater proportion than revenue growth in the year ended December 31, 2015 compared to the year ended December 31, 2014.
EMEA Adjusted EBITDA. The increase inAmericas, our EMEA adjusted EBITDA was primarily due to higheroverall cost of revenues as a resultpercentage of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2015, currency fluctuations resulted in approximately $45.4 million of net unfavorable foreign currency impact on our EMEA adjusted EBITDA primarily due to the generally stronger U.S. dollar relative to the British pounds and Euro during the year ended December 31, 2015 compared to the year ended December 31, 2014.
Asia-Pacific Adjusted EBITDA. Therevenues may increase in our Asia-Pacific adjusted EBITDA was primarily due to higherfuture periods. Sales and marketing expenses may periodically increase as a percentage of revenues as we continue to scale our operations by investing in sales and marketing initiatives to further increase our revenue, including the hiring of additional headcount and new product innovations. General and administrative expenses may also periodically increase as a result of our IBX data center expansion activity and organic growth as described above, partially offset by higher adjusted operating expenses as percentagespercentage of revenues primarily attributableas we continue to higher compensation and other headcount related expenses and higher professional fees to supportgrow our growth. During the year ended December 31, 2015, currency fluctuations resulted in approximately $26.1 million of net unfavorable foreign currency impact on our Asia-Pacific adjusted EBITDA primarily due to the generally stronger U.S. dollar relative to the Australian dollar, Japanese yen and Singapore dollar during the year ended December 31, 2015 compared to the year ended December 31, 2014.business.
Non-GAAP Financial Measures
We provide all information required in accordance with generally accepted accounting principles (“GAAP”), but we believe that evaluating our ongoing operating results may be difficult if limited to reviewing only GAAP financial measures. Accordingly, we use non-GAAP financial measures to evaluate our operations.
Non-GAAP financial measures are not a substitute for financial information prepared in accordance with GAAP. Non-GAAP financial measures should not be considered in isolation, but should be considered together with the most directly comparable GAAP financial measures and the reconciliation of the non-GAAP financial measures to the most directly comparable GAAP financial measures. We have presented such non-GAAP financial measures to provide investors with an additional tool to evaluate our operating results in a manner that focuses on what management believes to be our core, ongoing business operations. We believe that the inclusion of these non-GAAP financial measures provides consistency and comparability with past reports and provides a better understanding of the overall performance of the business and ability to perform in subsequent periods. We believe that if we did not provide such non-GAAP financial information, investors would not have all the necessary data to analyze Equinix effectively.
Investors should note that the non-GAAP financial measures used by us may not be the same non-GAAP financial measures, and may not be calculated in the same manner, as those of other companies. Investors should therefore exercise caution when comparing non-GAAP financial measures used by us to similarly titled non-GAAP financial measures of other companies.
Our primary non-GAAP financial measures, adjusted EBITDA and adjusted funds from operations (“AFFO”), exclude depreciation expense as these charges primarily relate to the initial construction costs of our IBX data centers and do not reflect

our current or future cash spending levels to support our business. Our IBX data centers are long-lived assets and have an economic life greater than 10 years. The construction costs of an IBX data center do not recur with respect to such data center, although we may incur initial construction costs in future periods with respect to additional IBX data centers, and future capital expenditures remain minor relative to our initial investment. This is a trend we expect to continue. In addition, depreciation is also based on the estimated useful lives of our IBX data centers. These estimates could vary from actual performance of the asset, are based on historical costs incurred to build out our IBX data centers and are not indicative of current or expected future capital expenditures. Therefore, we exclude depreciation from our operating results when evaluating our operations.
In addition, in presenting adjusted EBITDA and AFFO, we exclude amortization expense related to acquired intangible assets. Amortization expense is significantly affected by the timing and magnitude of our acquisitions and these charges may vary in amount from period to period. We exclude amortization expense to facilitate a more meaningful evaluation of our current operating performance and comparisons to our prior periods. We exclude accretion expense, both as it relates to asset retirement obligations as well as accrued restructuring charge liabilities, as these expenses represent costs which we believe are not meaningful in evaluating our current operations. We exclude stock-based compensation expense, as it can vary significantly from period to period based on share price, the timing, size and nature of equity awards. As such, we, and many investors and analysts, exclude this stock-based compensation expense to compare our operating results with those of other companies. We also exclude restructuring charges. The restructuring charges relate to our decisions to exit leases for excess space adjacent to several of our IBX data centers, which we did not intend to build out, or our decision to reverse such restructuring charges. We also exclude impairment charges related to certain long-lived assets. The impairment charges are related to expense recognized whenever events or changes in circumstances indicate that the carrying amount of long-lived assets are not recoverable. We also exclude gains on asset sales as it represents profit that is not meaningful in evaluating the current or future operating performance. Finally, we exclude acquisition costs from AFFO and adjusted EBITDA to allow more comparable comparisons of our financial results to our historical operations. The acquisition costs relate to costs we incur in connection with business combinations. Such charges generally are not relevant to assessing the long-term performance of the company. In addition, the frequency and amount of such charges vary significantly based on the size and timing of the acquisitions. Management believes items such as restructuring charges, impairment charges, gains on asset sales and acquisition costs are non-core transactions; however, these types of costs may occur in future periods.
Adjusted EBITDA
We define adjusted EBITDA as income or loss from operations plus depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs, and gain on asset sales as presented below (in thousands):
 Years Ended December 31,
 2016 2015 2014
Income from operations$618,739
 $567,342
 $509,266
Depreciation, amortization, and accretion expense843,510
 528,929
 484,129
Stock-based compensation expense156,148
 133,633
 117,990
Acquisition costs64,195
 41,723
 2,506
Impairment charges7,698
 
 
Gain on asset sales(32,816) 
 
Adjusted EBITDA$1,657,474
 $1,271,627
 $1,113,891
Our adjusted EBITDA results have improved each year and in each region in total dollars due to the improved operating results discussed earlier in “Results of Operations”, as well as the nature of our business model consisting of a recurring revenue stream and a cost structure which has a large base that is fixed in nature also discussed earlier in “Overview”.
Funds from Operations (“FFO”) and AFFO
We use FFO and AFFO, which are non-GAAP financial measures commonly used in the REIT industry. FFO is calculated in accordance with the standards established by the National Association of Real Estate Investment Trusts (“NAREIT”). FFO represents net income (loss), excluding gain (loss) from the disposition of real estate assets, depreciation and amortization on real estate assets and adjustments for unconsolidated joint ventures’ and non-controlling interests’ share of these items.
We use AFFO to evaluate our performance on a consolidated basis and as a metric in the determination of employees’ annual bonuses beginning in 2015 and vesting of restricted stock units that were granted beginning in 2015 and that have both service and performance conditions. In presenting AFFO, we exclude certain items that we believe are not good indicators of our current or future operating performance. AFFO represents FFO excluding depreciation and amortization expense on non-real estate assets,

accretion, stock-based compensation, restructuring charges, impairment charges, acquisition costs, an installation revenue adjustment, a straight-line rent expense adjustment, amortization of deferred financing costs, gain (loss) on debt extinguishment, an income tax expense adjustment, recurring capital expenditures and adjustments for unconsolidated joint ventures' and noncontrolling interests’ share of these items, gain on asset sales and net income (loss) from discontinued operations, net of tax. The adjustments for both installation revenue and straight-line rent expense are intended to isolate the cash activity included within the straight-lined or amortized results in the consolidated statement of operations. We exclude the amortization of deferred financing costs as these expenses relate to the initial costs incurred in connection with debt financings that have no current or future cash obligations. We exclude gain (loss) on debt extinguishment since it generally represents the write-off of initial costs incurred in connection with debt financings or a cost that is incurred to reduce future interest costs and is not a good indicator of our current or future operating performance. We include an income tax expense adjustment, which represents the non-cash tax impact due to changes in valuation allowances, uncertain tax positions and deferred taxes that do not relate to current period’s operations. We deduct recurring capital expenditures, which represent expenditures to extend the useful life of its IBX centers or other assets that are required to support current revenues. We also exclude net income (loss) from discontinued operations, net of tax, which represents results that may not recur and are not a good indicator of our current future operating performance.

Our FFO and AFFO were as follows (in thousands):
 Years Ended December 31,
 2016 2015 2014
Net income (loss)$126,800
 $187,774
 $(260,726)
Net loss attributable to redeemable non-controlling interests
 
 1,179
Net income (loss) attributable to Equinix126,800
 187,774
 (259,547)
Adjustments:     
Real estate depreciation and amortization626,564
 439,969
 417,703
(Gain) loss on disposition of real estate property(28,388) 1,382
 301
Adjustments for FFO from unconsolidated joint ventures113
 113
 112
Non-controlling interests' share of above adjustments
 
 (5,303)
NAREIT FFO attributable to common stockholders$725,089
 $629,238
 $153,266
 Years Ended December 31,
 2016 2015 2014
NAREIT FFO attributable to common stockholders$725,089
 $629,238
 $153,266
Adjustments:     
Installation revenue adjustment20,161
 35,498
 25,720
Straight-line rent expense adjustment7,700
 7,931
 13,048
Amortization of deferred financing costs18,696
 16,135
 19,020
Stock-based compensation expense156,149
 133,633
 117,990
Non-real estate depreciation expense87,781
 58,165
 36,232
Amortization expense122,862
 27,446
 27,756
Accretion expense6,303
 3,349
 2,438
Recurring capital expenditures(141,819) (120,281) (105,366)
Loss on debt extinguishment12,276
 289
 156,990
Acquisition costs64,195
 41,723
 2,506
Impairment charges7,698
 
 
Net income from discontinued operations, net of tax(12,392) 
 
Income tax expense adjustment3,680
 (1,270) 315,289
Adjustments for AFFO from unconsolidated joint ventures(40) (58) (76)
Non-controlling interests' share of above adjustments
 
 (3,134)
AFFO$1,078,339
 $831,798
 $761,679
Our AFFO results have improved due to the improved operating results discussed earlier in “Results of Operations,” as well as due to the nature of our business model which consists of a recurring revenue stream and a cost structure which has a large base that is fixed in nature as discussed earlier in “Overview.”
Constant Currency Presentation
Our revenues and certain operating expenses (cost of revenues, sales and marketing and general and administrative expenses) from our international operations have represented and will continue to represent a significant portion of our total revenues and certain operating expenses. As a result, our revenues and certain operating expenses have been and will continue to be affected by changes in the U.S. dollar against major international currencies such as the Euro, British pound, Japanese yen, Singapore dollar, Australian dollar and Brazilian real. In order to provide a framework for assessing how each of our business segments performed excluding the impact of foreign currency fluctuations, we present period-over-period percentage changes in our revenues and certain operating expenses on a constant currency basis in addition to the historical amounts as reported. Presenting constant currency results of operations is a non-GAAP financial measure and is not meant to be considered in isolation or as an alternative to GAAP results of operations. However, we have presented this non-GAAP financial measure to provide investors with an additional tool to evaluate our operating results. To present this information, our current and comparative prior period revenues

and certain operating expenses from entities reporting in currencies other than the U.S. dollar are converted into U.S. dollars at constant exchange rates rather than the actual exchange rates in effect during the respective periods (i.e. average rates in effect for the year ended December 31, 2015 are used as exchange rates for the year ended December 31, 2016 when comparing the year ended December 31, 2016 with the year ended December 31, 2015, and average rates in effect for the year ended December 31, 2014 are used as exchange rates for the year ended December 31, 2015 when comparing the year ended December 31, 2015 with the year ended December 31, 2014).
Liquidity and Capital Resources
Contractual Obligations and Off-Balance-Sheet Arrangements
Critical Accounting Policies and Estimates
Recent Accounting Pronouncements
In 2018, as more fully described in Note 12 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we sold 930,934 shares of our common stock for approximately $388.2 million, net of payment of commissions to the sales agents and estimated equity offering costs under our ATM program launched in 2017 (the "2017 ATM Program"). As of December 31, 2018, no shares remained available for sale under the 2017 ATM Program. In December 2018, we launched another ATM program, under which we may offer and sell from time to time up to an aggregate of $750.0 million of our common stock in "at the market" transactions (the "2018 ATM Program"). As of December 31, 2018, no sales have been made under the 2018 ATM Program.
In July 2018, as more fully described in Note 11 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we entered into an amendment to our existing credit agreement to add a senior unsecured term loan in an aggregate principal amount of ¥47.5 billion (the "JPY Term Loan"). Concurrent with the closing of our JPY Term Loan, we drew down the full ¥47.5 billion of the JPY Term Loan, or approximately $424.7 million, and prepaid the remaining principal of our existing Japanese Yen Term Loan of ¥43.8 billion, or approximately $391.3 million. We recognized a loss on debt extinguishment of $2.2 million during the third quarter of 2018 in connection therewith.
In April 2018, as more fully described in Note 3 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we completed the acquisition of Metronode for a cash purchase price of A$1.034 billion or approximately $804.6 million at the exchange rate in effect on April 18, 2018 (the "Metronode Acquisition"). We accounted for this transaction as a business combination using the acquisition method of accounting. The valuation and purchase accounting of this acquisition have not yet been finalized as of December 31, 2018.
In April 2018, as more fully described in Note 3 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we completed the acquisition of Infomart Dallas for total consideration of approximately $804.0 million (the "Infomart Dallas Acquisition"), consisting of approximately $45.8 million in cash, subject to customary adjustments, and $758.2 million aggregate fair value of 5.000% senior unsecured notes. We accounted for this transaction as a business combination using the acquisition method of accounting. The valuation and purchase accounting of this acquisition have not yet been finalized as of December 31, 2018.
In March 2018, as more fully described in Note 11 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we issued €750.0 million, or approximately $929.9 million in U.S. dollars, at the exchange rate in effect on March 14, 2018, aggregate principal amount of 2.875% senior notes due March 15, 2024. We incurred debt issuance costs of $11.6 million related to the 2.875% Euro Senior Notes due 2024.


Overview
Equinix provides global data center offerings that protect and connect the world's most valued information assets. Global enterprises, financial services companies and content and network service providers rely upon Equinix's leading insight and data centers around the world for the safehousing of their critical IT equipment and the ability to directly connect to the networks that enable today's information-driven economy. The acquisitions of Infomart Dallas and Metronode expanded our total global footprint to 200 IBX data centers across 52 markets around the world. Equinix offers the following solutions: (i) premium data center colocation, (ii) interconnection and exchange and (iii) outsourced IT infrastructure solutions. As of December 31, 2018, we operated or had partner IBX data centers in Brazil, Canada, Colombia and throughout the U.S. in the Americas region; Bulgaria, Finland, France, Germany, Ireland, Italy, the Netherlands, Poland, Portugal, Spain, Sweden, Switzerland, Turkey, the United Arab Emirates and the United Kingdom in the EMEA region; and Australia, China, Hong Kong, Indonesia, Japan and Singapore in the Asia-Pacific region.

 Our data centers in 52 markets around the world are a global platform, which allows our customers to increase information and application delivery performance while significantly reducing costs. This global platform and the quality of our IBX data centers have enabled us to establish a critical mass of customers. As more customers choose our IBX data centers, it benefits their suppliers and business partners to colocate with us as well, in order to gain the full economic and performance benefits of our offerings. These partners, in turn, pull in their business partners, creating a "marketplace" for their services. Our global platform enables scalable, reliable and cost-effective colocation, interconnection and traffic exchange that lowers overall cost and increases flexibility. Our focused business model is built on our critical mass of customers and the resulting "marketplace" effect. This global platform, combined with our strong financial position, continues to drive new customer growth and bookings.

Historically, our market has been served by large telecommunications carriers who have bundled telecommunications products and services with their colocation offerings. The data center market landscape has evolved to include cloud computing/utility providers, application hosting providers and systems integrators, managed infrastructure hosting providers and colocation providers. More than 350 companies provide data center solutions in the U.S. alone. Each of these data center solutions providers can bundle various colocation, interconnection and network offerings and outsourced IT infrastructure solutions. We are able to offer our customers a global platform that reaches 24 countries with proven operational reliability, improved application performance, network choice and a highly scalable set of offerings.
Our utilization rate represents the percentage of our cabinet space billing versus net sellable cabinet space available, taking into account power limitations. Our utilization rates were approximately 81%, as of December 31, 2018, and 80%, excluding the Verizon Data Center, Paris IBX Data Center, Itconic, Zenium data center and IO acquisitions, as of December 31, 2017. Excluding the impact of IBX data center expansion projects that have opened during the last 12 months, our utilization rate would have increased to approximately 83% as of December 31, 2018. Our cabinet utilization rate varies from market to market among our IBX data centers across the Americas, EMEA and Asia-Pacific regions. We continue to monitor the available capacity in each of our selected markets. To the extent we have limited capacity available in a given market, it may limit our ability for growth in that market. We perform demand studies on an ongoing basis to determine if future expansion is warranted in a market. In addition, power and cooling requirements for most customers are growing on a per unit basis. As a result, customers are consuming an increasing amount of power per cabinet. Although we generally do not control the amount of power our customers draw from installed circuits, we have negotiated power consumption limitations with certain high power-demand customers. This increased power consumption has driven us to build out our new IBX data centers to support power and cooling needs twice that of previous IBX data centers. We could face power limitations in our IBX data centers, even though we may have additional physical cabinet capacity available within a specific IBX data center. This could have a negative impact on the available utilization capacity of a given IBX data center, which could have a negative impact on our ability to grow revenues, affecting our financial performance, operating results and cash flows.
Strategically, we will continue to look at attractive opportunities to grow our market share and selectively improve our footprint and offerings. As was the case with our recent expansions and acquisitions, our expansion criteria will be dependent on a number of factors, including but not limited to demand from new and existing customers, quality of the design, power capacity, access to networks, capacity availability in the current market location, amount of incremental investment required by us in the targeted property, lead-time to break even on a free cash flow basis and in-place customers. Like our recent expansions and acquisitions, the right combination of these factors may be attractive to us. Depending on the circumstances, these transactions may require additional capital expenditures funded by upfront cash payments or through long-term financing arrangements in order to bring these properties up to Equinix standards. Property expansion may be in the form of purchases of real property, long-term leasing arrangements or acquisitions. Future purchases, construction or acquisitions may be completed by us or with partners or potential customers to minimize the outlay of cash, which can be significant.

Our business is based on a recurring revenue model comprised of colocation and related interconnection and managed infrastructure offerings. We consider these offerings recurring because our customers are generally billed on a fixed and recurring basis each month for the duration of their contract, which is generally one to three years in length. Our recurring revenues have comprised more than 90% of our total revenues during the past three years. In addition, during any given quarter of the past three years, more than half of our monthly recurring revenue bookings came from existing customers, contributing to our revenue growth. Our largest customer accounted for approximately 3% of our recurring revenues for the years ended December 31, 2018, 2017 and 2016. Our 50 largest customers accounted for approximately 38%, 37% and 36%, respectively, of our recurring revenues for the years ended December 31, 2018, 2017 and 2016.
Our non-recurring revenues are primarily comprised of installation services related to a customer's initial deployment and professional services we perform. These services are considered to be non-recurring because they are billed typically once, upon completion of the installation or the professional services work performed. The majority of these non-recurring revenues are typically billed on the first invoice distributed to the customer in connection with their initial installation. However, revenues from installation services are deferred and recognized ratably over the period of contract term. Additionally, revenue from contract settlements, when a customer wishes to terminate their contract early, is generally treated as a contract modification and recognized ratably over the remaining term of the contract, if any. As a percentage of total revenues, we expect non-recurring revenues to represent less than 10% of total revenues for the foreseeable future.
The largest components of our cost of revenues are depreciation, rental payments related to our leased IBX data centers, utility costs, including electricity, bandwidth access, IBX data center employees' salaries and benefits, including stock-based compensation, repairs and maintenance, supplies and equipment and security services. A majority of our cost of revenues is fixed in nature and should not vary significantly from period to period, unless we expand our existing IBX data centers or open or acquire new IBX data centers. However, there are certain costs that are considered more variable in nature, including utilities and supplies that are directly related to growth in our existing and new customer base. We expect the cost of our utilities, specifically electricity, will generally increase in the future on a per-unit or fixed basis, in addition to the variable increase related to the growth in consumption by our customers. In addition, the cost of electricity is generally higher in the summer months, as compared to other times of the year. To the extent we incur increased utility costs, such increased costs could materially impact our financial condition, results of operations and cash flows. Furthermore, to the extent we incur increased electricity costs as a result of either climate change policies or the physical effects of climate change, such increased costs could materially impact our financial condition, results of operations and cash flows. 
Sales and marketing expenses consist primarily of compensation and related costs for sales and marketing personnel, including stock-based compensation, amortization of contract costs, marketing programs, public relations, promotional materials and travel, as well as bad debt expense and amortization of customer relationship intangible assets.
General and administrative expenses consist primarily of salaries and related expenses, including stock-based compensation, accounting, legal and other professional service fees, and other general corporate expenses, such as our corporate regional headquarters office leases and some depreciation expense.
We expect our cost of revenues, sales and marketing expenses and general and administrative expenses to grow in absolute dollars in connection with our business growth. We may periodically see a higher cost of revenues as a percentage of revenue when a large expansion project opens or is acquired, before it starts generating any meaningful revenue. Furthermore, in relation to cost of revenues, the Americas region has a lower cost of revenues as a percentage of revenue than either EMEA or Asia-Pacific. This is due to both the increased scale and maturity of the Americas region, compared to either the EMEA or Asia-Pacific region, as well as a higher cost structure outside of the Americas, particularly in EMEA. We expect the trend that the Americas having the lowest cost of revenues as a percentage of revenues to continue. As a result, to the extent that revenue growth outside the Americas grows in greater proportion than revenue growth in the Americas, our overall cost of revenues as a percentage of revenues may increase in future periods. Sales and marketing expenses may periodically increase as a percentage of revenues as we continue to scale our operations by investing in sales and marketing initiatives to further increase our revenue, including the hiring of additional headcount and new product innovations. General and administrative expenses may also periodically increase as a percentage of revenues as we continue to grow our business.
Taxation as a REIT
We elected to be taxed as a REIT for federal income tax purposes beginning with our 2015 taxable year. As of December 31, 2018, our REIT structure included all of our data center operations in the U.S., Canada, Japan, and the data center operations in EMEA with the exception of Bulgaria, United Arab Emirates and a portion of Turkey. Our data center operations in other jurisdictions are operated as TRSs.

As a REIT, we generally are permitted to deduct from our federal taxable income the dividends we pay to our stockholders (including, for this purpose, the value of any deemed distributions attributable to anti-dilution adjustments made with respect to our 4.75% convertible subordinated notes prior to their maturity in 2016). The income represented by such dividends is not subject to federal income tax at the entity level but is taxed, if at all, at the stockholder level. Nevertheless, the income of our TRSs which hold our U.S. operations that may not be REIT compliant is subject, as applicable, to federal and state corporate income tax. Likewise, our foreign subsidiaries continue to be subject to foreign income taxes in jurisdictions in which they hold assets or conduct operations, regardless of whether held or conducted through TRSs or through QRSs. We are also subject to a separate corporate income tax on any gain recognized from a sale of a REIT asset where our basis in the asset is determined by reference to the basis of the asset in the hands of a C corporation (such as (i) an asset that we held as of the effective date of our REIT election, that is, January 1, 2015, or (ii) an asset held by us or a QRS following the liquidation or other conversion of a former TRS). This built-in-gains tax is generally applicable to any disposition of such an asset during the five-year period after the date we first owned the asset as a REIT asset (e.g., January 1, 2015 in the case of REIT assets we held at the time of our REIT conversion), to the extent of the built-in-gain based on the fair market value of such asset on the date we first held the asset as a REIT asset. If we fail to remain qualified for federal income tax as a REIT, we will be subject to federal income tax at regular corporate tax rates. Even if we remain qualified for federal income tax as a REIT, we may be subject to some federal, state, local and foreign taxes on our income and property in addition to taxes owed with respect to our TRSs' operations. In particular, while state income tax regimes often parallel the federal income tax regime for REITs, many states do not completely follow federal rules and some may not follow them at all.
On each of March 21, June 20, September 19, and December 12, 2018, we paid quarterly cash dividends of $2.28 per share. We expect these quarterly and other applicable distributions to equal or exceed the REIT taxable income that we recognized in 2018.
On December 22, 2017, the United States enacted legislation commonly referred to as the Tax Cuts and Jobs Act ("TCJA") which amended U.S. federal income tax laws. The TCJA retained the REIT regime but contained many significant changes that impact a REIT's taxable income subject to distribution, particularly a REIT with global operations. As of the end of 2018, we have finalized the analysis of the major tax impact to our business by the new tax legislation. Based on our current assessment, which is subject to further interpretation and guidance on the new tax legislation, we believe that we can continue to meet all the REIT compliance requirements in the foreseeable future and that the TCJA changes are not expected to meaningfully increase our tax liabilities in the U.S. because we expect to fully distribute our REIT taxable income.
We continue to monitor our REIT compliance in order to maintain our qualification for federal income tax as a REIT. For this and other reasons, as necessary, we may convert some of our data center operations in other countries into the REIT structure in future periods.
Results of Operations
Our results of operations for the year ended December 31, 2018 include the results of operations from the Metronode Acquisition from April 18, 2018 and the Infomart Dallas Acquisition from April 2, 2018. Our results of operations for the year ended December 31, 2017 include the results of operations of the IO Acquisition from February 3, 2017, the Verizon Data Center Acquisition from May 1, 2017, the Zenium data center acquisition from October 6, 2017 and the Itconic Acquisition from October 9, 2017. Our results of operations for the year ended December 31, 2016 include the results of operations of TelecityGroup from January 15, 2016 and the Paris IBX Data Center Acquisition from August 1, 2016.
In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers ("ASU 2014-09") and issued subsequent amendments to the initial guidance, collectively referred as "Topic 606." On January 1, 2018, as more fully described in Note 1 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we adopted Topic 606. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while the comparative information has not been restated and continues to be reported under accounting standards in effect for those periods. Under the new standard, we recognize installation revenue over the contract period rather than over the estimated installation life as under the prior revenue standard. We also capitalize and amortize certain costs to obtain contracts, rather than expense them immediately as under the previous standard.
Discontinued Operations
We present the results of operations associated with the TelecityGroup data centers that were divested in July 2016 as discontinued operations in our consolidated statement of operations for the year ended December 31, 2016. We did not have any discontinued operations activity during 2018 or 2017.

Years ended December 31, 2018 and 2017
Revenues.    Our revenues for the years ended December 31, 2018 and 2017 were generated from the following revenue classifications and geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas:           
Recurring revenues$2,357,326
 46% $2,062,352
 47% 14% 15%
Non-recurring revenues127,408
 3% 110,408
 3% 15% 16%
 2,484,734
 49% 2,172,760
 50% 14% 15%
EMEA:           
Recurring revenues1,467,492
 29% 1,266,971
 29% 16% 12%
Non-recurring revenues95,145
 2% 79,285
 2% 20% 16%
 1,562,637
 31% 1,346,256
 31% 16% 12%
Asia-Pacific:           
Recurring revenues951,684
 19% 790,797
 18% 20% 19%
Non-recurring revenues72,599
 1% 58,615
 1% 24% 23%
 1,024,283
 20% 849,412
 19% 21% 20%
Total:           
Recurring revenues4,776,502
 94% 4,120,120
 94% 16% 15%
Non-recurring revenues295,152
 6% 248,308
 6% 19% 18%
 $5,071,654
 100% $4,368,428
 100% 16% 15%
Americas Revenues. Revenues for our Americas region for the year ended December 31, 2018 included approximately $210.2 million of incremental revenues from the Verizon Data Center Acquisition, which closed in May 2017, and the Infomart Dallas Acquisition, which closed in April 2018. During both the years ended December 31, 2018 and 2017, our revenues from the United States, the largest revenue contributor in the Americas region for the periods, represented approximately 91% of the regional revenues. Excluding incremental revenues attributable to the Infomart Dallas and Verizon Data Center Acquisitions, growth in Americas revenues was primarily due to (i) $69.3 million of revenues generated from our recently-opened IBX data centers or IBX data center expansions in the Chicago, Culpeper, Denver, Houston, Miami, Rio de Janeiro, São Paulo, Seattle, Silicon Valley, and Washington, D.C. areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2018, the U.S. dollar was generally stronger relative to the Brazilian real than during the year ended December 31, 2017, resulting in approximately $23.6 million of unfavorable foreign currency impact on our Americas revenues during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
EMEA Revenues.  Revenues for our EMEA region for the year ended December 31, 2018 included approximately $52.6 million of incremental revenues from the IO Acquisition, which closed in February 2017, and the Itconic and Zenium data center acquisitions, which closed in October 2017. Our revenues from the U.K., our largest revenue contributor in the EMEA region, represented 30% of regional revenues for both the years ended December 31, 2018 and 2017. Excluding incremental revenues attributable to the IO, Itconic, and Zenium acquisitions, our EMEA revenue growth was primarily due to (i) approximately $73.2 million of revenues from our recently-opened IBX data centers or IBX data center expansions in the Amsterdam, Frankfurt, London and Paris metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $54.4 million of net favorable foreign currency impact to our EMEA revenues primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017.
Asia-Pacific Revenues.  Revenues for our Asia-Pacific region for the year ended December 31, 2018 included approximately $48.0 million of incremental revenues from the Metronode Acquisition, which closed in April 2018. Our revenues from Japan and Singapore, the largest revenue contributors in the Asia-Pacific region for the period, combined represented approximately 60% and 63% for the years ended December 31, 2018 and 2017, respectively. Excluding incremental revenues attributable to the Metronode Acquisition, our Asia-Pacific revenue growth was primarily due to (i) approximately $59.2 million of revenues generated from our recently-opened IBX data center expansions in the Hong Kong, Melbourne, Osaka, and Singapore metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31,

2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately $7.7 million of net favorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
Cost of Revenues.  Our cost of revenues for the years ended December 31, 2018 and 2017 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$1,113,854
 43% $958,845
 44% 16% 18%
EMEA916,751
 35% 749,933
 34% 22% 18%
Asia-Pacific574,870
 22% 484,371
 22% 19% 18%
Total$2,605,475
 100% $2,193,149
 100% 19% 18%
  Years Ended December 31,
  2018 2017
Cost of revenues as a percentage of revenues:    
Americas 45% 44%
EMEA 59% 56%
Asia-Pacific 56% 57%
Total 51% 50%
Americas Cost of Revenues. Cost of revenues for our Americas region for the year ended December 31, 2018 included approximately $115.4 million of incremental cost of revenues from the Verizon Data Center Acquisition and the Infomart Dallas Acquisition. Excluding the impact from these acquisitions, the increase in our Americas cost of revenues for the year ended December 31, 2018 compared to the year ended December 31, 2017 was primarily due to (i) $10.6 million higher depreciation expense primarily due to our IBX data center expansion activity; (ii) $7.6 million of higher taxes, licenses, insurance, and other cost of sales in support of our business growth; (iii) $5.8 million of higher rent and facility costs due to new fuel cell leases and IBX growth  and (iv) $15.5 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and higher headcount growth (1,399 Americas cost of revenues employees as of December 31, 2018 versus 1,339 as of December 31, 2017). During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $15.1 million of net favorable foreign currency impact to our Americas cost of revenues primarily due to a generally stronger U.S. dollar relative to the Brazilian real during the year ended December 31, 2018 compared to the year ended December 31, 2017. We expect our Americas cost of revenues to increase as we continue to grow our business, including results from recent acquisitions.
EMEA Cost of Revenues. Cost of revenues for our EMEA region for the year ended December 31, 2018 included $41.5 million of incremental cost of revenues from the IO, Itconic, and Zenium acquisitions. Excluding incremental cost of revenues attributable to these acquisitions, the increase in our EMEA cost of revenues was primarily due to (i) $47.3 million of higher utilities costs driven by IBX expansions, increased usage and price increases; (ii) $18.4 million of higher office expenses, rent and facility costs, and repair and maintenance primarily due to an increase in expansion activity and usage due to our business growth; (iii) $49.3 million of higher depreciation and accretion expenses, primarily driven by expansion activity in Amsterdam, Frankfurt, London, and Paris and (iv) $19.7 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and higher headcount growth (1,490 EMEA cost of revenues employees as of December 31, 2018 versus 1,375 as of December 31, 2017), partially offset by an $11.8 million reduction in other cost of sales, primarily due to realized cash flow hedge gains. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $30.0 million of net unfavorable foreign currency impact to our EMEA cost of revenues, primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017. We expect EMEA cost of revenues to increase as we continue to grow our business.
Asia-Pacific Cost of Revenues. Cost of revenues for our Asia-Pacific region for the year ended December 31, 2018 included approximately $33.2 million incremental cost of revenues from the Metronode Acquisition. Excluding the impact from the Metronode Acquisition, the increase in our Asia-Pacific cost of revenues for the year ended December 31, 2018 was primarily due to (i) $28.4 million of higher utilities costs, rent and facility costs and repairs and maintenance expense, primarily driven by higher usage in Australia, Hong Kong, Japan and Singapore; (ii) $16.1 million of higher depreciation and accretion expense, primarily from IBX expansions in Australia, Hong Kong, Japan and Singapore; (iii) $9.7 million of higher other cost of sales, primarily due

to custom service orders, and (iv) $3.9 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and headcount growth (884 Asia-Pacific cost of revenues employees as of December 31, 2018 versus 828 as of December 31, 2017). During the year ended December 31, 2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately $3.3 million of net unfavorable foreign currency impact to our Asia-Pacific cost of revenues in 2018. We expect Asia-Pacific cost of revenues to increase as we continue to grow our business, including the impact from the Metronode acquisition.
Sales and Marketing Expenses. Our sales and marketing expenses for the years ended December 31, 2018 and 2017 were split among the following geographic regions (dollars in thousands):
 Years ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$391,386
 62% $349,666
 60% 12% 13%
EMEA152,336
 24% 153,811
 26% (1)% (4)%
Asia-Pacific89,980
 14% 78,247
 14% 15% 14%
Total$633,702
 100% $581,724
 100% 9% 8%
 Years Ended December 31,
 2018 2017
Sales and marketing expenses as a percentage of revenues:   
Americas16% 16%
EMEA10% 11%
Asia-Pacific9% 9%
Total12% 13%
Americas Sales and Marketing Expenses. The increase in our Americas sales and marketing expenses was primarily due to (i) $38.1 million of amortization of the acquired intangible assets in connection with the Verizon Data Center Acquisition and (ii) $5.4 million of higher consulting expenses to support our growth. During the year ended December 31, 2018, the impact of foreign currency fluctuations to our Americas sales and marketing expenses was not significant when compared to average exchange rates during the year ended December 31, 2017. We anticipate that we will continue to invest in Americas sales and marketing initiatives and expect our Americas sales and marketing expenses to continue to increase as we continue to grow our business, including the impact from recent acquisitions.
EMEA Sales and Marketing Expenses. Our EMEA sales and marketing expense did not materially change during the year ended December 31, 2018 as compared to the year ended December 31, 2017. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $4.8 million of net unfavorable foreign currency impact to our EMEA sales and marketing expenses primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017. Over the past several years, we have been investing in our EMEA sales and marketing initiatives to further increase our revenues. We expect our EMEA sales and marketing expenses to continue to increase as we continue to grow our business.
Asia-Pacific Sales and Marketing Expenses. The increase in our Asia-Pacific sales and marketing expense is primarily due to (i) $4.1 million of amortization of the acquired intangible assets in connection with the Metronode Acquisition; (ii) $4.1 million of higher compensation costs, including sales compensation, general salaries, bonuses and stock-based compensation and headcount growth (306 Asia-Pacific sales and marketing employees as of December 31, 2018, versus 278 as of December 31, 2017) and (iii) $4.4 million of higher bad debt expense, primarily due to customer recovery in the prior year. For the year ended December 31, 2018, the impact of foreign currency fluctuations to our Asia-Pacific sales and marketing expenses was not significant when compared to average exchange rates for the year ended December 31, 2017. Over the past several years, we have been investing in our Asia-Pacific sales and marketing initiatives and expect our Asia-Pacific sales and marketing expenses to continue to increase as we continue to grow our business, including the impact from the Metronode acquisition.

General and Administrative Expenses. Our general and administrative expenses for the years ended December 31, 2018 and 2017 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$554,169
 67% $472,942
 63% 17% 18%
EMEA184,364
 22% 195,430
 26% (6)% (8)%
Asia-Pacific88,161
 11% 77,534
 11% 14% 12%
Total$826,694
 100% $745,906
 100% 11% 10%
 Years Ended December 31,
 2018 2017
General and Administrative expenses as a percentage of revenues:   
Americas22% 22%
EMEA12% 15%
Asia-Pacific9% 9%
Total16% 17%
Americas General and Administrative Expenses. The increase in our Americas general and administrative expenses was primarily due to (i) $25.8 million of higher compensation costs, including general salaries, bonuses, stock-based compensation, and headcount growth (1,389 Americas general and administrative employees as of December 31, 2018 versus 1,207 as of December 31, 2017); (ii) $18.1 million of higher office, rent and facilities costs and consulting expenses in support of our business growth; (iii) $3.8 million of higher recruiting, training, and travel expenses to support employee development and (iv) $30.2 million of higher depreciation expense associated with the implementation of certain systems, including revenue, data management and cloud exchange systems, to improve our quote to order and billing processes and to support the integration and growth of our business. During the year ended December 31, 2018, the impact of foreign currency fluctuations to our Americas general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2017. Over the course of the past year, we have been investing in our Americas general and administrative functions to scale our business effectively for growth, which has included additional investments in improving our back office systems. We expect our current efforts to improve our back office systems will continue over the next several years. Going forward, although we are carefully monitoring our spending, we expect Americas general and administrative expenses to increase as we continue to further scale our operations to support our growth, including these investments in our back office systems, investments to maintain our qualification for taxation as a REIT and recent acquisitions and to comply with new accounting standards.
EMEA General and Administrative Expenses. The decrease in our EMEA general and administrative expenses was primarily due to (i) $23.1 million of lower amortization expense as a result of fully amortizing the TelecityGroup trade names during the third quarter of 2017; (ii) $5.2 million decrease due to realized cash flow hedge gains and (iii) $5.1 million lower outside services consulting expense, partially offset by an increase of $19.6 million of compensation expenses, including general salaries, bonuses, and stock-based compensation and headcount growth (830 EMEA general and administrative employees as of December 31, 2018 versus 807 as of December 31, 2017). During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $5.2 million of net unfavorable foreign currency impact to our EMEA general and administrative expenses primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017. Over the course of the past year, we have been investing in our EMEA general and administrative functions as a result of our ongoing efforts to scale this region effectively for growth. Going forward, although we are carefully monitoring our spending, we expect our EMEA general and administrative expenses to increase in future periods as we continue to scale our operations to support our growth.
Asia-Pacific General and Administrative Expenses. The increase in our Asia-Pacific general and administrative expense was primarily due to $9.7 million of higher compensation costs, including general salaries, bonuses, stock-based compensation and headcount growth (482 Asia-Pacific general and administrative employees as of December 31, 2018 versus 453 as of December 31, 2017). For the year ended December 31, 2018, the impact of foreign currency fluctuations on our Asia-Pacific general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2017. Going forward, although we are carefully monitoring our spending, we expect Asia-Pacific general and administrative expenses to increase as we continue to support our growth, including the impact from the Metronode acquisition.

Acquisition Costs.  During the year ended December 31, 2018, we recorded acquisition costs totaling $34.4 million primarily in the Asia-Pacific and Americas regions, due to our acquisitions of Metronode and Infomart Dallas. During the year ended December 31, 2017, we recorded acquisition costs totaling $38.6 million, primarily in the Americas region, due to the Verizon Data Center Acquisition.
Impairment Charges. We did not have impairment charges during the years ended December 31, 2018 and 2017.
Gain on Asset Sales. During the year ended December 31, 2018, we recorded a gain on asset sales of $6.0 million primarily relating to the sale of a data center in Frankfurt. We did not have any gain on asset sales during the year ended December 31, 2017.
Income from Operations. Our income from operations for the years ended December 31, 2018 and 2017 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$412,610
 42% $363,220
 45% 14% 15%
EMEA312,163
 32% 237,854
 29% 31% 25%
Asia-Pacific252,610
 26% 207,940
 26% 21% 20%
Total$977,383
 100% $809,014
 100% 21% 19%
Americas Income from Continuing Operations. The increase in our Americas income from operations was primarily due to higher income generated from acquisitions, higher revenues as a result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2018, the U.S. dollar was generally stronger relative to the Brazilian real than during the year ended December 31, 2017, resulting in approximately $4.0 million of unfavorable foreign currency impact on our Americas income from continuing operations during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
EMEA Income from Continuing Operations. The increase in our EMEA income from operations was primarily due to higher revenues as a result of our IBX data center expansion activity and acquisitions, as described above, as well as lower sales and marketing and general and administrative expenses as a percentage of revenues, which was partially due to lower amortization costs as a result of fully amortizing the TelecityGroup trade names during the third quarter of 2017. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $14.5 million of net favorable foreign currency impact to our EMEA income from continuing operations primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017.
Asia-Pacific Income from Continuing Operations. The increase in our Asia-Pacific income from operations was primarily due to higher income generated from the Metronode Acquisition, higher revenues as a result of our IBX data center expansion activity and organic growth as described above and lower cost of sales as a percentage of revenues. During the year ended December 31, 2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately $3.2 million of favorable foreign currency impact on our Asia-Pacific income from continuing operations during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
Interest Income. Interest income was $14.5 million and $13.1 million for the years ended December 31, 2018 and 2017, respectively. The average yield for the year ended December 31, 2018 was 1.24% versus 0.64% for the year ended December 31, 2017.
Interest Expense.  Interest expense increased to $521.5 million for the year ended December 31, 2018 from $478.7 million for the year ended December 31, 2017. The increase in interest expense was primarily attributable to our issuance of the €750.0 million 2.875% Euro Senior Notes due 2024 in March 2018 and $750 million 5.000% Infomart Senior Notes in April 2018. The increase was partially offset by lower weighted average interest rates during the year ended December 31, 2018 as compared to the year ended December 31, 2017. During the years ended December 31, 2018 and 2017, we capitalized $19.9 million and $22.6 million, respectively, of interest expense to construction in progress. We expect to incur higher interest expense in future periods in connection with additional indebtedness that we incurred during 2018 and as a result of the increasing interest rates.
Other Income (Expense). We recorded net other income of $14.0 million and $9.2 million for the years ended December 31, 2018 and 2017, respectively, primarily due to foreign currency exchange gains and losses during the periods.
Loss on Debt Extinguishment. We recorded $51.4 million net loss on debt extinguishment during the year ended December 31, 2018, comprised of (i) $17.1 million of loss on debt extinguishment as a result of amendments to leases impacting the related

financing obligations; (ii) $19.5 million of loss on debt extinguishment from the settlement of financing obligations as a result of the Infomart Dallas Acquisition; (iii) $12.6 million of loss on debt extinguishment as a result of the settlement of financing obligations for properties purchased and (iv) $2.2 million of loss on debt extinguishment as a result of the redemption of the Japanese Yen Term Loan. During the year ended December 31, 2017, we recorded $65.8 million net loss on debt extinguishment comprised of (i) $14.6 million of loss on debt extinguishment from the early redemption of the senior notes; (ii) $22.5 million of loss on debt extinguishment from the redemption of term loans under the previously outstanding credit facility; (iii) $16.7 million of loss on debt extinguishment as a result of amendments to leases and financing obligations and (iv) $12.0 million of loss on debt extinguishment from the settlement of financing obligations as a result of properties purchased.
Income Taxes. We operate as a REIT for federal income tax purposes. As a REIT, we are generally not subject to federal income taxes on our taxable income distributed to stockholders. We intend to distribute or have distributed the entire taxable income generated by the operations of our QRSs for the years ended December 31, 2018 and December 31, 2017, respectively. As such, other than tax attributable to built-in-gains recognized and withholding taxes, no provision for U.S. income taxes for the QRSs has been included in the accompanying consolidated financial statements for the years ended December 31, 2018 and 2017.
We have made TRS elections for some of our subsidiaries in and outside the U.S. In general, a TRS may provide services that would otherwise be considered impermissible for REITs to provide and may hold assets that REITs cannot hold directly. U.S. income taxes for the TRS entities located in the U.S. and foreign income taxes for our foreign operations regardless of whether the foreign operations are operated as QRSs or TRSs have been accrued, as necessary, for the years ended December 31, 2018 and 2017.
For the years ended December 31, 2018 and 2017, we recorded $67.7 million and $53.9 million of income tax expenses, respectively. Our effective tax rates were 15.6% and 18.8%, respectively, for the years ended December 31, 2018 and 2017. The decrease in the effective tax rate in 2018 as compared to 2017 is primarily due to a release of valuation allowance in the current period as a result of a legal entity reorganization in our Americas region.
Adjusted EBITDA. Adjusted EBITDA is a key factor in how we assess the operating performance of our segments and develop regional growth strategies such as IBX data center expansion decisions. We define adjusted EBITDA as income or loss from operations plus depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs and gain on asset sales. See "Non-GAAP Financial Measures" below for more information about adjusted EBITDA and a reconciliation of adjusted EBITDA to income or loss from operations. Our adjusted EBITDA for the years ended December 31, 2018 and 2017 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$1,183,831
 49% $1,034,694
 51% 14% 15%
EMEA698,280
 29% 582,697
 28% 20% 15%
Asia-Pacific531,129
 22% 434,650
 21% 22% 21%
Total$2,413,240
 100% $2,052,041
 100% 18% 17%
Americas Adjusted EBITDA. The increase in our Americas adjusted EBITDA was primarily due to the Verizon Data Center Acquisition and the Infomart Dallas Acquisition, higher revenues as a result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2018, currency fluctuations resulted in approximately $9.6 million of net unfavorable foreign currency impact on our Americas adjusted EBITDA primarily due to the U.S. dollar being generally stronger relative to the Brazilian real during the year ended December 31, 2018 compared to the year ended December 31, 2017.
EMEA Adjusted EBITDA. The increase in our EMEA adjusted EBITDA was primarily due to higher revenues as a result of our IBX data center expansion activity and acquisitions, as described above, as well as lower sales and marketing and general and administrative expenses as a percentage of revenues. During the year ended December 31, 2018, currency fluctuations resulted in approximately $26.6 million of net favorable foreign currency impact to our EMEA adjusted EBITDA primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017.
Asia-Pacific Adjusted EBITDA. The increase in our Asia-Pacific adjusted EBITDA was primarily due to the Metronode Acquisition, higher revenues as a result of our IBX data center expansion activity and organic growth as described above and lower cost of revenues as a percentage of revenues. During the year ended December 31, 2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately

$4.4 million of net favorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2018 when compared to average exchange rates during the year ended December 31, 2017.
Years Ended December 31, 2017 and 2016
Revenues.    Our revenues for the years ended December 31, 2017 and 2016 were generated from the following revenue classifications and geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas:           
Recurring revenues$2,062,352
 47% $1,593,084
 44% 29% 29%
Non-recurring revenues110,408
 3% 86,465
 3% 28% 27%
 2,172,760
 50% 1,679,549
 47% 29% 29%
EMEA:           
Recurring revenues1,266,971
 29% 1,106,652
 31% 14% 15%
Non-recurring revenues79,285
 2% 64,687
 1% 23% 23%
 1,346,256
 31% 1,171,339
 32% 15% 15%
Asia-Pacific:           
Recurring revenues790,797
 18% 717,638
 20% 10% 11%
Non-recurring revenues58,615
 1% 43,463
 1% 35% 36%
 849,412
 19% 761,101
 21% 12% 12%
Total:           
Recurring revenues4,120,120
 94% 3,417,374
 95% 21% 21%
Non-recurring revenues248,308
 6% 194,615
 5% 28% 28%
 $4,368,428
 100% $3,611,989
 100% 21% 21%
Americas Revenues. Revenues for our Americas region for the year ended December 31, 2017 included approximately $359.1 million of revenues attributable to the Verizon Data Center Acquisition. During the years ended December 31, 2017 and 2016, our revenues from the United States, the largest revenue contributor in the Americas region for the periods, represented approximately 91% and 92%, respectively, of the regional revenues. Excluding revenues attributable to the Verizon Data Center Acquisition, growth in Americas revenues was primarily due to (i) $34.5 million of revenue generated from our recently-opened IBX data centers or IBX data center expansions in the Dallas, New York, São Paulo, Silicon Valley, Toronto and Washington, D.C. areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2017, the U.S. dollar was generally weaker relative to the Canadian dollar and Brazilian real than during the year ended December 31, 2016, resulting in approximately $11.4 million of favorable foreign currency impact on our Americas revenues during the year ended December 31, 2017 when compared to 2016 using average exchange rates.
EMEA Revenues.  As compared to 2016, revenues for our EMEA region for the year ended December 31, 2017 include $47.2 million of incremental revenues from acquisitions including the TelecityGroup Acquisition, which closed on January 15, 2016, the Paris IBX Data Center Acquisition, which closed in August 2016, the IO Acquisition, which closed in February 2017, and the Itconic and Zenium data center acquisitions, which closed in October 2017. Our revenues from the U.K., our largest revenue contributor in the EMEA region, represented 30% of regional revenues for the year ended December 31, 2017 compared to 32% of regional revenues for the year ended December 31, 2016. Excluding the acquisitions, our EMEA revenue growth was primarily due to (i) approximately $62.3 million of revenue from our IBX data centers or IBX data center expansions in the Amsterdam, Dubai, Dublin, Frankfurt, Helsinki, London, Paris and Zurich metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $4.9 million of net unfavorable foreign currency impact to our EMEA revenues primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Revenues.  Our revenues from Japan, the largest revenue contributor in the Asia-Pacific region, represented approximately 34% and 35%, respectively, for the year ended December 31, 2017 and 2016. Our Asia-Pacific revenue growth was primarily due to (i) approximately $42.6 million of revenue generated from our recently-opened IBX data center expansions in

the Hong Kong, Osaka and Sydney metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2017, the U.S. dollar was generally stronger relative to the Japanese Yen than during the year ended December 31, 2016, resulting in approximately $6.8 million of net unfavorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2017 when compared to 2016 using average exchange rates.
Cost of Revenues.  Our cost of revenues for the years ended December 31, 2017 and 2016 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$958,845
 44% $700,544
 38% 37% 36%
EMEA749,933
 34% 653,766
 36% 15% 15%
Asia-Pacific484,371
 22% 466,560
 26% 4% 5%
Total$2,193,149
 100% $1,820,870
 100% 20% 20%
 Years Ended December 31,
 2017 2016
Cost of revenues as a percentage of revenues:   
Americas44% 42%
EMEA56% 56%
Asia-Pacific57% 61%
Total50% 50%
Americas Cost of Revenues. Cost of revenues for our Americas region for the year ended December 31, 2017 included approximately $177.4 million of costs of revenues attributable to the Verizon Data Center Acquisition. Excluding the impact from the Verizon Data Center Acquisition, depreciation expense was $273.0 million and $241.6 million, respectively, for the years ended December 31, 2017 and 2016. The growth in depreciation expense was primarily due to our IBX expansion activity. In addition to the increase in depreciation expense, the increase in our Americas cost of revenues for the year ended December 31, 2017 compared to the year ended December 31, 2016 was primarily due to (i) $30.4 million of higher utilities, repairs and maintenance, property taxes, and other cost of sales in support of our business growth and (ii) $13.2 million of higher compensation costs, including general salaries, bonuses and stock-based compensation (1,114 Americas cost of revenues employees, excluding the Verizon Data Center Acquisition, as of December 31, 2017 versus 1,023 as of December 31, 2016). During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $7.7 million of net unfavorable foreign currency impact to our Americas cost of revenues primarily due to a generally weaker U.S. dollar relative to the Brazilian real and Canadian dollar during the year ended December 31, 2017 compared to the year ended December 31, 2016.
EMEA Cost of Revenues. As compared to 2016, cost of revenues for our EMEA region for the year ended December 31, 2017 included $36.7 million of incremental cost of revenues attributable to acquisitions, including the TelecityGroup Acquisition that closed on January 15, 2016, the Paris IBX Data Center Acquisition that closed in August 2016, the IO Acquisition, which closed in February 2017, and the Itconic and Zenium data center acquisitions, which closed in October 2017. Excluding cost of revenues attributable to these acquisitions, the increase in our EMEA cost of revenues was primarily due to (i) $25.5 million of higher utilities in support of our business growth; (ii) $16.4 million of higher other cost of sales, including third party and managed service expenses; (iii) $10.7 million of higher depreciation expense and (iv) $7.2 million of higher compensation costs, including general salaries, bonuses and stock-based compensation (743 EMEA cost of revenues employees, excluding TelecityGroup employees, as of December 31, 2017 versus 623 as of December 31, 2016). During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $2.7 million of net favorable foreign currency impact to our EMEA cost of revenues, primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Cost of Revenues. The increase in our Asia-Pacific cost of revenues was primarily due to (i) $16.7 million of higher utilities, rent, facility costs, consulting, bandwidth cost, custom service orders and repairs and maintenance costs in support of our business growth and (ii) $3.3 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and headcount growth (828 Asia-Pacific cost of revenues employees as of December 31, 2017 versus 787 as of December 31, 2016), partially offset by a decrease of $3.2 million in depreciation and accretion expenses. During the year ended

December 31, 2017, the U.S. dollar was generally stronger relative to the Japanese Yen than during the year ended December 31, 2016, resulting in approximately $5.0 million of net favorable foreign currency impact to our Asia-Pacific cost of revenues in 2017.
Sales and Marketing Expenses. Our sales and marketing expenses for the years ended December 31, 2017 and 2016 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$349,666
 60% $230,900
 53% 51% 51%
EMEA153,811
 26% 137,887
 31% 12% 14%
Asia-Pacific78,247
 14% 69,955
 16% 12% 13%
Total$581,724
 100% $438,742
 100% 33% 33%
 Years Ended December 31,
 2017 2016
Sales and marketing expenses as a percentage of revenues:   
Americas16% 14%
EMEA11% 12%
Asia-Pacific9% 9%
Total13% 12%
Americas Sales and Marketing Expenses. The increase in our Americas sales and marketing expenses was primarily due to (i) $75.3 million of amortization of the acquired intangible assets in connection with the Verizon Data Center Acquisition; (ii) $33.1 million of higher compensation costs, including sales compensation, general salaries, bonuses and stock-based compensation and headcount growth (608 Americas sales and marketing employees, including those from the Verizon Data Center Acquisition, as December 31, 2017, versus 553 as of December 31, 2016) and (iii) $4.1 million of higher consulting expenses to support our growth. During the year ended December 31, 2017, the impact of foreign currency fluctuations to our Americas sales and marketing expenses was not significant when compared to average exchange rates during the year ended December 31, 2016.
EMEA Sales and Marketing Expenses. The increase in the EMEA sales and marketing expense was primarily due to (i) $12.3 million of higher compensation costs, including sales compensation, general salaries, bonuses, stock-based compensation and headcount growth (378 EMEA sales and marketing employees as of December 31, 2017 versus 349 as of December 31, 2016) and (ii) an increase of $1.8 million in depreciation and amortization expense, primarily due to acquisitions made during the current year. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $2.8 million of net favorable foreign currency impact to our EMEA sales and marketing expenses primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Sales and Marketing Expenses. The increase in the Asia-Pacific sales and marketing expense is primarily due to (i) $6.5 million of higher compensation costs, including sales compensation, general salaries, bonuses, stock-based compensation and a larger average headcount in 2017 as compared to 2016 and (ii) $3.2 million of higher rent expense in support of our growth. For the year ended December 31, 2017, the impact of foreign currency fluctuations to our Asia-Pacific sales and marketing expenses was not significant when compared to average exchange rates for the year ended December 31, 2016.
General and Administrative Expenses. Our general and administrative expenses for the years ended December 31, 2017 and 2016 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$472,942
 63% $391,637
 56% 21% 20%
EMEA195,430
 26% 228,310
 33% (14)% (12)%
Asia-Pacific77,534
 11% 74,614
 11% 4% 5%
Total$745,906
 100% $694,561
 100% 7% 8%

 Years Ended December 31,
 2017 2016
General and Administrative expenses as a percentage of revenues:   
Americas22% 23%
EMEA15% 19%
Asia-Pacific9% 10%
Total17% 19%
Americas General and Administrative Expenses. The increase in our Americas general and administrative expenses was primarily due to (i) $35.5 million of higher compensation costs, including general salaries, bonuses, stock-based compensation, and headcount growth (1,207 Americas general and administrative employees, including those from the Verizon Data Center Acquisition, as of December 31, 2017 versus 934 as of December 31, 2016); (ii) $22.9 million of higher depreciation expense associated with certain systems, including revenue, data management and cloud exchange systems, to improve our quote to order and billing processes and to support the integration and growth of our business and (iii) $16.6 million of higher office expense and consulting cost to support our growth. During the year ended December 31, 2017, the impact of foreign currency fluctuations to our Americas general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2016. Over the course of the past year, we have been investing in our Americas general and administrative functions to scale this region effectively for growth, which has included additional investments in improving our back office systems. We expect our current efforts to improve our back office systems will continue over the next several years. Going forward, although we are carefully monitoring our spending, we expect Americas general and administrative expenses to increase as we continue to further scale our operations to support our growth, including these investments in our back office systems and investments to maintain our qualification for taxation as a REIT.
EMEA General and Administrative Expenses. The decrease in our EMEA general and administrative expenses was primarily due to (i) $20.8 million of lower amortization expenses as a result of fully amortizing the TelecityGroup trade names during the current period and (ii) $8.4 million of lower consulting expenses which was largely due to the completion of TelecityGroup integration activities in the current period. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $5.7 million of net favorable foreign currency impact to our EMEA general and administrative expenses primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016. Over the course of the past year, we have been investing in our EMEA general and administrative functions as a result of our ongoing efforts to scale this region effectively for growth.
Asia-Pacific General and Administrative Expenses. The increase in our Asia-Pacific general and administrative expense was primarily due to $5.0 million of higher compensation costs, including general salaries, bonuses, stock-based compensation and headcount growth (453 Asia-Pacific general and administrative employees as of December 31, 2017 versus 358 as of December 31, 2016), partially offset by a $1.3 million decrease in rent, repair and maintenance expense. For the year ended December 31, 2017, the impact of foreign currency fluctuations on our Asia-Pacific general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2016.
Acquisition Costs.  During the year ended December 31, 2017, we recorded acquisition costs totaling $38.6 million primarily in the Americas and EMEA regions, of which $28.5 million was related to the Verizon Data Center Acquisition during the year ended December 31, 2017 attributable to the Americas region. During the year ended December 31, 2016, we recorded acquisition costs totaling $64.2 million primarily in the EMEA region due to the acquisitions of Telecity and the Paris IBX Data Center, and to a lesser degree, to the Americas region.
Impairment Charges. During the year ended December 31, 2016, we recorded impairment charges totaling $7.7 million in the Asia-Pacific region relating to assets held for sale. We did not have impairment charges during the year ended December 31, 2017.
Gain on Asset Sales. During the year ended December 31, 2016, we recorded a gain on asset sales of $32.8 million primarily relating to the sale of the LD2 data center in the EMEA region and a parcel of land in San Jose in the Americas region. We did not have any gain on asset sales during the year ended December 31, 2017.

Income from Operations. Our income from operations for the years ended December 31, 2017 and 2016 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$363,220
 45% $352,180
 57% 3% 3%
EMEA237,854
 29% 124,853
 20% 91% 85%
Asia-Pacific207,940
 26% 141,706
 23% 47% 47%
Total$809,014
 100% $618,739
 100% 31% 30%
Americas Income from Continuing Operations. Our Americas income from continuing operations did not change significantly year over year. While revenues increased as described above, this was largely offset by (i) an increase of $18.6 million in acquisition costs, which was primarily related to the Verizon Data Center Acquisition; (ii) additional amortization of the acquired intangible assets resulted from the Verizon Data Center Acquisition and (iii) higher cost of revenues and sales and marketing expense as a percentage of revenues. The impact of foreign currency fluctuations on our Americas income from continuing operations for the year ended December 31, 2017 was not significant when compared to the year ended December 31, 2016.
EMEA Income from Continuing Operations. The increase in our EMEA income from continuing operations was primarily due to higher revenues as a result of our IBX data center expansion activity and acquisitions, as described above, as well as lower operating expenses as a percentage of revenues, lower amortization costs as a result of fully amortizing the TelecityGroup trade names during the current period and lower acquisition costs incurred for the year ended December 31, 2017. We incurred $9.2 million of acquisition costs during the year ended December 31, 2017, as compared to $54.5 million of acquisition costs during the year ended December 31, 2016, which was primarily related to our acquisition of TelecityGroup. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $6.4 million of net favorable foreign currency impact to our EMEA income from continuing operations primarily due to a generally weaker U.S. dollar relative to the Euro during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Income from Continuing Operations. The increase in our Asia-Pacific income from continuing operations was primarily due to higher revenues as result of our IBX data center expansion activity and organic growth as described above and lower cost of revenues as a percentage of revenues. The impact of foreign currency fluctuations on our Asia-Pacific income from continuing operations for the year ended December 31, 2017 was not significant when compared to average exchange rates of the year ended December 31, 2016.
Interest Income. Interest income was $13.1 million and $3.5 million for the years ended December 31, 2017 and 2016, respectively. The increase in interest income was driven by higher cash balances and interest yield rates for the year ended December 31, 2017. The average yield for the year ended December 31, 2017 was 0.64% versus 0.37% for the year ended December 31, 2016.
Interest Expense.  Interest expense increased to $478.7 million for the year ended December 31, 2017 from $392.2 million for the year ended December 31, 2016. The increase in interest expense was primarily due to the Term B-2 Loan borrowings of €1.0 billion and the issuance of $1.25 billion of 2027 Senior Notes in March 2017, as well as additional financings such as various capital lease and other financing obligations to support our expansion projects. During the years ended December 31, 2017 and 2016, we capitalized $22.6 million and $13.3 million, respectively, of interest expense to construction in progress.
Other Income (Expense). We recorded net other income of $9.2 million and net expense of $57.9 million for the years ended December 31, 2017 and 2016, respectively, primarily due to foreign currency exchange gains and losses during the periods, including $63.5 million in foreign currency losses recognized in the first quarter of 2016 as a result of completing the acquisition of TelecityGroup.
Loss on Debt Extinguishment. We recorded $65.8 million net loss on debt extinguishment during the year ended December 31, 2017 comprised of (i) $14.6 million of loss on debt extinguishment from the early redemption of the senior notes; (ii) $22.5 million of loss on debt extinguishment from the redemption of term loans under the previously outstanding credit facility; (iii) $16.7 million of loss on debt extinguishment as a result of amendments to leases and financing obligations and (iv) $12.0 million of loss on debt extinguishment from the settlement of financing obligations of properties purchased. During the year ended December 31, 2016, we recorded a $12.3 million loss on debt extinguishment as a result of the settlement of the financing obligations for our Paris 3 IBX data center, a portion of the lender fees associated with the Japanese Yen Term Loan, and the prepayment and termination of our 2012 and 2013 Brazil financings.

Income Taxes. We operate as a REIT for federal income tax purposes. As a REIT, we are generally not subject to federal income taxes on our taxable income distributed to stockholders. We intend to distribute or have distributed the entire taxable income generated by the operations of our REIT and QRSs for the years ended December 31, 2017 and December 31, 2016, respectively. As such, other than built-in-gains recognized and withholding taxes, no provision for U.S. income taxes for the REIT and QRSs has been included in the accompanying consolidated financial statements for the years ended December 31, 2017 and 2016.
We have made TRS elections for some of our subsidiaries in and outside the U.S. In general, a TRS may provide services that would otherwise be considered impermissible for REITs to provide and may hold assets that REITs cannot hold directly. U.S. income taxes for the TRS entities located in the U.S. and foreign income taxes for our foreign operations regardless of whether the foreign operations are operated as QRSs or TRSs have been accrued, as necessary, for the years ended December 31, 2017 and 2016.
For the years ended December 31, 2017 and 2016, we recorded $53.9 million and $45.5 million of income tax expenses, respectively. Our effective tax rates were 18.8% and 28.4%, respectively, for the years ended December 31, 2017 and 2016. The decrease in the effective tax rate in 2017 as compared to 2016 is primarily due to recognition of unrecognized tax benefits related to our tax positions in the U.S. and Brazil as a result of a lapse in statutes of limitations and lower amount of non-deductible expenses within our EMEA operations. This is partially offset by net deferred tax asset remeasurement in the U.S. TRSs due to the corporate income tax rate reduction from 35% to 21% effective January 1, 2018 as a result of the TCJA.
Adjusted EBITDA. Adjusted EBITDA is a key factor in how we assess the operating performance of our segments and develop regional growth strategies such as IBX data center expansion decisions. We define adjusted EBITDA as income or loss from operations plus depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs and gain on asset sales. See "Non-GAAP Financial Measures" below for more information about adjusted EBITDA and a reconciliation of adjusted EBITDA to income or loss from operations. Our adjusted EBITDA for the years ended December 31, 2017 and 2016 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$1,034,694
 51% $787,311
 47% 31% 31%
EMEA582,697
 28% 494,263
 30% 18% 17%
Asia-Pacific434,650
 21% 375,900
 23% 16% 16%
Total$2,052,041
 100% $1,657,474
 100% 24% 24%
Americas Adjusted EBITDA. The increase in our Americas adjusted EBITDA was primarily due to the Verizon Data Center Acquisition, higher revenues as result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2017, currency fluctuations resulted in approximately $4.5 million of net favorable foreign currency impact on our Americas adjusted EBITDA primarily due to the U.S. dollar being generally weaker relative to the Canadian dollar and Brazilian real during the year ended December 31, 2017 compared to the year ended December 31, 2016.
EMEA Adjusted EBITDA. The increase in our EMEA adjusted EBITDA was primarily due to higher revenues as a result of our IBX data center expansion activity and organic growth as described above and lower operating expenses as a percentage of revenues. During the year ended December 31, 2017, currency fluctuations resulted in approximately $2.1 million of net favorable foreign currency impact to our EMEA adjusted EBITDA primarily due to a generally weaker U.S. dollar relative to the Euro during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Adjusted EBITDA. The increase in our Asia-Pacific adjusted EBITDA was primarily due to higher revenues as a result of our IBX data center expansion activity and organic growth, as described above, and lower cost of revenues as a percentage of revenues. During the year ended December 31, 2017, the U.S. dollar was generally stronger relative to the Japanese Yen than during the year ended December 31, 2016, resulting in approximately $2.7 million of net unfavorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2017 when compared to average exchange rates during the year ended December 31, 2016.
Non-GAAP Financial Measures
We provide all information required in accordance with GAAP, but we believe that evaluating our ongoing operating results may be difficult if limited to reviewing only GAAP financial measures. Accordingly, we use non-GAAP financial measures to evaluate our operations.

Non-GAAP financial measures are not a substitute for financial information prepared in accordance with GAAP. Non-GAAP financial measures should not be considered in isolation, but should be considered together with the most directly comparable GAAP financial measures and the reconciliation of the non-GAAP financial measures to the most directly comparable GAAP financial measures. We have presented such non-GAAP financial measures to provide investors with an additional tool to evaluate our operating results in a manner that focuses on what management believes to be our core, ongoing business operations. We believe that the inclusion of these non-GAAP financial measures provides consistency and comparability with past reports and provides a better understanding of the overall performance of the business and ability to perform in subsequent periods. We believe that if we did not provide such non-GAAP financial information, investors would not have all the necessary data to analyze Equinix effectively.
Investors should note that the non-GAAP financial measures used by us may not be the same non-GAAP financial measures, and may not be calculated in the same manner, as those of other companies. Investors should therefore exercise caution when comparing non-GAAP financial measures used by us to similarly titled non-GAAP financial measures of other companies.
Our primary non-GAAP financial measures, adjusted EBITDA and adjusted funds from operations ("AFFO"), exclude depreciation expense as these charges primarily relate to the initial construction costs of our IBX data centers and do not reflect our current or future cash spending levels to support our business. Our IBX data centers are long-lived assets and have an economic life greater than 10 years. The construction costs of an IBX data center do not recur with respect to such data center, although we may incur initial construction costs in future periods with respect to additional IBX data centers, and future capital expenditures remain minor relative to our initial investment. This is a trend we expect to continue. In addition, depreciation is also based on the estimated useful lives of our IBX data centers. These estimates could vary from actual performance of the asset, are based on historical costs incurred to build out our IBX data centers and are not indicative of current or expected future capital expenditures. Therefore, we exclude depreciation from our operating results when evaluating our operations.
In addition, in presenting adjusted EBITDA and AFFO, we exclude amortization expense related to acquired intangible assets. Amortization expense is significantly affected by the timing and magnitude of our acquisitions and these charges may vary in amount from period to period. We exclude amortization expense to facilitate a more meaningful evaluation of our current operating performance and comparisons to our prior periods. We exclude accretion expense, both as it relates to asset retirement obligations as well as accrued restructuring charge liabilities, as these expenses represent costs which we believe are not meaningful in evaluating our current operations. We exclude stock-based compensation expense, as it can vary significantly from period to period based on share price, the timing, size and nature of equity awards. As such, we, and many investors and analysts, exclude stock-based compensation expense to compare our operating results with those of other companies. We also exclude restructuring charges. The restructuring charges relate to our decisions to exit leases for excess space adjacent to several of our IBX data centers, which we did not intend to build out, or our decision to reverse such restructuring charges. We also exclude impairment charges related to certain long-lived assets. The impairment charges are related to expense recognized whenever events or changes in circumstances indicate that the carrying amount of long-lived assets are not recoverable. We also exclude gain or loss on asset sales as it represents profit or loss that is not meaningful in evaluating the current or future operating performance. Finally, we exclude acquisition costs from AFFO and adjusted EBITDA to allow more comparable comparisons of our financial results to our historical operations. The acquisition costs relate to costs we incur in connection with business combinations. Such charges generally are not relevant to assessing the long-term performance of the company. In addition, the frequency and amount of such charges vary significantly based on the size and timing of the acquisitions. Management believes items such as restructuring charges, impairment charges, gain or loss on asset sales and acquisition costs are non-core transactions; however, these types of costs may occur in future periods.

Adjusted EBITDA
We define adjusted EBITDA as income from operations excluding depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs, and gain on asset sales as presented below (in thousands):
 Years Ended December 31,
 2018 2017 2016
Income from operations$977,383
 $809,014
 $618,739
Depreciation, amortization, and accretion expense1,226,741
 1,028,892
 843,510
Stock-based compensation expense180,716
 175,500
 156,148
Acquisition costs34,413
 38,635
 64,195
Impairment charges
 
 7,698
Gain on asset sales(6,013) 
 (32,816)
Adjusted EBITDA$2,413,240
 $2,052,041
 $1,657,474
Our adjusted EBITDA results have improved each year and in each region in total dollars due to the improved operating results discussed earlier in "Results of Operations", as well as the nature of our business model consisting of a recurring revenue stream and a cost structure which has a large base that is fixed in nature also discussed earlier in "Overview".
Funds from Operations ("FFO") and AFFO
We use FFO and AFFO, which are non-GAAP financial measures commonly used in the REIT industry. FFO is calculated in accordance with the standards established by the National Association of Real Estate Investment Trusts. FFO represents net income (loss), excluding gain (loss) from the disposition of real estate assets, depreciation and amortization on real estate assets and adjustments for unconsolidated joint ventures' and non-controlling interests' share of these items.
In presenting AFFO, we exclude certain items that we believe are not good indicators of our current or future operating performance. AFFO represents FFO excluding depreciation and amortization expense on non-real estate assets, accretion, stock-based compensation, restructuring charges, impairment charges, acquisition costs, an installation revenue adjustment, a straight-line rent expense adjustment, a contract cost adjustment, amortization of deferred financing costs and debt discounts and premiums, gain (loss) on debt extinguishment, an income tax expense adjustment, recurring capital expenditures and adjustments for unconsolidated joint ventures' and noncontrolling interests' share of these items and net income (loss) from discontinued operations, net of tax. The adjustments for installation revenue, straight-line rent expense and contract costs are intended to isolate the cash activity included within the straight-lined or amortized results in the consolidated statement of operations. We exclude the amortization of deferred financing costs and debt discounts and premiums as these expenses relate to the initial costs incurred in connection with debt financings that have no current or future cash obligations. We exclude gain (loss) on debt extinguishment since it generally represents the write-off of initial costs incurred in connection with debt financings or a cost that is incurred to reduce future interest costs and is not a good indicator of our current or future operating performance. We include an income tax expense adjustment, which represents the non-cash tax impact due to changes in valuation allowances, uncertain tax positions and deferred taxes that do not relate to current period's operations. We deduct recurring capital expenditures, which represent expenditures to extend the useful life of its IBX data centers or other assets that are required to support current revenues. We also exclude net income (loss) from discontinued operations, net of tax, which represents results that may not recur and are not a good indicator of our current future operating performance.

Our FFO and AFFO were as follows (in thousands):
 Years Ended December 31,
 2018 2017 2016
Net income$365,359
 $232,982
 $126,800
Adjustments:     
Real estate depreciation and amortization883,118
 754,351
 626,564
(Gain) loss on disposition of real estate property4,643
 4,945
 (28,388)
Adjustments for FFO from unconsolidated joint ventures
 85
 113
FFO$1,253,120
 $992,363
 $725,089
 Years Ended December 31,
 2018 2017 2016
FFO$1,253,120
 $992,363
 $725,089
Adjustments:     
Installation revenue adjustment10,858
 24,496
 20,161
Straight-line rent expense adjustment7,203
 8,925
 7,700
Contract cost adjustment(20,358) 
 
Amortization of deferred financing costs and debt discounts and premiums13,618
 24,449
 18,696
Stock-based compensation expense180,716
 175,500
 156,149
Non-real estate depreciation expense140,955
 111,121
 87,781
Amortization expense203,416
 177,008
 122,862
Accretion expense (adjustment)(748) (13,588) 6,303
Recurring capital expenditures(203,053) (167,995) (141,819)
Loss on debt extinguishment51,377
 65,772
 12,276
Acquisition costs34,413
 38,635
 64,195
Impairment charges
 
 7,698
Net income from discontinued operations, net of tax
 
 (12,392)
Income tax expense adjustment(12,420) 371
 3,680
Adjustments for AFFO from unconsolidated joint ventures
 (17) (40)
AFFO$1,659,097
 $1,437,040
 $1,078,339
Our AFFO results have improved due to the improved operating results discussed earlier in "Results of Operations," as well as due to the nature of our business model which consists of a recurring revenue stream and a cost structure which has a large base that is fixed in nature as discussed earlier in "Overview."
Constant Currency Presentation
Our revenues and certain operating expenses (cost of revenues, sales and marketing and general and administrative expenses) from our international operations have represented and will continue to represent a significant portion of our total revenues and certain operating expenses. As a result, our revenues and certain operating expenses have been and will continue to be affected by changes in the U.S. dollar against major international currencies such as the Euro, British pound, Japanese yen, Singapore dollar, Australian dollar and Brazilian real. In order to provide a framework for assessing how each of our business segments performed excluding the impact of foreign currency fluctuations, we present period-over-period percentage changes in our revenues and certain operating expenses on a constant currency basis in addition to the historical amounts as reported. Presenting constant currency results of operations is a non-GAAP financial measure and is not meant to be considered in isolation or as an alternative to GAAP results of operations. However, we have presented this non-GAAP financial measure to provide investors with an additional tool to evaluate our operating results. To present this information, our current and comparative prior period revenues and certain operating expenses from entities reporting in currencies other than the U.S. dollar are converted into U.S. dollars at constant exchange rates rather than the actual exchange rates in effect during the respective periods (i.e. average rates in effect for the year ended December 31, 2017 are used as exchange rates for the year ended December 31, 2018 when comparing the year

ended December 31, 2018 with the year ended December 31, 2017, and average rates in effect for the year ended December 31, 2016 are used as exchange rates for the year ended December 31, 2017 when comparing the year ended December 31, 2017 with the year ended December 31, 2016).
Liquidity and Capital Resources
As of December 31, 2016,2018, our total indebtedness was comprised of debt and financing obligations totaling approximately $6,821.6 million$11.4 billion consisting of (a) approximately $3,850.0$8,500.1 million of principal from our senior notes, (b) approximately $1,511.8$1,518.9 million from our capital lease and other financing obligations and (c) $1,459.8$1,390.4 million of principal from our mortgage and other loans payable and mortgage (gross of debt issuance cost, debt discount, andplus debt premium).
We believe we have sufficient cash, coupled with anticipated cash generated from operating activities, to meet our operating requirements, including repayment of the current portion of our debt as it becomes due, payment of regular dividend distributions and completion of our publicly-announced expansion projects.
On March 14, 2018, we issued €750.0 million 2.875% Euro Senior Notes due 2024. On April 2, 2018, we completed the Infomart Dallas Acquisition for a purchase price of approximately $804.0 million, which was funded with approximately $45.8 million in cash and $758.2 million aggregate fair value of 5.000% senior unsecured notes. On April 18, 2018, we completed the Metronode Acquisition for a cash purchase price of A$1.034 billion or approximately $804.6 million at the exchange rate in effect on April 18, 2018. In July, we drew down the full amount of the JPY Term Loan of ¥47.5 billion, or approximately $424.7 million at the exchange rate effective on July 31, 2018, and prepaid the remaining principal of our existing Japanese Yen Term Loan of ¥43.8 billion or approximately $391.3 million. As of December 31, 2016,2018, we had $761.9$610.7 million of cash, cash equivalents and short-term and long-term investments, of which approximately $380.8$280.1 million was held in the U.S. We believe that our current expansion activities in the U.S. can be funded with our U.S.-based cash and cash equivalents and investments. On December 6, 2016,In addition to our cash and investment portfolio, we entered into a transaction agreement with Verizonhave additional liquidity available to acquire Verizon's colocation services business at 24 data center sites located inus from our $2.0 billion revolving facility and the United States, Brazil and Colombia for a cash purchase price of $3,600.0 million. We expect to fund the acquisition with a combination of cash on hand, proceeds from the €1,000.0 million Term B-2 Loan which we borrowed in full on January 6, 2017 (see Note 10 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K), and proceeds from future debt and equity financings. In connection with the Verizon Asset Purchase, we entered into a commitment letter to provide a senior unsecured bridge facility in the aggregate principal amount of $2,000.0 million for the purpose of funding a portion of the cash consideration for the acquisition. See Note 2 of Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.2018 ATM Program as described below. 
As of December 31, 2016,2018, we had 3042 irrevocable letters of credit totaling $50.5$68.5 million issued and outstanding under the revolving credit facility; as a result of these letters of credit, wefacility. We had a total of approximately $1,449.5 million$1.9 billion of additional liquidity available to us under the revolving credit facility. Revolving Facility.
For the year ended December 31, 2018, we sold 930,934 shares for approximately $388.2 million, net of payment of commissions to the sales agents and equity offering costs under our 2017 ATM Program. As of December 31, 2018, no shares remain available for sale under the 2017 ATM Program. In December 2018, we launched the 2018 ATM Program to sell up to $750.0 million of common stock in at the market offerings. As of December 31, 2018, no shares have been sold under the 2018 ATM Program.
Besides any further financing activitiesactivity we may pursue, customer collections are our primary source of cash. While we believe we have a strong customer base, and have continued to experience relatively strong collections, if the current market conditions were to deteriorate, some of our customers may have difficulty paying us and we may experience increased churn in our customer base, including reductions in their commitments to us, all of which could have a material adverse effect on our liquidity. Additionally, we may pursue additional expansion opportunities, primarily the build out of new IBX data centers, in certain of our existing markets which are at or near capacity within the next year, as well as potential acquisitions.acquisitions and joint ventures. While we expect to fund these plans with our existing resources, additional financing, either debt or equity, may be required, and if current market conditions were to deteriorate, we may be unable to secure additional financing, or any such additional financing may only be available to us on unfavorable terms. An inability to pursue additional expansion opportunities will have a material adverse effect on our ability to maintain our desired level of revenue growth in future periods.
We completed our conversion to a REIT in 2014 and began operating as a REIT effective January 1, 2015. As a result of our conversion to a REIT, we made special distributions to our stockholders in 2015 and 2014. The distributions were payable in common stock or cash at the election of our stockholders, with the cash portion of the distributions subject to certain maximum amounts. As a result of the special distributions, we paid a total of $125.5 million in 2015 and $83.3 million in 2014 and distributed 1.7 million and 1.5 million shares of common stock in 2015 and 2014, respectively. Also as a result of our conversion to a REIT, we began paying quarterly dividends in 2015. We paid an aggregate of $499.5 million of quarterly cash dividends during 2016 and $521.5 million of quarterly cash dividends and special distribution during 2015.
Sources and Uses of Cash
Years Ended December 31,Years Ended December 31,
2016 2015 20142018 2017 2016
(in thousands)(in thousands)
Net cash provided by operating activities$1,016,580
 $894,793
 $689,420
$1,815,426
 $1,439,233
 $1,019,353
Net cash used in investing activities(1,592,155) (1,134,927) (435,839)(3,075,528) (5,400,826) (2,045,668)
Net cash provided by (used in) financing activities(894,292) 1,873,182
 107,401
470,912
 4,607,860
 (897,065)

Operating Activities
Our cash provided by our operations is generated by colocation, interconnection, managed infrastructure and other revenues. Our primary use of cash from our operating activities include compensation and related costs, interest payments, other general corporate expenditures and taxes. The increase in net cash provided by operating activities during 20162018 compared to 20152017 was primarily due to improved operating results combined with incremental operating cash provided by the acquisitionacquisitions of TelecityGroupInfomart Dallas and Metronode in January 2016April 2018 and inclusion of full year operating results of Bit-isle.the Verizon Data Center Acquisition, offset by increases in cash paid for cost of revenues, operating expenses, interest expense and income taxes. The increase in net cash provided by operating activities during 20152017 compared to 20142016 was primarily due to improved operating results.results combined with incremental operating cash provided by the Verizon Data Center Acquisition and other acquisitions in 2017, offset by timing of collections on our receivables and increases in cash paid for cost of revenues, operating expenses, interest expense and income taxes.
Investing Activities
The decrease in net cash used in investing activities during 2018 compared to 2017 was primarily due to the decrease in spending for business acquisitions of approximately of $3.1 billion, primarily due to the Verizon Data Center Acquisition in 2017, partially offset by $717.4 million of higher capital expenditures and $87.3 million of higher purchases of real estate, primarily as a result of expansion activity. The increase in net cash used in investing activities during 20162017 compared to 20152016 was primarily due to the increase in spending for thebusiness acquisitions of TelecityGroup andapproximately of $2.2 billion, primarily related to the Paris IBXVerizon Data Center of $1,521.4 million, net of cash acquired, over prior year acquisition spending,Acquisition, a decrease in proceeds from asset sales and maturities of investments, net of purchases, of $503.3$803.8 million, and $245.2$265.4 million of higher capital expenditures primarily a result of expansion activity. These uses were partially offset by proceeds from sales of assets of $851.6 million, net of cash transferred, and changes in restricted cash totaling $950.9 million related primarily to the TelecityGroup acquisition. The increase in net cash used in investing activities during 2015 compared to 2014 was primarily due to a $513.9 million increase in restricted cash, primarily in connection with our cash and share offer for TelecityGroup, $245.6 million, net of cash for our acquisition of Bit-isle and Nimbo, $207.9 million of higher capital expenditures primarily as a result of expansion activity and $21.5$67.0 million of higher purchases of real estate, partially offset by $187.0 millionprimarily as a result of lower purchase of investments and $87.6 million of higher sales and maturities of investment.expansion activity.
During 2017,2019, we expect to complete the acquisition of Verizon's data center sites located in the United States, Brazil and Colombia. We also anticipate our IBX expansion construction activity will be approximately the same asincrease from our 20162018 levels. If the opportunity to expand is greater than planned and we have sufficient funding to pursue such expansion opportunities, we may further increase the level of capital expendituresexpenditure to support this growth as well as pursue additional business acquisitions, propertyand real estate acquisitions or joint ventures.
Financing Activities
Net cash provided by financing activities during 2018 was primarily due to (i) the issuance of €750.0 million 2.875% Euro Senior Notes due 2024, or approximately $929.9 million in U.S. dollars, at the exchange rate in effect on March 14, 2018; (ii) borrowing of the JPY Term Loan of ¥47.5 billion, or approximately $424.7 million at the exchange rate effective on July 31, 2018; (iii) sale of 930,934 shares under the 2017 ATM Program, for net proceeds of $388.2 million and (iv) proceeds from employee awards of $50.1 million. The proceeds were partially offset by (i) dividend distributions of $738.6 million; (ii) repayments of capital lease and other financing obligations of $103.8 million; (iii) repayments of mortgage and loans payable of $447.5 million, primarily related to the prepayment of the remaining principal of our existing Japanese Yen Term Loan; (iv) payments of debt extinguishment costs of $20.6 million and (v) payments of debt issuance costs of $12.2 million. 
Net cash provided by financing activities during 2017 was primarily due to (i) borrowings under our previously outstanding credit facility of €1,000.0 million, or approximately $1,059.8 million at the exchange rate in effect on January 6, 2017; (ii) the issuance of $1,250.0 million 2027 Senior Notes; (iii) the issuance of €1,000.0 million 2025 Euro Senior Notes, or approximately $1,199.7 million at the exchange rate on September 20, 2017; (iv) the issuance of €1,000.0 million 2026 Euro Senior Notes, approximately $1,179.0 million at the exchange rate on December 12, 2017; (v) borrowings under our Term Loan Facility of approximately $997.1 million on December 12, 2017, at the exchange rate in effect on that day; (vi) the sale of common stock for net proceeds of $2,481.4 million and (vii) proceeds from employee awards of $41.7 million, partially offset by (i) repayment of the entire $500.0 million principal amount of our 4.875% Senior Notes due 2020; (ii) repayment in full of our previously outstanding credit facility of approximately $2,207.7 million in total at the exchange rate on December 12, 2017; (iii) dividend distributions of $621.5 million; (iv) repayments of capital lease and other financing obligations of $93.5 million and (v) debt issuance costs of $81.0 million.
Net cash used in financing activities during 2016 was primarily due to (i) $1,462.9 million repayment of loans payable including repayment of loans assumed in the TelecityGroup acquisition, bridge term loan and revolving credit facility,facility; (ii) $114.4 million repayment of capital lease and other financing obligations and (iii) $499.5 million payment of dividends, partially offset by (iv) $1,168.3 million of proceeds from loans payable including proceeds from our Term Loan Bpreviously outstanding credit facility and Japanese Yen Term Loan. Net cash provided by financing activities during 2015 was primarily due to (i) $1,100.0 million of gross proceeds from the senior notes offering in December 2015, (ii) $829.5 million of net proceeds from our public offering of common stock in November 2015, (iii) $1,197.1 million of proceeds from loans payable including proceeds from our term loan modification, our bridge term loan and our revolving credit facility, partially offset by (iv) $715.3 million repayment of mortgage and loans payable including repayment of $171.2 million of loans assumed in the Bit-isle acquisition and repayment of $544.1 million of U.S. dollar-denominated term loan and other mortgage and loan payments, (v) $396.0 million of quarterly dividend distributions and (vi) $125.5 million of special distributions. The net cash provided by financing activities for 2014 was primarily due to $1,250.00 million of proceeds from the senior notes offering in November 2014, $500.0 million of proceeds from the term loan facility, partially offset by (i) $1,100.0 million for repayment of debt including $750.0 million for the redemption of the 7.00% senior notes, prepayment of the remaining principal balance of the U.S. term loan of $110.0 million, $43.5 million for repayments of mortgage and other loan payable, and $29.5 million for the exchanges of the 3.00% convertible subordinated notes and 4.75% convertible subordinated notes, (ii) $298.0 million for the purchases of treasury stock, (iii) $226.3 million for the purchase of Riverwood’s interest in ALOG and the approximate 10% of ALOG owned by ALOG management and (iv) $83.3 million for the cash portion of the special distribution. Going forward, we expect that our financing activities will consist primarily of repayment of our debt and additional financings needed to support expansion opportunities, additional acquisitions or joint ventures and the payment of our regular cash dividends.

Debt Obligations
Debt Facilities
We have various debt obligations with maturity dates ranging from 20172019 to 20262027 under which a total principal balance of $5,309.8 million$9.9 billion remained outstanding (gross of debt issuance cost and discounts) as of December 31, 2016.2018. For further information on debt obligations, see “Debt Facilities”"Debt Facilities" in Note 1011 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.

Capital Lease and Other Financing Obligations
We have numerous capital lease and other financing obligations with maturity dates ranging from 20172019 to 2053 under which a total principal balance of $1,511.8$1,518.9 million remained outstanding as of December 31, 20162018 with a weighted average effective interest rate of 7.96%7.88%. For further information on our capital leases and other financing obligations, see “Capital Leases"Capital Lease and Other Financing Obligations”Obligations" in Note 910 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.
Contractual Obligations and Off-Balance-Sheet Arrangements
We lease a majority of our IBX data centers and certain equipment under non-cancelable lease agreements expiring through 2065. The following represents our debt maturities, financings, leases and other contractual commitments as of December 31, 20162018 (in thousands):
2017 2018 2019 2020 2021 Thereafter Total2019 2020 2021 2022 2023 Thereafter Total
Term loans and other loans payable (1)
$73,128
 $73,443
 $73,134
 $1,165,871
 $2,491
 $2,339
 $1,390,406
Senior notes (1)
$
 $
 $
 $500,000
 $
 $3,350,000
 $3,850,000
300,000
 300,000
 150,000
 750,000
 1,000,000
 6,000,125
 8,500,125
Term loan A (1)
37,356
 37,356
 317,526
 
 
 
 392,238
Term loan B(1)
6,194
 6,194
 6,194
 6,194
 6,194
 583,774
 614,744
Japan term loan (1)
21,400
 21,400
 21,400
 21,400
 321,000
 
 406,600
Mortgage payable (1)
1,060
 1,106
 1,153
 1,203
 1,256
 24,532
 30,310
Other loans payable (1)
1,918
 1,957
 1,997
 2,038
 2,080
 5,944
 15,934
Interest (2)
252,985
 251,717
 250,297
 227,385
 213,697
 514,313
 1,710,394
411,944
 395,556
 379,060
 352,907
 278,214
 600,648
 2,418,329
Capital lease and other financing obligations (3)
161,602
 158,887
 154,764
 153,763
 155,103
 1,520,510
 2,304,629
184,151
 170,592
 169,086
 168,810
 164,886
 1,601,251
 2,458,776
Operating leases (4)
142,854
 138,555
 134,123
 122,781
 114,890
 958,068
 1,611,271
187,280
 179,515
 166,159
 158,115
 147,677
 1,130,494
 1,969,240
Other contractual commitments (5)
446,932
 45,420
 6,460
 14,379
 3,681
 22,430
 539,302
1,129,604
 149,168
 36,839
 25,680
 19,789
 164,090
 1,525,170
Asset retirement obligations (6)
10,511
 5,398
 13,223
 3,596
 3,526
 66,761
 103,015
6,776
 3,801
 3,972
 11,633
 5,582
 64,899
 96,663
$1,082,812
 $667,990
 $907,137
 $1,052,739
 $821,427
 $7,046,332
 $11,578,437
$2,292,883
 $1,272,075
 $978,250
 $2,633,016
 $1,618,639
 $9,563,846
 $18,358,709
_________________________
(1)
Represents principal of senior notes, term loans and other loans payable, as well as premium only.on mortgage payable.
(2)
Represents interest on mortgage payable, senior notes, term loan facilities and other loans payable based on their approximate interest rates as of December 31, 2016.2018, as well as the credit facility fee for the revolving credit facility.
(3)
Represents principal and interest.
(4)
Represents minimum operating lease payments, excluding potential lease renewals.
(5)
Represents unaccrued contractual commitments. Other contractual commitments are described below.
(6)
Represents liability, net of future accretion expense.
In connection with certain of our leases and other contracts requiring deposits, we entered into 3042 irrevocable letters of credit totaling $50.5$68.5 million under the revolving credit facility. These letters of credit were provided in lieu of cash deposits. If the landlords for these IBX leases decide to draw down on these letters of credit triggered by an event of default under the lease, we will be required to fund these letters of credit either through cash collateral or borrowing under the revolving credit facility. These contingent commitments are not reflected in the table above.
We had accrued liabilities related to uncertain tax positions totaling approximately $53.3$106.9 million as of December 31, 2016.2018. These liabilities, which are reflected on our balance sheet, are not reflected in the table above since it is unclear when these liabilities will be paid.
Primarily as a result of our various IBX data center expansion projects, as of December 31, 2016,2018, we were contractually committed for $234.4$687.6 million of unaccrued capital expenditures, primarily for IBX equipment not yet delivered and labor not yet provided in connection with the work necessary to complete construction and open these IBX data centers prior to making them available to customers for installation. This amount, which is expected to be paid during 20172019 and thereafter, is reflected in the table above as “other"other contractual commitments."
We had other non-capital purchase commitments in place as of December 31, 2016,2018, such as commitments to purchase power in select locations and other open purchase orders, which contractually bind us for goods, services or servicesarrangements that may contain

embedded leases to be delivered or provided during 20172019 and beyond. Such other purchase commitments as of December 31, 2016,2018, which total $304.9$837.5 million, are also reflected in the table above as “other"other contractual commitments."

In addition, althoughAdditionally, we are not contractually obligated to do so, we expect to incur additional capital expendituresentered into lease agreements in various locations for a total lease commitment of approximately $634.7$262.2 million, excluding potential lease renewals. These lease agreements will commence between February 2019 and May 2020 with lease terms of 5 to $734.7 million, in addition to the $539.3 million in contractual commitments discussed above as of December 31, 2016, for our various IBX data center expansion projects during 2017 and thereafter in order to complete the work needed to open these IBX data centers. These non-contractual capital expenditures30 years, which are not reflected in the table above. If we so choose, whether due to economic factors or other considerations, we could delay these non-contractual capital expenditure commitments to preserve liquidity.
On January 6, 2017, we borrowed the full amount of the €1.0 billion Term B-2 Loan, which is not reflected in the table above.
Recent Accounting Pronouncements
In 2018, as more fully described in Note 12 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we sold 930,934 shares of our common stock for approximately $388.2 million, net of payment of commissions to the sales agents and estimated equity offering costs under our ATM program launched in 2017 (the "2017 ATM Program"). As of December 31, 2018, no shares remained available for sale under the 2017 ATM Program. In December 2018, we launched another ATM program, under which we may offer and sell from time to time up to an aggregate of $750.0 million of our common stock in "at the market" transactions (the "2018 ATM Program"). As of December 31, 2018, no sales have been made under the 2018 ATM Program.
In July 2018, as more fully described in Note 11 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we entered into an amendment to our existing credit agreement to add a senior unsecured term loan in an aggregate principal amount of ¥47.5 billion (the "JPY Term Loan"). Concurrent with the closing of our JPY Term Loan, we drew down the full ¥47.5 billion of the JPY Term Loan, or approximately $424.7 million, and prepaid the remaining principal of our existing Japanese Yen Term Loan of ¥43.8 billion, or approximately $391.3 million. We recognized a loss on debt extinguishment of $2.2 million during the third quarter of 2018 in connection therewith.
In April 2018, as more fully described in Note 3 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we completed the acquisition of Metronode for a cash purchase price of A$1.034 billion or approximately $804.6 million at the exchange rate in effect on April 18, 2018 (the "Metronode Acquisition"). We accounted for this transaction as a business combination using the acquisition method of accounting. The valuation and purchase accounting of this acquisition have not yet been finalized as of December 31, 2018.
In April 2018, as more fully described in Note 3 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we completed the acquisition of Infomart Dallas for total consideration of approximately $804.0 million (the "Infomart Dallas Acquisition"), consisting of approximately $45.8 million in cash, subject to customary adjustments, and $758.2 million aggregate fair value of 5.000% senior unsecured notes. We accounted for this transaction as a business combination using the acquisition method of accounting. The valuation and purchase accounting of this acquisition have not yet been finalized as of December 31, 2018.
In March 2018, as more fully described in Note 11 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we issued €750.0 million, or approximately $929.9 million in U.S. dollars, at the exchange rate in effect on March 14, 2018, aggregate principal amount of 2.875% senior notes due March 15, 2024. We incurred debt issuance costs of $11.6 million related to the 2.875% Euro Senior Notes due 2024.


Overview
Equinix provides global data center offerings that protect and connect the world's most valued information assets. Global enterprises, financial services companies and content and network service providers rely upon Equinix's leading insight and data centers around the world for the safehousing of their critical IT equipment and the ability to directly connect to the networks that enable today's information-driven economy. The acquisitions of Infomart Dallas and Metronode expanded our total global footprint to 200 IBX data centers across 52 markets around the world. Equinix offers the following solutions: (i) premium data center colocation, (ii) interconnection and exchange and (iii) outsourced IT infrastructure solutions. As of December 31, 2018, we operated or had partner IBX data centers in Brazil, Canada, Colombia and throughout the U.S. in the Americas region; Bulgaria, Finland, France, Germany, Ireland, Italy, the Netherlands, Poland, Portugal, Spain, Sweden, Switzerland, Turkey, the United Arab Emirates and the United Kingdom in the EMEA region; and Australia, China, Hong Kong, Indonesia, Japan and Singapore in the Asia-Pacific region.

 Our data centers in 52 markets around the world are a global platform, which allows our customers to increase information and application delivery performance while significantly reducing costs. This global platform and the quality of our IBX data centers have enabled us to establish a critical mass of customers. As more customers choose our IBX data centers, it benefits their suppliers and business partners to colocate with us as well, in order to gain the full economic and performance benefits of our offerings. These partners, in turn, pull in their business partners, creating a "marketplace" for their services. Our global platform enables scalable, reliable and cost-effective colocation, interconnection and traffic exchange that lowers overall cost and increases flexibility. Our focused business model is built on our critical mass of customers and the resulting "marketplace" effect. This global platform, combined with our strong financial position, continues to drive new customer growth and bookings.

Historically, our market has been served by large telecommunications carriers who have bundled telecommunications products and services with their colocation offerings. The data center market landscape has evolved to include cloud computing/utility providers, application hosting providers and systems integrators, managed infrastructure hosting providers and colocation providers. More than 350 companies provide data center solutions in the U.S. alone. Each of these data center solutions providers can bundle various colocation, interconnection and network offerings and outsourced IT infrastructure solutions. We are able to offer our customers a global platform that reaches 24 countries with proven operational reliability, improved application performance, network choice and a highly scalable set of offerings.
Our utilization rate represents the percentage of our cabinet space billing versus net sellable cabinet space available, taking into account power limitations. Our utilization rates were approximately 81%, as of December 31, 2018, and 80%, excluding the Verizon Data Center, Paris IBX Data Center, Itconic, Zenium data center and IO acquisitions, as of December 31, 2017. Excluding the impact of IBX data center expansion projects that have opened during the last 12 months, our utilization rate would have increased to approximately 83% as of December 31, 2018. Our cabinet utilization rate varies from market to market among our IBX data centers across the Americas, EMEA and Asia-Pacific regions. We continue to monitor the available capacity in each of our selected markets. To the extent we have limited capacity available in a given market, it may limit our ability for growth in that market. We perform demand studies on an ongoing basis to determine if future expansion is warranted in a market. In addition, power and cooling requirements for most customers are growing on a per unit basis. As a result, customers are consuming an increasing amount of power per cabinet. Although we generally do not control the amount of power our customers draw from installed circuits, we have negotiated power consumption limitations with certain high power-demand customers. This increased power consumption has driven us to build out our new IBX data centers to support power and cooling needs twice that of previous IBX data centers. We could face power limitations in our IBX data centers, even though we may have additional physical cabinet capacity available within a specific IBX data center. This could have a negative impact on the available utilization capacity of a given IBX data center, which could have a negative impact on our ability to grow revenues, affecting our financial performance, operating results and cash flows.
Strategically, we will continue to look at attractive opportunities to grow our market share and selectively improve our footprint and offerings. As was the case with our recent expansions and acquisitions, our expansion criteria will be dependent on a number of factors, including but not limited to demand from new and existing customers, quality of the design, power capacity, access to networks, capacity availability in the current market location, amount of incremental investment required by us in the targeted property, lead-time to break even on a free cash flow basis and in-place customers. Like our recent expansions and acquisitions, the right combination of these factors may be attractive to us. Depending on the circumstances, these transactions may require additional capital expenditures funded by upfront cash payments or through long-term financing arrangements in order to bring these properties up to Equinix standards. Property expansion may be in the form of purchases of real property, long-term leasing arrangements or acquisitions. Future purchases, construction or acquisitions may be completed by us or with partners or potential customers to minimize the outlay of cash, which can be significant.

Our business is based on a recurring revenue model comprised of colocation and related interconnection and managed infrastructure offerings. We consider these offerings recurring because our customers are generally billed on a fixed and recurring basis each month for the duration of their contract, which is generally one to three years in length. Our recurring revenues have comprised more than 90% of our total revenues during the past three years. In addition, during any given quarter of the past three years, more than half of our monthly recurring revenue bookings came from existing customers, contributing to our revenue growth. Our largest customer accounted for approximately 3% of our recurring revenues for the years ended December 31, 2018, 2017 and 2016. Our 50 largest customers accounted for approximately 38%, 37% and 36%, respectively, of our recurring revenues for the years ended December 31, 2018, 2017 and 2016.
Our non-recurring revenues are primarily comprised of installation services related to a customer's initial deployment and professional services we perform. These services are considered to be non-recurring because they are billed typically once, upon completion of the installation or the professional services work performed. The majority of these non-recurring revenues are typically billed on the first invoice distributed to the customer in connection with their initial installation. However, revenues from installation services are deferred and recognized ratably over the period of contract term. Additionally, revenue from contract settlements, when a customer wishes to terminate their contract early, is generally treated as a contract modification and recognized ratably over the remaining term of the contract, if any. As a percentage of total revenues, we expect non-recurring revenues to represent less than 10% of total revenues for the foreseeable future.
The largest components of our cost of revenues are depreciation, rental payments related to our leased IBX data centers, utility costs, including electricity, bandwidth access, IBX data center employees' salaries and benefits, including stock-based compensation, repairs and maintenance, supplies and equipment and security services. A majority of our cost of revenues is fixed in nature and should not vary significantly from period to period, unless we expand our existing IBX data centers or open or acquire new IBX data centers. However, there are certain costs that are considered more variable in nature, including utilities and supplies that are directly related to growth in our existing and new customer base. We expect the cost of our utilities, specifically electricity, will generally increase in the future on a per-unit or fixed basis, in addition to the variable increase related to the growth in consumption by our customers. In addition, the cost of electricity is generally higher in the summer months, as compared to other times of the year. To the extent we incur increased utility costs, such increased costs could materially impact our financial condition, results of operations and cash flows. Furthermore, to the extent we incur increased electricity costs as a result of either climate change policies or the physical effects of climate change, such increased costs could materially impact our financial condition, results of operations and cash flows. 
Sales and marketing expenses consist primarily of compensation and related costs for sales and marketing personnel, including stock-based compensation, amortization of contract costs, marketing programs, public relations, promotional materials and travel, as well as bad debt expense and amortization of customer relationship intangible assets.
General and administrative expenses consist primarily of salaries and related expenses, including stock-based compensation, accounting, legal and other professional service fees, and other general corporate expenses, such as our corporate regional headquarters office leases and some depreciation expense.
We expect our cost of revenues, sales and marketing expenses and general and administrative expenses to grow in absolute dollars in connection with our business growth. We may periodically see a higher cost of revenues as a percentage of revenue when a large expansion project opens or is acquired, before it starts generating any meaningful revenue. Furthermore, in relation to cost of revenues, the Americas region has a lower cost of revenues as a percentage of revenue than either EMEA or Asia-Pacific. This is due to both the increased scale and maturity of the Americas region, compared to either the EMEA or Asia-Pacific region, as well as a higher cost structure outside of the Americas, particularly in EMEA. We expect the trend that the Americas having the lowest cost of revenues as a percentage of revenues to continue. As a result, to the extent that revenue growth outside the Americas grows in greater proportion than revenue growth in the Americas, our overall cost of revenues as a percentage of revenues may increase in future periods. Sales and marketing expenses may periodically increase as a percentage of revenues as we continue to scale our operations by investing in sales and marketing initiatives to further increase our revenue, including the hiring of additional headcount and new product innovations. General and administrative expenses may also periodically increase as a percentage of revenues as we continue to grow our business.
Taxation as a REIT
We elected to be taxed as a REIT for federal income tax purposes beginning with our 2015 taxable year. As of December 31, 2018, our REIT structure included all of our data center operations in the U.S., Canada, Japan, and the data center operations in EMEA with the exception of Bulgaria, United Arab Emirates and a portion of Turkey. Our data center operations in other jurisdictions are operated as TRSs.

As a REIT, we generally are permitted to deduct from our federal taxable income the dividends we pay to our stockholders (including, for this purpose, the value of any deemed distributions attributable to anti-dilution adjustments made with respect to our 4.75% convertible subordinated notes prior to their maturity in 2016). The income represented by such dividends is not subject to federal income tax at the entity level but is taxed, if at all, at the stockholder level. Nevertheless, the income of our TRSs which hold our U.S. operations that may not be REIT compliant is subject, as applicable, to federal and state corporate income tax. Likewise, our foreign subsidiaries continue to be subject to foreign income taxes in jurisdictions in which they hold assets or conduct operations, regardless of whether held or conducted through TRSs or through QRSs. We are also subject to a separate corporate income tax on any gain recognized from a sale of a REIT asset where our basis in the asset is determined by reference to the basis of the asset in the hands of a C corporation (such as (i) an asset that we held as of the effective date of our REIT election, that is, January 1, 2015, or (ii) an asset held by us or a QRS following the liquidation or other conversion of a former TRS). This built-in-gains tax is generally applicable to any disposition of such an asset during the five-year period after the date we first owned the asset as a REIT asset (e.g., January 1, 2015 in the case of REIT assets we held at the time of our REIT conversion), to the extent of the built-in-gain based on the fair market value of such asset on the date we first held the asset as a REIT asset. If we fail to remain qualified for federal income tax as a REIT, we will be subject to federal income tax at regular corporate tax rates. Even if we remain qualified for federal income tax as a REIT, we may be subject to some federal, state, local and foreign taxes on our income and property in addition to taxes owed with respect to our TRSs' operations. In particular, while state income tax regimes often parallel the federal income tax regime for REITs, many states do not completely follow federal rules and some may not follow them at all.
On each of March 21, June 20, September 19, and December 12, 2018, we paid quarterly cash dividends of $2.28 per share. We expect these quarterly and other applicable distributions to equal or exceed the REIT taxable income that we recognized in 2018.
On December 22, 2017, the United States enacted legislation commonly referred to as the Tax Cuts and Jobs Act ("TCJA") which amended U.S. federal income tax laws. The TCJA retained the REIT regime but contained many significant changes that impact a REIT's taxable income subject to distribution, particularly a REIT with global operations. As of the end of 2018, we have finalized the analysis of the major tax impact to our business by the new tax legislation. Based on our current assessment, which is subject to further interpretation and guidance on the new tax legislation, we believe that we can continue to meet all the REIT compliance requirements in the foreseeable future and that the TCJA changes are not expected to meaningfully increase our tax liabilities in the U.S. because we expect to fully distribute our REIT taxable income.
We continue to monitor our REIT compliance in order to maintain our qualification for federal income tax as a REIT. For this and other reasons, as necessary, we may convert some of our data center operations in other countries into the REIT structure in future periods.
Results of Operations
Our results of operations for the year ended December 31, 2018 include the results of operations from the Metronode Acquisition from April 18, 2018 and the Infomart Dallas Acquisition from April 2, 2018. Our results of operations for the year ended December 31, 2017 include the results of operations of the IO Acquisition from February 3, 2017, the Verizon Data Center Acquisition from May 1, 2017, the Zenium data center acquisition from October 6, 2017 and the Itconic Acquisition from October 9, 2017. Our results of operations for the year ended December 31, 2016 include the results of operations of TelecityGroup from January 15, 2016 and the Paris IBX Data Center Acquisition from August 1, 2016.
In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers ("ASU 2014-09") and issued subsequent amendments to the initial guidance, collectively referred as "Topic 606." On January 1, 2018, as more fully described in Note 1 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we adopted Topic 606. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while the comparative information has not been restated and continues to be reported under accounting standards in effect for those periods. Under the new standard, we recognize installation revenue over the contract period rather than over the estimated installation life as under the prior revenue standard. We also capitalize and amortize certain costs to obtain contracts, rather than expense them immediately as under the previous standard.
Discontinued Operations
We present the results of operations associated with the TelecityGroup data centers that were divested in July 2016 as discontinued operations in our consolidated statement of operations for the year ended December 31, 2016. We did not have any discontinued operations activity during 2018 or 2017.

Years ended December 31, 2018 and 2017
Revenues.    Our revenues for the years ended December 31, 2018 and 2017 were generated from the following revenue classifications and geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas:           
Recurring revenues$2,357,326
 46% $2,062,352
 47% 14% 15%
Non-recurring revenues127,408
 3% 110,408
 3% 15% 16%
 2,484,734
 49% 2,172,760
 50% 14% 15%
EMEA:           
Recurring revenues1,467,492
 29% 1,266,971
 29% 16% 12%
Non-recurring revenues95,145
 2% 79,285
 2% 20% 16%
 1,562,637
 31% 1,346,256
 31% 16% 12%
Asia-Pacific:           
Recurring revenues951,684
 19% 790,797
 18% 20% 19%
Non-recurring revenues72,599
 1% 58,615
 1% 24% 23%
 1,024,283
 20% 849,412
 19% 21% 20%
Total:           
Recurring revenues4,776,502
 94% 4,120,120
 94% 16% 15%
Non-recurring revenues295,152
 6% 248,308
 6% 19% 18%
 $5,071,654
 100% $4,368,428
 100% 16% 15%
Americas Revenues. Revenues for our Americas region for the year ended December 31, 2018 included approximately $210.2 million of incremental revenues from the Verizon Data Center Acquisition, which closed in May 2017, and the Infomart Dallas Acquisition, which closed in April 2018. During both the years ended December 31, 2018 and 2017, our revenues from the United States, the largest revenue contributor in the Americas region for the periods, represented approximately 91% of the regional revenues. Excluding incremental revenues attributable to the Infomart Dallas and Verizon Data Center Acquisitions, growth in Americas revenues was primarily due to (i) $69.3 million of revenues generated from our recently-opened IBX data centers or IBX data center expansions in the Chicago, Culpeper, Denver, Houston, Miami, Rio de Janeiro, São Paulo, Seattle, Silicon Valley, and Washington, D.C. areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2018, the U.S. dollar was generally stronger relative to the Brazilian real than during the year ended December 31, 2017, resulting in approximately $23.6 million of unfavorable foreign currency impact on our Americas revenues during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
EMEA Revenues.  Revenues for our EMEA region for the year ended December 31, 2018 included approximately $52.6 million of incremental revenues from the IO Acquisition, which closed in February 2017, and the Itconic and Zenium data center acquisitions, which closed in October 2017. Our revenues from the U.K., our largest revenue contributor in the EMEA region, represented 30% of regional revenues for both the years ended December 31, 2018 and 2017. Excluding incremental revenues attributable to the IO, Itconic, and Zenium acquisitions, our EMEA revenue growth was primarily due to (i) approximately $73.2 million of revenues from our recently-opened IBX data centers or IBX data center expansions in the Amsterdam, Frankfurt, London and Paris metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $54.4 million of net favorable foreign currency impact to our EMEA revenues primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017.
Asia-Pacific Revenues.  Revenues for our Asia-Pacific region for the year ended December 31, 2018 included approximately $48.0 million of incremental revenues from the Metronode Acquisition, which closed in April 2018. Our revenues from Japan and Singapore, the largest revenue contributors in the Asia-Pacific region for the period, combined represented approximately 60% and 63% for the years ended December 31, 2018 and 2017, respectively. Excluding incremental revenues attributable to the Metronode Acquisition, our Asia-Pacific revenue growth was primarily due to (i) approximately $59.2 million of revenues generated from our recently-opened IBX data center expansions in the Hong Kong, Melbourne, Osaka, and Singapore metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31,

2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately $7.7 million of net favorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
Cost of Revenues.  Our cost of revenues for the years ended December 31, 2018 and 2017 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$1,113,854
 43% $958,845
 44% 16% 18%
EMEA916,751
 35% 749,933
 34% 22% 18%
Asia-Pacific574,870
 22% 484,371
 22% 19% 18%
Total$2,605,475
 100% $2,193,149
 100% 19% 18%
  Years Ended December 31,
  2018 2017
Cost of revenues as a percentage of revenues:    
Americas 45% 44%
EMEA 59% 56%
Asia-Pacific 56% 57%
Total 51% 50%
Americas Cost of Revenues. Cost of revenues for our Americas region for the year ended December 31, 2018 included approximately $115.4 million of incremental cost of revenues from the Verizon Data Center Acquisition and the Infomart Dallas Acquisition. Excluding the impact from these acquisitions, the increase in our Americas cost of revenues for the year ended December 31, 2018 compared to the year ended December 31, 2017 was primarily due to (i) $10.6 million higher depreciation expense primarily due to our IBX data center expansion activity; (ii) $7.6 million of higher taxes, licenses, insurance, and other cost of sales in support of our business growth; (iii) $5.8 million of higher rent and facility costs due to new fuel cell leases and IBX growth  and (iv) $15.5 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and higher headcount growth (1,399 Americas cost of revenues employees as of December 31, 2018 versus 1,339 as of December 31, 2017). During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $15.1 million of net favorable foreign currency impact to our Americas cost of revenues primarily due to a generally stronger U.S. dollar relative to the Brazilian real during the year ended December 31, 2018 compared to the year ended December 31, 2017. We expect our Americas cost of revenues to increase as we continue to grow our business, including results from recent acquisitions.
EMEA Cost of Revenues. Cost of revenues for our EMEA region for the year ended December 31, 2018 included $41.5 million of incremental cost of revenues from the IO, Itconic, and Zenium acquisitions. Excluding incremental cost of revenues attributable to these acquisitions, the increase in our EMEA cost of revenues was primarily due to (i) $47.3 million of higher utilities costs driven by IBX expansions, increased usage and price increases; (ii) $18.4 million of higher office expenses, rent and facility costs, and repair and maintenance primarily due to an increase in expansion activity and usage due to our business growth; (iii) $49.3 million of higher depreciation and accretion expenses, primarily driven by expansion activity in Amsterdam, Frankfurt, London, and Paris and (iv) $19.7 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and higher headcount growth (1,490 EMEA cost of revenues employees as of December 31, 2018 versus 1,375 as of December 31, 2017), partially offset by an $11.8 million reduction in other cost of sales, primarily due to realized cash flow hedge gains. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $30.0 million of net unfavorable foreign currency impact to our EMEA cost of revenues, primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017. We expect EMEA cost of revenues to increase as we continue to grow our business.
Asia-Pacific Cost of Revenues. Cost of revenues for our Asia-Pacific region for the year ended December 31, 2018 included approximately $33.2 million incremental cost of revenues from the Metronode Acquisition. Excluding the impact from the Metronode Acquisition, the increase in our Asia-Pacific cost of revenues for the year ended December 31, 2018 was primarily due to (i) $28.4 million of higher utilities costs, rent and facility costs and repairs and maintenance expense, primarily driven by higher usage in Australia, Hong Kong, Japan and Singapore; (ii) $16.1 million of higher depreciation and accretion expense, primarily from IBX expansions in Australia, Hong Kong, Japan and Singapore; (iii) $9.7 million of higher other cost of sales, primarily due

to custom service orders, and (iv) $3.9 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and headcount growth (884 Asia-Pacific cost of revenues employees as of December 31, 2018 versus 828 as of December 31, 2017). During the year ended December 31, 2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately $3.3 million of net unfavorable foreign currency impact to our Asia-Pacific cost of revenues in 2018. We expect Asia-Pacific cost of revenues to increase as we continue to grow our business, including the impact from the Metronode acquisition.
Sales and Marketing Expenses. Our sales and marketing expenses for the years ended December 31, 2018 and 2017 were split among the following geographic regions (dollars in thousands):
 Years ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$391,386
 62% $349,666
 60% 12% 13%
EMEA152,336
 24% 153,811
 26% (1)% (4)%
Asia-Pacific89,980
 14% 78,247
 14% 15% 14%
Total$633,702
 100% $581,724
 100% 9% 8%
 Years Ended December 31,
 2018 2017
Sales and marketing expenses as a percentage of revenues:   
Americas16% 16%
EMEA10% 11%
Asia-Pacific9% 9%
Total12% 13%
Americas Sales and Marketing Expenses. The increase in our Americas sales and marketing expenses was primarily due to (i) $38.1 million of amortization of the acquired intangible assets in connection with the Verizon Data Center Acquisition and (ii) $5.4 million of higher consulting expenses to support our growth. During the year ended December 31, 2018, the impact of foreign currency fluctuations to our Americas sales and marketing expenses was not significant when compared to average exchange rates during the year ended December 31, 2017. We anticipate that we will continue to invest in Americas sales and marketing initiatives and expect our Americas sales and marketing expenses to continue to increase as we continue to grow our business, including the impact from recent acquisitions.
EMEA Sales and Marketing Expenses. Our EMEA sales and marketing expense did not materially change during the year ended December 31, 2018 as compared to the year ended December 31, 2017. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $4.8 million of net unfavorable foreign currency impact to our EMEA sales and marketing expenses primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017. Over the past several years, we have been investing in our EMEA sales and marketing initiatives to further increase our revenues. We expect our EMEA sales and marketing expenses to continue to increase as we continue to grow our business.
Asia-Pacific Sales and Marketing Expenses. The increase in our Asia-Pacific sales and marketing expense is primarily due to (i) $4.1 million of amortization of the acquired intangible assets in connection with the Metronode Acquisition; (ii) $4.1 million of higher compensation costs, including sales compensation, general salaries, bonuses and stock-based compensation and headcount growth (306 Asia-Pacific sales and marketing employees as of December 31, 2018, versus 278 as of December 31, 2017) and (iii) $4.4 million of higher bad debt expense, primarily due to customer recovery in the prior year. For the year ended December 31, 2018, the impact of foreign currency fluctuations to our Asia-Pacific sales and marketing expenses was not significant when compared to average exchange rates for the year ended December 31, 2017. Over the past several years, we have been investing in our Asia-Pacific sales and marketing initiatives and expect our Asia-Pacific sales and marketing expenses to continue to increase as we continue to grow our business, including the impact from the Metronode acquisition.

General and Administrative Expenses. Our general and administrative expenses for the years ended December 31, 2018 and 2017 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$554,169
 67% $472,942
 63% 17% 18%
EMEA184,364
 22% 195,430
 26% (6)% (8)%
Asia-Pacific88,161
 11% 77,534
 11% 14% 12%
Total$826,694
 100% $745,906
 100% 11% 10%
 Years Ended December 31,
 2018 2017
General and Administrative expenses as a percentage of revenues:   
Americas22% 22%
EMEA12% 15%
Asia-Pacific9% 9%
Total16% 17%
Americas General and Administrative Expenses. The increase in our Americas general and administrative expenses was primarily due to (i) $25.8 million of higher compensation costs, including general salaries, bonuses, stock-based compensation, and headcount growth (1,389 Americas general and administrative employees as of December 31, 2018 versus 1,207 as of December 31, 2017); (ii) $18.1 million of higher office, rent and facilities costs and consulting expenses in support of our business growth; (iii) $3.8 million of higher recruiting, training, and travel expenses to support employee development and (iv) $30.2 million of higher depreciation expense associated with the implementation of certain systems, including revenue, data management and cloud exchange systems, to improve our quote to order and billing processes and to support the integration and growth of our business. During the year ended December 31, 2018, the impact of foreign currency fluctuations to our Americas general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2017. Over the course of the past year, we have been investing in our Americas general and administrative functions to scale our business effectively for growth, which has included additional investments in improving our back office systems. We expect our current efforts to improve our back office systems will continue over the next several years. Going forward, although we are carefully monitoring our spending, we expect Americas general and administrative expenses to increase as we continue to further scale our operations to support our growth, including these investments in our back office systems, investments to maintain our qualification for taxation as a REIT and recent acquisitions and to comply with new accounting standards.
EMEA General and Administrative Expenses. The decrease in our EMEA general and administrative expenses was primarily due to (i) $23.1 million of lower amortization expense as a result of fully amortizing the TelecityGroup trade names during the third quarter of 2017; (ii) $5.2 million decrease due to realized cash flow hedge gains and (iii) $5.1 million lower outside services consulting expense, partially offset by an increase of $19.6 million of compensation expenses, including general salaries, bonuses, and stock-based compensation and headcount growth (830 EMEA general and administrative employees as of December 31, 2018 versus 807 as of December 31, 2017). During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $5.2 million of net unfavorable foreign currency impact to our EMEA general and administrative expenses primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017. Over the course of the past year, we have been investing in our EMEA general and administrative functions as a result of our ongoing efforts to scale this region effectively for growth. Going forward, although we are carefully monitoring our spending, we expect our EMEA general and administrative expenses to increase in future periods as we continue to scale our operations to support our growth.
Asia-Pacific General and Administrative Expenses. The increase in our Asia-Pacific general and administrative expense was primarily due to $9.7 million of higher compensation costs, including general salaries, bonuses, stock-based compensation and headcount growth (482 Asia-Pacific general and administrative employees as of December 31, 2018 versus 453 as of December 31, 2017). For the year ended December 31, 2018, the impact of foreign currency fluctuations on our Asia-Pacific general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2017. Going forward, although we are carefully monitoring our spending, we expect Asia-Pacific general and administrative expenses to increase as we continue to support our growth, including the impact from the Metronode acquisition.

Acquisition Costs.  During the year ended December 31, 2018, we recorded acquisition costs totaling $34.4 million primarily in the Asia-Pacific and Americas regions, due to our acquisitions of Metronode and Infomart Dallas. During the year ended December 31, 2017, we recorded acquisition costs totaling $38.6 million, primarily in the Americas region, due to the Verizon Data Center Acquisition.
Impairment Charges. We did not have impairment charges during the years ended December 31, 2018 and 2017.
Gain on Asset Sales. During the year ended December 31, 2018, we recorded a gain on asset sales of $6.0 million primarily relating to the sale of a data center in Frankfurt. We did not have any gain on asset sales during the year ended December 31, 2017.
Income from Operations. Our income from operations for the years ended December 31, 2018 and 2017 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$412,610
 42% $363,220
 45% 14% 15%
EMEA312,163
 32% 237,854
 29% 31% 25%
Asia-Pacific252,610
 26% 207,940
 26% 21% 20%
Total$977,383
 100% $809,014
 100% 21% 19%
Americas Income from Continuing Operations. The increase in our Americas income from operations was primarily due to higher income generated from acquisitions, higher revenues as a result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2018, the U.S. dollar was generally stronger relative to the Brazilian real than during the year ended December 31, 2017, resulting in approximately $4.0 million of unfavorable foreign currency impact on our Americas income from continuing operations during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
EMEA Income from Continuing Operations. The increase in our EMEA income from operations was primarily due to higher revenues as a result of our IBX data center expansion activity and acquisitions, as described above, as well as lower sales and marketing and general and administrative expenses as a percentage of revenues, which was partially due to lower amortization costs as a result of fully amortizing the TelecityGroup trade names during the third quarter of 2017. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $14.5 million of net favorable foreign currency impact to our EMEA income from continuing operations primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017.
Asia-Pacific Income from Continuing Operations. The increase in our Asia-Pacific income from operations was primarily due to higher income generated from the Metronode Acquisition, higher revenues as a result of our IBX data center expansion activity and organic growth as described above and lower cost of sales as a percentage of revenues. During the year ended December 31, 2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately $3.2 million of favorable foreign currency impact on our Asia-Pacific income from continuing operations during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
Interest Income. Interest income was $14.5 million and $13.1 million for the years ended December 31, 2018 and 2017, respectively. The average yield for the year ended December 31, 2018 was 1.24% versus 0.64% for the year ended December 31, 2017.
Interest Expense.  Interest expense increased to $521.5 million for the year ended December 31, 2018 from $478.7 million for the year ended December 31, 2017. The increase in interest expense was primarily attributable to our issuance of the €750.0 million 2.875% Euro Senior Notes due 2024 in March 2018 and $750 million 5.000% Infomart Senior Notes in April 2018. The increase was partially offset by lower weighted average interest rates during the year ended December 31, 2018 as compared to the year ended December 31, 2017. During the years ended December 31, 2018 and 2017, we capitalized $19.9 million and $22.6 million, respectively, of interest expense to construction in progress. We expect to incur higher interest expense in future periods in connection with additional indebtedness that we incurred during 2018 and as a result of the increasing interest rates.
Other Off-Balance-Sheet ArrangementsIncome (Expense). We recorded net other income of $14.0 million and $9.2 million for the years ended December 31, 2018 and 2017, respectively, primarily due to foreign currency exchange gains and losses during the periods.
Loss on Debt Extinguishment. We recorded $51.4 million net loss on debt extinguishment during the year ended December 31, 2018, comprised of (i) $17.1 million of loss on debt extinguishment as a result of amendments to leases impacting the related

financing obligations; (ii) $19.5 million of loss on debt extinguishment from the settlement of financing obligations as a result of the Infomart Dallas Acquisition; (iii) $12.6 million of loss on debt extinguishment as a result of the settlement of financing obligations for properties purchased and (iv) $2.2 million of loss on debt extinguishment as a result of the redemption of the Japanese Yen Term Loan. During the year ended December 31, 2017, we recorded $65.8 million net loss on debt extinguishment comprised of (i) $14.6 million of loss on debt extinguishment from the early redemption of the senior notes; (ii) $22.5 million of loss on debt extinguishment from the redemption of term loans under the previously outstanding credit facility; (iii) $16.7 million of loss on debt extinguishment as a result of amendments to leases and financing obligations and (iv) $12.0 million of loss on debt extinguishment from the settlement of financing obligations as a result of properties purchased.
Income Taxes. We operate as a REIT for federal income tax purposes. As a REIT, we are generally not subject to federal income taxes on our taxable income distributed to stockholders. We intend to distribute or have distributed the entire taxable income generated by the operations of our QRSs for the years ended December 31, 2018 and December 31, 2017, respectively. As such, other than tax attributable to built-in-gains recognized and withholding taxes, no provision for U.S. income taxes for the QRSs has been included in the accompanying consolidated financial statements for the years ended December 31, 2018 and 2017.
We have made TRS elections for some of our subsidiaries in and outside the U.S. In general, a TRS may provide services that would otherwise be considered impermissible for REITs to provide and may hold assets that REITs cannot hold directly. U.S. income taxes for the TRS entities located in the U.S. and foreign income taxes for our foreign operations regardless of whether the foreign operations are operated as QRSs or TRSs have been accrued, as necessary, for the years ended December 31, 2018 and 2017.
For the years ended December 31, 2018 and 2017, we recorded $67.7 million and $53.9 million of income tax expenses, respectively. Our effective tax rates were 15.6% and 18.8%, respectively, for the years ended December 31, 2018 and 2017. The decrease in the effective tax rate in 2018 as compared to 2017 is primarily due to a release of valuation allowance in the current period as a result of a legal entity reorganization in our Americas region.
Adjusted EBITDA. Adjusted EBITDA is a key factor in how we assess the operating performance of our segments and develop regional growth strategies such as IBX data center expansion decisions. We define adjusted EBITDA as income or loss from operations plus depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs and gain on asset sales. See "Non-GAAP Financial Measures" below for more information about adjusted EBITDA and a reconciliation of adjusted EBITDA to income or loss from operations. Our adjusted EBITDA for the years ended December 31, 2018 and 2017 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$1,183,831
 49% $1,034,694
 51% 14% 15%
EMEA698,280
 29% 582,697
 28% 20% 15%
Asia-Pacific531,129
 22% 434,650
 21% 22% 21%
Total$2,413,240
 100% $2,052,041
 100% 18% 17%
Americas Adjusted EBITDA. The increase in our Americas adjusted EBITDA was primarily due to the Verizon Data Center Acquisition and the Infomart Dallas Acquisition, higher revenues as a result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2018, currency fluctuations resulted in approximately $9.6 million of net unfavorable foreign currency impact on our Americas adjusted EBITDA primarily due to the U.S. dollar being generally stronger relative to the Brazilian real during the year ended December 31, 2018 compared to the year ended December 31, 2017.
EMEA Adjusted EBITDA. The increase in our EMEA adjusted EBITDA was primarily due to higher revenues as a result of our IBX data center expansion activity and acquisitions, as described above, as well as lower sales and marketing and general and administrative expenses as a percentage of revenues. During the year ended December 31, 2018, currency fluctuations resulted in approximately $26.6 million of net favorable foreign currency impact to our EMEA adjusted EBITDA primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017.
Asia-Pacific Adjusted EBITDA. The increase in our Asia-Pacific adjusted EBITDA was primarily due to the Metronode Acquisition, higher revenues as a result of our IBX data center expansion activity and organic growth as described above and lower cost of revenues as a percentage of revenues. During the year ended December 31, 2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately

$4.4 million of net favorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2018 when compared to average exchange rates during the year ended December 31, 2017.
Years Ended December 31, 2017 and 2016
Revenues.    Our revenues for the years ended December 31, 2017 and 2016 were generated from the following revenue classifications and geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas:           
Recurring revenues$2,062,352
 47% $1,593,084
 44% 29% 29%
Non-recurring revenues110,408
 3% 86,465
 3% 28% 27%
 2,172,760
 50% 1,679,549
 47% 29% 29%
EMEA:           
Recurring revenues1,266,971
 29% 1,106,652
 31% 14% 15%
Non-recurring revenues79,285
 2% 64,687
 1% 23% 23%
 1,346,256
 31% 1,171,339
 32% 15% 15%
Asia-Pacific:           
Recurring revenues790,797
 18% 717,638
 20% 10% 11%
Non-recurring revenues58,615
 1% 43,463
 1% 35% 36%
 849,412
 19% 761,101
 21% 12% 12%
Total:           
Recurring revenues4,120,120
 94% 3,417,374
 95% 21% 21%
Non-recurring revenues248,308
 6% 194,615
 5% 28% 28%
 $4,368,428
 100% $3,611,989
 100% 21% 21%
Americas Revenues. Revenues for our Americas region for the year ended December 31, 2017 included approximately $359.1 million of revenues attributable to the Verizon Data Center Acquisition. During the years ended December 31, 2017 and 2016, our revenues from the United States, the largest revenue contributor in the Americas region for the periods, represented approximately 91% and 92%, respectively, of the regional revenues. Excluding revenues attributable to the Verizon Data Center Acquisition, growth in Americas revenues was primarily due to (i) $34.5 million of revenue generated from our recently-opened IBX data centers or IBX data center expansions in the Dallas, New York, São Paulo, Silicon Valley, Toronto and Washington, D.C. areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2017, the U.S. dollar was generally weaker relative to the Canadian dollar and Brazilian real than during the year ended December 31, 2016, resulting in approximately $11.4 million of favorable foreign currency impact on our Americas revenues during the year ended December 31, 2017 when compared to 2016 using average exchange rates.
EMEA Revenues.  As compared to 2016, revenues for our EMEA region for the year ended December 31, 2017 include $47.2 million of incremental revenues from acquisitions including the TelecityGroup Acquisition, which closed on January 15, 2016, the Paris IBX Data Center Acquisition, which closed in August 2016, the IO Acquisition, which closed in February 2017, and the Itconic and Zenium data center acquisitions, which closed in October 2017. Our revenues from the U.K., our largest revenue contributor in the EMEA region, represented 30% of regional revenues for the year ended December 31, 2017 compared to 32% of regional revenues for the year ended December 31, 2016. Excluding the acquisitions, our EMEA revenue growth was primarily due to (i) approximately $62.3 million of revenue from our IBX data centers or IBX data center expansions in the Amsterdam, Dubai, Dublin, Frankfurt, Helsinki, London, Paris and Zurich metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $4.9 million of net unfavorable foreign currency impact to our EMEA revenues primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Revenues.  Our revenues from Japan, the largest revenue contributor in the Asia-Pacific region, represented approximately 34% and 35%, respectively, for the year ended December 31, 2017 and 2016. Our Asia-Pacific revenue growth was primarily due to (i) approximately $42.6 million of revenue generated from our recently-opened IBX data center expansions in

the Hong Kong, Osaka and Sydney metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2017, the U.S. dollar was generally stronger relative to the Japanese Yen than during the year ended December 31, 2016, resulting in approximately $6.8 million of net unfavorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2017 when compared to 2016 using average exchange rates.
Cost of Revenues.  Our cost of revenues for the years ended December 31, 2017 and 2016 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$958,845
 44% $700,544
 38% 37% 36%
EMEA749,933
 34% 653,766
 36% 15% 15%
Asia-Pacific484,371
 22% 466,560
 26% 4% 5%
Total$2,193,149
 100% $1,820,870
 100% 20% 20%
 Years Ended December 31,
 2017 2016
Cost of revenues as a percentage of revenues:   
Americas44% 42%
EMEA56% 56%
Asia-Pacific57% 61%
Total50% 50%
Americas Cost of Revenues. Cost of revenues for our Americas region for the year ended December 31, 2017 included approximately $177.4 million of costs of revenues attributable to the Verizon Data Center Acquisition. Excluding the impact from the Verizon Data Center Acquisition, depreciation expense was $273.0 million and $241.6 million, respectively, for the years ended December 31, 2017 and 2016. The growth in depreciation expense was primarily due to our IBX expansion activity. In addition to the increase in depreciation expense, the increase in our Americas cost of revenues for the year ended December 31, 2017 compared to the year ended December 31, 2016 was primarily due to (i) $30.4 million of higher utilities, repairs and maintenance, property taxes, and other cost of sales in support of our business growth and (ii) $13.2 million of higher compensation costs, including general salaries, bonuses and stock-based compensation (1,114 Americas cost of revenues employees, excluding the Verizon Data Center Acquisition, as of December 31, 2017 versus 1,023 as of December 31, 2016). During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $7.7 million of net unfavorable foreign currency impact to our Americas cost of revenues primarily due to a generally weaker U.S. dollar relative to the Brazilian real and Canadian dollar during the year ended December 31, 2017 compared to the year ended December 31, 2016.
EMEA Cost of Revenues. As compared to 2016, cost of revenues for our EMEA region for the year ended December 31, 2017 included $36.7 million of incremental cost of revenues attributable to acquisitions, including the TelecityGroup Acquisition that closed on January 15, 2016, the Paris IBX Data Center Acquisition that closed in August 2016, the IO Acquisition, which closed in February 2017, and the Itconic and Zenium data center acquisitions, which closed in October 2017. Excluding cost of revenues attributable to these acquisitions, the increase in our EMEA cost of revenues was primarily due to (i) $25.5 million of higher utilities in support of our business growth; (ii) $16.4 million of higher other cost of sales, including third party and managed service expenses; (iii) $10.7 million of higher depreciation expense and (iv) $7.2 million of higher compensation costs, including general salaries, bonuses and stock-based compensation (743 EMEA cost of revenues employees, excluding TelecityGroup employees, as of December 31, 2017 versus 623 as of December 31, 2016). During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $2.7 million of net favorable foreign currency impact to our EMEA cost of revenues, primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Cost of Revenues. The increase in our Asia-Pacific cost of revenues was primarily due to (i) $16.7 million of higher utilities, rent, facility costs, consulting, bandwidth cost, custom service orders and repairs and maintenance costs in support of our business growth and (ii) $3.3 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and headcount growth (828 Asia-Pacific cost of revenues employees as of December 31, 2017 versus 787 as of December 31, 2016), partially offset by a decrease of $3.2 million in depreciation and accretion expenses. During the year ended

December 31, 2017, the U.S. dollar was generally stronger relative to the Japanese Yen than during the year ended December 31, 2016, resulting in approximately $5.0 million of net favorable foreign currency impact to our Asia-Pacific cost of revenues in 2017.
Sales and Marketing Expenses. Our sales and marketing expenses for the years ended December 31, 2017 and 2016 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$349,666
 60% $230,900
 53% 51% 51%
EMEA153,811
 26% 137,887
 31% 12% 14%
Asia-Pacific78,247
 14% 69,955
 16% 12% 13%
Total$581,724
 100% $438,742
 100% 33% 33%
 Years Ended December 31,
 2017 2016
Sales and marketing expenses as a percentage of revenues:   
Americas16% 14%
EMEA11% 12%
Asia-Pacific9% 9%
Total13% 12%
Americas Sales and Marketing Expenses. The increase in our Americas sales and marketing expenses was primarily due to (i) $75.3 million of amortization of the acquired intangible assets in connection with the Verizon Data Center Acquisition; (ii) $33.1 million of higher compensation costs, including sales compensation, general salaries, bonuses and stock-based compensation and headcount growth (608 Americas sales and marketing employees, including those from the Verizon Data Center Acquisition, as December 31, 2017, versus 553 as of December 31, 2016) and (iii) $4.1 million of higher consulting expenses to support our growth. During the year ended December 31, 2017, the impact of foreign currency fluctuations to our Americas sales and marketing expenses was not significant when compared to average exchange rates during the year ended December 31, 2016.
EMEA Sales and Marketing Expenses. The increase in the EMEA sales and marketing expense was primarily due to (i) $12.3 million of higher compensation costs, including sales compensation, general salaries, bonuses, stock-based compensation and headcount growth (378 EMEA sales and marketing employees as of December 31, 2017 versus 349 as of December 31, 2016) and (ii) an increase of $1.8 million in depreciation and amortization expense, primarily due to acquisitions made during the current year. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $2.8 million of net favorable foreign currency impact to our EMEA sales and marketing expenses primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Sales and Marketing Expenses. The increase in the Asia-Pacific sales and marketing expense is primarily due to (i) $6.5 million of higher compensation costs, including sales compensation, general salaries, bonuses, stock-based compensation and a larger average headcount in 2017 as compared to 2016 and (ii) $3.2 million of higher rent expense in support of our growth. For the year ended December 31, 2017, the impact of foreign currency fluctuations to our Asia-Pacific sales and marketing expenses was not significant when compared to average exchange rates for the year ended December 31, 2016.
General and Administrative Expenses. Our general and administrative expenses for the years ended December 31, 2017 and 2016 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$472,942
 63% $391,637
 56% 21% 20%
EMEA195,430
 26% 228,310
 33% (14)% (12)%
Asia-Pacific77,534
 11% 74,614
 11% 4% 5%
Total$745,906
 100% $694,561
 100% 7% 8%

 Years Ended December 31,
 2017 2016
General and Administrative expenses as a percentage of revenues:   
Americas22% 23%
EMEA15% 19%
Asia-Pacific9% 10%
Total17% 19%
Americas General and Administrative Expenses. The increase in our Americas general and administrative expenses was primarily due to (i) $35.5 million of higher compensation costs, including general salaries, bonuses, stock-based compensation, and headcount growth (1,207 Americas general and administrative employees, including those from the Verizon Data Center Acquisition, as of December 31, 2017 versus 934 as of December 31, 2016); (ii) $22.9 million of higher depreciation expense associated with certain systems, including revenue, data management and cloud exchange systems, to improve our quote to order and billing processes and to support the integration and growth of our business and (iii) $16.6 million of higher office expense and consulting cost to support our growth. During the year ended December 31, 2017, the impact of foreign currency fluctuations to our Americas general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2016. Over the course of the past year, we have been investing in our Americas general and administrative functions to scale this region effectively for growth, which has included additional investments in improving our back office systems. We expect our current efforts to improve our back office systems will continue over the next several years. Going forward, although we are carefully monitoring our spending, we expect Americas general and administrative expenses to increase as we continue to further scale our operations to support our growth, including these investments in our back office systems and investments to maintain our qualification for taxation as a REIT.
EMEA General and Administrative Expenses. The decrease in our EMEA general and administrative expenses was primarily due to (i) $20.8 million of lower amortization expenses as a result of fully amortizing the TelecityGroup trade names during the current period and (ii) $8.4 million of lower consulting expenses which was largely due to the completion of TelecityGroup integration activities in the current period. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $5.7 million of net favorable foreign currency impact to our EMEA general and administrative expenses primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016. Over the course of the past year, we have been investing in our EMEA general and administrative functions as a result of our ongoing efforts to scale this region effectively for growth.
Asia-Pacific General and Administrative Expenses. The increase in our Asia-Pacific general and administrative expense was primarily due to $5.0 million of higher compensation costs, including general salaries, bonuses, stock-based compensation and headcount growth (453 Asia-Pacific general and administrative employees as of December 31, 2017 versus 358 as of December 31, 2016), partially offset by a $1.3 million decrease in rent, repair and maintenance expense. For the year ended December 31, 2017, the impact of foreign currency fluctuations on our Asia-Pacific general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2016.
Acquisition Costs.  During the year ended December 31, 2017, we recorded acquisition costs totaling $38.6 million primarily in the Americas and EMEA regions, of which $28.5 million was related to the Verizon Data Center Acquisition during the year ended December 31, 2017 attributable to the Americas region. During the year ended December 31, 2016, we recorded acquisition costs totaling $64.2 million primarily in the EMEA region due to the acquisitions of Telecity and the Paris IBX Data Center, and to a lesser degree, to the Americas region.
Impairment Charges. During the year ended December 31, 2016, we recorded impairment charges totaling $7.7 million in the Asia-Pacific region relating to assets held for sale. We did not have impairment charges during the year ended December 31, 2017.
Gain on Asset Sales. During the year ended December 31, 2016, we recorded a gain on asset sales of $32.8 million primarily relating to the sale of the LD2 data center in the EMEA region and a parcel of land in San Jose in the Americas region. We did not have any gain on asset sales during the year ended December 31, 2017.

Income from Operations. Our income from operations for the years ended December 31, 2017 and 2016 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$363,220
 45% $352,180
 57% 3% 3%
EMEA237,854
 29% 124,853
 20% 91% 85%
Asia-Pacific207,940
 26% 141,706
 23% 47% 47%
Total$809,014
 100% $618,739
 100% 31% 30%
Americas Income from Continuing Operations. Our Americas income from continuing operations did not change significantly year over year. While revenues increased as described above, this was largely offset by (i) an increase of $18.6 million in acquisition costs, which was primarily related to the Verizon Data Center Acquisition; (ii) additional amortization of the acquired intangible assets resulted from the Verizon Data Center Acquisition and (iii) higher cost of revenues and sales and marketing expense as a percentage of revenues. The impact of foreign currency fluctuations on our Americas income from continuing operations for the year ended December 31, 2017 was not significant when compared to the year ended December 31, 2016.
EMEA Income from Continuing Operations. The increase in our EMEA income from continuing operations was primarily due to higher revenues as a result of our IBX data center expansion activity and acquisitions, as described above, as well as lower operating expenses as a percentage of revenues, lower amortization costs as a result of fully amortizing the TelecityGroup trade names during the current period and lower acquisition costs incurred for the year ended December 31, 2017. We incurred $9.2 million of acquisition costs during the year ended December 31, 2017, as compared to $54.5 million of acquisition costs during the year ended December 31, 2016, which was primarily related to our acquisition of TelecityGroup. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $6.4 million of net favorable foreign currency impact to our EMEA income from continuing operations primarily due to a generally weaker U.S. dollar relative to the Euro during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Income from Continuing Operations. The increase in our Asia-Pacific income from continuing operations was primarily due to higher revenues as result of our IBX data center expansion activity and organic growth as described above and lower cost of revenues as a percentage of revenues. The impact of foreign currency fluctuations on our Asia-Pacific income from continuing operations for the year ended December 31, 2017 was not significant when compared to average exchange rates of the year ended December 31, 2016.
Interest Income. Interest income was $13.1 million and $3.5 million for the years ended December 31, 2017 and 2016, respectively. The increase in interest income was driven by higher cash balances and interest yield rates for the year ended December 31, 2017. The average yield for the year ended December 31, 2017 was 0.64% versus 0.37% for the year ended December 31, 2016.
Interest Expense.  Interest expense increased to $478.7 million for the year ended December 31, 2017 from $392.2 million for the year ended December 31, 2016. The increase in interest expense was primarily due to the Term B-2 Loan borrowings of €1.0 billion and the issuance of $1.25 billion of 2027 Senior Notes in March 2017, as well as additional financings such as various capital lease and other financing obligations to support our expansion projects. During the years ended December 31, 2017 and 2016, we capitalized $22.6 million and $13.3 million, respectively, of interest expense to construction in progress.
Other Income (Expense). We recorded net other income of $9.2 million and net expense of $57.9 million for the years ended December 31, 2017 and 2016, respectively, primarily due to foreign currency exchange gains and losses during the periods, including $63.5 million in foreign currency losses recognized in the first quarter of 2016 as a result of completing the acquisition of TelecityGroup.
Loss on Debt Extinguishment. We recorded $65.8 million net loss on debt extinguishment during the year ended December 31, 2017 comprised of (i) $14.6 million of loss on debt extinguishment from the early redemption of the senior notes; (ii) $22.5 million of loss on debt extinguishment from the redemption of term loans under the previously outstanding credit facility; (iii) $16.7 million of loss on debt extinguishment as a result of amendments to leases and financing obligations and (iv) $12.0 million of loss on debt extinguishment from the settlement of financing obligations of properties purchased. During the year ended December 31, 2016, we recorded a $12.3 million loss on debt extinguishment as a result of the settlement of the financing obligations for our Paris 3 IBX data center, a portion of the lender fees associated with the Japanese Yen Term Loan, and the prepayment and termination of our 2012 and 2013 Brazil financings.

Income Taxes. We operate as a REIT for federal income tax purposes. As a REIT, we are generally not subject to federal income taxes on our taxable income distributed to stockholders. We intend to distribute or have distributed the entire taxable income generated by the operations of our REIT and QRSs for the years ended December 31, 2017 and December 31, 2016, respectively. As such, other than built-in-gains recognized and withholding taxes, no provision for U.S. income taxes for the REIT and QRSs has been included in the accompanying consolidated financial statements for the years ended December 31, 2017 and 2016.
We have made TRS elections for some of our subsidiaries in and outside the U.S. In general, a TRS may provide services that would otherwise be considered impermissible for REITs to provide and may hold assets that REITs cannot hold directly. U.S. income taxes for the TRS entities located in the U.S. and foreign income taxes for our foreign operations regardless of whether the foreign operations are operated as QRSs or TRSs have been accrued, as necessary, for the years ended December 31, 2017 and 2016.
For the years ended December 31, 2017 and 2016, we recorded $53.9 million and $45.5 million of income tax expenses, respectively. Our effective tax rates were 18.8% and 28.4%, respectively, for the years ended December 31, 2017 and 2016. The decrease in the effective tax rate in 2017 as compared to 2016 is primarily due to recognition of unrecognized tax benefits related to our tax positions in the U.S. and Brazil as a result of a lapse in statutes of limitations and lower amount of non-deductible expenses within our EMEA operations. This is partially offset by net deferred tax asset remeasurement in the U.S. TRSs due to the corporate income tax rate reduction from 35% to 21% effective January 1, 2018 as a result of the TCJA.
Adjusted EBITDA. Adjusted EBITDA is a key factor in how we assess the operating performance of our segments and develop regional growth strategies such as IBX data center expansion decisions. We define adjusted EBITDA as income or loss from operations plus depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs and gain on asset sales. See "Non-GAAP Financial Measures" below for more information about adjusted EBITDA and a reconciliation of adjusted EBITDA to income or loss from operations. Our adjusted EBITDA for the years ended December 31, 2017 and 2016 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$1,034,694
 51% $787,311
 47% 31% 31%
EMEA582,697
 28% 494,263
 30% 18% 17%
Asia-Pacific434,650
 21% 375,900
 23% 16% 16%
Total$2,052,041
 100% $1,657,474
 100% 24% 24%
Americas Adjusted EBITDA. The increase in our Americas adjusted EBITDA was primarily due to the Verizon Data Center Acquisition, higher revenues as result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2017, currency fluctuations resulted in approximately $4.5 million of net favorable foreign currency impact on our Americas adjusted EBITDA primarily due to the U.S. dollar being generally weaker relative to the Canadian dollar and Brazilian real during the year ended December 31, 2017 compared to the year ended December 31, 2016.
EMEA Adjusted EBITDA. The increase in our EMEA adjusted EBITDA was primarily due to higher revenues as a result of our IBX data center expansion activity and organic growth as described above and lower operating expenses as a percentage of revenues. During the year ended December 31, 2017, currency fluctuations resulted in approximately $2.1 million of net favorable foreign currency impact to our EMEA adjusted EBITDA primarily due to a generally weaker U.S. dollar relative to the Euro during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Adjusted EBITDA. The increase in our Asia-Pacific adjusted EBITDA was primarily due to higher revenues as a result of our IBX data center expansion activity and organic growth, as described above, and lower cost of revenues as a percentage of revenues. During the year ended December 31, 2017, the U.S. dollar was generally stronger relative to the Japanese Yen than during the year ended December 31, 2016, resulting in approximately $2.7 million of net unfavorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2017 when compared to average exchange rates during the year ended December 31, 2016.
Non-GAAP Financial Measures
We provide all information required in accordance with GAAP, but we believe that evaluating our ongoing operating results may be difficult if limited to reviewing only GAAP financial measures. Accordingly, we use non-GAAP financial measures to evaluate our operations.

Non-GAAP financial measures are not a substitute for financial information prepared in accordance with GAAP. Non-GAAP financial measures should not be considered in isolation, but should be considered together with the most directly comparable GAAP financial measures and the reconciliation of the non-GAAP financial measures to the most directly comparable GAAP financial measures. We have presented such non-GAAP financial measures to provide investors with an additional tool to evaluate our operating results in a manner that focuses on what management believes to be our core, ongoing business operations. We believe that the inclusion of these non-GAAP financial measures provides consistency and comparability with past reports and provides a better understanding of the overall performance of the business and ability to perform in subsequent periods. We believe that if we did not provide such non-GAAP financial information, investors would not have all the necessary data to analyze Equinix effectively.
Investors should note that the non-GAAP financial measures used by us may not be the same non-GAAP financial measures, and may not be calculated in the same manner, as those of other companies. Investors should therefore exercise caution when comparing non-GAAP financial measures used by us to similarly titled non-GAAP financial measures of other companies.
Our primary non-GAAP financial measures, adjusted EBITDA and adjusted funds from operations ("AFFO"), exclude depreciation expense as these charges primarily relate to the initial construction costs of our IBX data centers and do not reflect our current or future cash spending levels to support our business. Our IBX data centers are long-lived assets and have an economic life greater than 10 years. The construction costs of an IBX data center do not recur with respect to such data center, although we may incur initial construction costs in future periods with respect to additional IBX data centers, and future capital expenditures remain minor relative to our initial investment. This is a trend we expect to continue. In addition, depreciation is also based on the estimated useful lives of our IBX data centers. These estimates could vary from actual performance of the asset, are based on historical costs incurred to build out our IBX data centers and are not indicative of current or expected future capital expenditures. Therefore, we exclude depreciation from our operating results when evaluating our operations.
In addition, in presenting adjusted EBITDA and AFFO, we exclude amortization expense related to acquired intangible assets. Amortization expense is significantly affected by the timing and magnitude of our acquisitions and these charges may vary in amount from period to period. We exclude amortization expense to facilitate a more meaningful evaluation of our current operating performance and comparisons to our prior periods. We exclude accretion expense, both as it relates to asset retirement obligations as well as accrued restructuring charge liabilities, as these expenses represent costs which we believe are not meaningful in evaluating our current operations. We exclude stock-based compensation expense, as it can vary significantly from period to period based on share price, the timing, size and nature of equity awards. As such, we, and many investors and analysts, exclude stock-based compensation expense to compare our operating results with those of other companies. We also exclude restructuring charges. The restructuring charges relate to our decisions to exit leases for excess space adjacent to several of our IBX data centers, which we did not intend to build out, or our decision to reverse such restructuring charges. We also exclude impairment charges related to certain long-lived assets. The impairment charges are related to expense recognized whenever events or changes in circumstances indicate that the carrying amount of long-lived assets are not recoverable. We also exclude gain or loss on asset sales as it represents profit or loss that is not meaningful in evaluating the current or future operating performance. Finally, we exclude acquisition costs from AFFO and adjusted EBITDA to allow more comparable comparisons of our financial results to our historical operations. The acquisition costs relate to costs we incur in connection with business combinations. Such charges generally are not relevant to assessing the long-term performance of the company. In addition, the frequency and amount of such charges vary significantly based on the size and timing of the acquisitions. Management believes items such as restructuring charges, impairment charges, gain or loss on asset sales and acquisition costs are non-core transactions; however, these types of costs may occur in future periods.

Adjusted EBITDA
We define adjusted EBITDA as income from operations excluding depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs, and gain on asset sales as presented below (in thousands):
 Years Ended December 31,
 2018 2017 2016
Income from operations$977,383
 $809,014
 $618,739
Depreciation, amortization, and accretion expense1,226,741
 1,028,892
 843,510
Stock-based compensation expense180,716
 175,500
 156,148
Acquisition costs34,413
 38,635
 64,195
Impairment charges
 
 7,698
Gain on asset sales(6,013) 
 (32,816)
Adjusted EBITDA$2,413,240
 $2,052,041
 $1,657,474
Our adjusted EBITDA results have improved each year and in each region in total dollars due to the improved operating results discussed earlier in "Results of Operations", as well as the nature of our business model consisting of a recurring revenue stream and a cost structure which has a large base that is fixed in nature also discussed earlier in "Overview".
Funds from Operations ("FFO") and AFFO
We use FFO and AFFO, which are non-GAAP financial measures commonly used in the REIT industry. FFO is calculated in accordance with the standards established by the National Association of Real Estate Investment Trusts. FFO represents net income (loss), excluding gain (loss) from the disposition of real estate assets, depreciation and amortization on real estate assets and adjustments for unconsolidated joint ventures' and non-controlling interests' share of these items.
In presenting AFFO, we exclude certain items that we believe are not good indicators of our current or future operating performance. AFFO represents FFO excluding depreciation and amortization expense on non-real estate assets, accretion, stock-based compensation, restructuring charges, impairment charges, acquisition costs, an installation revenue adjustment, a straight-line rent expense adjustment, a contract cost adjustment, amortization of deferred financing costs and debt discounts and premiums, gain (loss) on debt extinguishment, an income tax expense adjustment, recurring capital expenditures and adjustments for unconsolidated joint ventures' and noncontrolling interests' share of these items and net income (loss) from discontinued operations, net of tax. The adjustments for installation revenue, straight-line rent expense and contract costs are intended to isolate the cash activity included within the straight-lined or amortized results in the consolidated statement of operations. We exclude the amortization of deferred financing costs and debt discounts and premiums as these expenses relate to the initial costs incurred in connection with debt financings that have no current or future cash obligations. We exclude gain (loss) on debt extinguishment since it generally represents the write-off of initial costs incurred in connection with debt financings or a cost that is incurred to reduce future interest costs and is not a good indicator of our current or future operating performance. We include an income tax expense adjustment, which represents the non-cash tax impact due to changes in valuation allowances, uncertain tax positions and deferred taxes that do not relate to current period's operations. We deduct recurring capital expenditures, which represent expenditures to extend the useful life of its IBX data centers or other assets that are required to support current revenues. We also exclude net income (loss) from discontinued operations, net of tax, which represents results that may not recur and are not a good indicator of our current future operating performance.

Our FFO and AFFO were as follows (in thousands):
 Years Ended December 31,
 2018 2017 2016
Net income$365,359
 $232,982
 $126,800
Adjustments:     
Real estate depreciation and amortization883,118
 754,351
 626,564
(Gain) loss on disposition of real estate property4,643
 4,945
 (28,388)
Adjustments for FFO from unconsolidated joint ventures
 85
 113
FFO$1,253,120
 $992,363
 $725,089
 Years Ended December 31,
 2018 2017 2016
FFO$1,253,120
 $992,363
 $725,089
Adjustments:     
Installation revenue adjustment10,858
 24,496
 20,161
Straight-line rent expense adjustment7,203
 8,925
 7,700
Contract cost adjustment(20,358) 
 
Amortization of deferred financing costs and debt discounts and premiums13,618
 24,449
 18,696
Stock-based compensation expense180,716
 175,500
 156,149
Non-real estate depreciation expense140,955
 111,121
 87,781
Amortization expense203,416
 177,008
 122,862
Accretion expense (adjustment)(748) (13,588) 6,303
Recurring capital expenditures(203,053) (167,995) (141,819)
Loss on debt extinguishment51,377
 65,772
 12,276
Acquisition costs34,413
 38,635
 64,195
Impairment charges
 
 7,698
Net income from discontinued operations, net of tax
 
 (12,392)
Income tax expense adjustment(12,420) 371
 3,680
Adjustments for AFFO from unconsolidated joint ventures
 (17) (40)
AFFO$1,659,097
 $1,437,040
 $1,078,339
Our AFFO results have improved due to the improved operating results discussed earlier in "Results of Operations," as well as due to the nature of our business model which consists of a recurring revenue stream and a cost structure which has a large base that is fixed in nature as discussed earlier in "Overview."
Constant Currency Presentation
Our revenues and certain operating expenses (cost of revenues, sales and marketing and general and administrative expenses) from our international operations have represented and will continue to represent a significant portion of our total revenues and certain operating expenses. As a result, our revenues and certain operating expenses have been and will continue to be affected by changes in the U.S. dollar against major international currencies such as the Euro, British pound, Japanese yen, Singapore dollar, Australian dollar and Brazilian real. In order to provide a framework for assessing how each of our business segments performed excluding the impact of foreign currency fluctuations, we present period-over-period percentage changes in our revenues and certain operating expenses on a constant currency basis in addition to the historical amounts as reported. Presenting constant currency results of operations is a non-GAAP financial measure and is not meant to be considered in isolation or as an alternative to GAAP results of operations. However, we have presented this non-GAAP financial measure to provide investors with an additional tool to evaluate our operating results. To present this information, our current and comparative prior period revenues and certain operating expenses from entities reporting in currencies other than the U.S. dollar are converted into U.S. dollars at constant exchange rates rather than the actual exchange rates in effect during the respective periods (i.e. average rates in effect for the year ended December 31, 2017 are used as exchange rates for the year ended December 31, 2018 when comparing the year

ended December 31, 2018 with the year ended December 31, 2017, and average rates in effect for the year ended December 31, 2016 are used as exchange rates for the year ended December 31, 2017 when comparing the year ended December 31, 2017 with the year ended December 31, 2016).
Liquidity and Capital Resources
As of December 31, 2018, our total indebtedness was comprised of debt and financing obligations totaling approximately $11.4 billion consisting of (a) approximately $8,500.1 million of principal from our senior notes, (b) approximately $1,518.9 million from our capital lease and other financing obligations and (c) $1,390.4 million of principal from our loans payable and mortgage (gross of debt issuance cost, debt discount, plus debt premium).
We believe we have sufficient cash, coupled with anticipated cash generated from operating activities, to meet our operating requirements, including repayment of the current portion of our debt as it becomes due, payment of regular dividend distributions and completion of our publicly-announced expansion projects.
On March 14, 2018, we issued €750.0 million 2.875% Euro Senior Notes due 2024. On April 2, 2018, we completed the Infomart Dallas Acquisition for a purchase price of approximately $804.0 million, which was funded with approximately $45.8 million in cash and $758.2 million aggregate fair value of 5.000% senior unsecured notes. On April 18, 2018, we completed the Metronode Acquisition for a cash purchase price of A$1.034 billion or approximately $804.6 million at the exchange rate in effect on April 18, 2018. In July, we drew down the full amount of the JPY Term Loan of ¥47.5 billion, or approximately $424.7 million at the exchange rate effective on July 31, 2018, and prepaid the remaining principal of our existing Japanese Yen Term Loan of ¥43.8 billion or approximately $391.3 million. As of December 31, 2018, we had $610.7 million of cash, cash equivalents and short-term investments, of which approximately $280.1 million was held in the U.S. We believe that our current expansion activities in the U.S. can be funded with our U.S.-based cash and cash equivalents and investments. In addition to our cash and investment portfolio, we have additional liquidity available to us from our $2.0 billion revolving facility and the 2018 ATM Program as described below. 
As of December 31, 2018, we had 42 irrevocable letters of credit totaling $68.5 million issued and outstanding under the revolving facility. We had a total of approximately $1.9 billion of additional liquidity available to us under the Revolving Facility.
For the year ended December 31, 2018, we sold 930,934 shares for approximately $388.2 million, net of payment of commissions to the sales agents and equity offering costs under our 2017 ATM Program. As of December 31, 2018, no shares remain available for sale under the 2017 ATM Program. In December 2018, we launched the 2018 ATM Program to sell up to $750.0 million of common stock in at the market offerings. As of December 31, 2018, no shares have been sold under the 2018 ATM Program.
Besides any further financing activity we may pursue, customer collections are our primary source of cash. While we believe we have a strong customer base, and have continued to experience relatively strong collections, if the current market conditions were to deteriorate, some of our customers may have difficulty paying us and we may experience increased churn in our customer base, including reductions in their commitments to us, all of which could have a material adverse effect on our liquidity. Additionally, we may pursue additional expansion opportunities, primarily the build out of new IBX data centers, in certain of our existing markets which are at or near capacity within the next year, as well as potential acquisitions and joint ventures. While we expect to fund these plans with our existing resources, additional financing, either debt or equity, may be required, and if current market conditions were to deteriorate, we may be unable to secure additional financing, or any such additional financing may only be available to us on unfavorable terms. An inability to pursue additional expansion opportunities will have a material adverse effect on our ability to maintain our desired level of revenue growth in future periods.
Sources and Uses of Cash
 Years Ended December 31,
 2018 2017 2016
 (in thousands)
Net cash provided by operating activities$1,815,426
 $1,439,233
 $1,019,353
Net cash used in investing activities(3,075,528) (5,400,826) (2,045,668)
Net cash provided by (used in) financing activities470,912
 4,607,860
 (897,065)

Operating Activities
Our cash provided by our operations is generated by colocation, interconnection, managed infrastructure and other revenues. Our primary use of cash from our operating activities include compensation and related costs, interest payments, other general corporate expenditures and taxes. The increase in net cash provided by operating activities during 2018 compared to 2017 was primarily due to improved operating results combined with incremental operating cash provided by the acquisitions of Infomart Dallas and Metronode in April 2018 and inclusion of full year operating results of the Verizon Data Center Acquisition, offset by increases in cash paid for cost of revenues, operating expenses, interest expense and income taxes. The increase in net cash provided by operating activities during 2017 compared to 2016 was primarily due to improved operating results combined with incremental operating cash provided by the Verizon Data Center Acquisition and other acquisitions in 2017, offset by timing of collections on our receivables and increases in cash paid for cost of revenues, operating expenses, interest expense and income taxes.
Investing Activities
The decrease in net cash used in investing activities during 2018 compared to 2017 was primarily due to the decrease in spending for business acquisitions of approximately of $3.1 billion, primarily due to the Verizon Data Center Acquisition in 2017, partially offset by $717.4 million of higher capital expenditures and $87.3 million of higher purchases of real estate, primarily as a result of expansion activity. The increase in net cash used in investing activities during 2017 compared to 2016 was primarily due to the increase in spending for business acquisitions of approximately of $2.2 billion, primarily related to the Verizon Data Center Acquisition, a decrease in proceeds from asset sales of $803.8 million, $265.4 million of higher capital expenditures and $67.0 million of higher purchases of real estate, primarily as a result of expansion activity.
During 2019, we anticipate our IBX expansion construction activity will increase from our 2018 levels. If the opportunity to expand is greater than planned and we have sufficient funding to pursue such expansion opportunities, we may further increase the level of capital expenditure to support this growth as well as pursue additional business and real estate acquisitions or joint ventures.
Financing Activities
Net cash provided by financing activities during 2018 was primarily due to (i) the issuance of €750.0 million 2.875% Euro Senior Notes due 2024, or approximately $929.9 million in U.S. dollars, at the exchange rate in effect on March 14, 2018; (ii) borrowing of the JPY Term Loan of ¥47.5 billion, or approximately $424.7 million at the exchange rate effective on July 31, 2018; (iii) sale of 930,934 shares under the 2017 ATM Program, for net proceeds of $388.2 million and (iv) proceeds from employee awards of $50.1 million. The proceeds were partially offset by (i) dividend distributions of $738.6 million; (ii) repayments of capital lease and other financing obligations of $103.8 million; (iii) repayments of mortgage and loans payable of $447.5 million, primarily related to the prepayment of the remaining principal of our existing Japanese Yen Term Loan; (iv) payments of debt extinguishment costs of $20.6 million and (v) payments of debt issuance costs of $12.2 million. 
Net cash provided by financing activities during 2017 was primarily due to (i) borrowings under our previously outstanding credit facility of €1,000.0 million, or approximately $1,059.8 million at the exchange rate in effect on January 6, 2017; (ii) the issuance of $1,250.0 million 2027 Senior Notes; (iii) the issuance of €1,000.0 million 2025 Euro Senior Notes, or approximately $1,199.7 million at the exchange rate on September 20, 2017; (iv) the issuance of €1,000.0 million 2026 Euro Senior Notes, approximately $1,179.0 million at the exchange rate on December 12, 2017; (v) borrowings under our Term Loan Facility of approximately $997.1 million on December 12, 2017, at the exchange rate in effect on that day; (vi) the sale of common stock for net proceeds of $2,481.4 million and (vii) proceeds from employee awards of $41.7 million, partially offset by (i) repayment of the entire $500.0 million principal amount of our 4.875% Senior Notes due 2020; (ii) repayment in full of our previously outstanding credit facility of approximately $2,207.7 million in total at the exchange rate on December 12, 2017; (iii) dividend distributions of $621.5 million; (iv) repayments of capital lease and other financing obligations of $93.5 million and (v) debt issuance costs of $81.0 million.
Net cash used in financing activities during 2016 was primarily due to (i) $1,462.9 million repayment of loans payable including repayment of loans assumed in the TelecityGroup acquisition, bridge term loan and revolving credit facility; (ii) $114.4 million repayment of capital lease and other financing obligations and (iii) $499.5 million payment of dividends, partially offset by $1,168.3 million of proceeds from loans payable including proceeds from our previously outstanding credit facility and Japanese Yen Term Loan.

Debt Obligations
Debt Facilities
We have various guarantor arrangementsdebt obligations with both our directors and officers and third parties, including customers, vendors and business partners. Asmaturity dates ranging from 2019 to 2027 under which a total principal balance of $9.9 billion remained outstanding as of December 31, 2016, there were no significant liabilities recorded for these arrangements.2018. For additionalfurther information on debt obligations, see “Guarantor Arrangements”"Debt Facilities" in Note 1511 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.
Capital Lease and Other Financing Obligations
We have numerous capital lease and other financing obligations with maturity dates ranging from 2019 to 2053 under which a total principal balance of $1,518.9 million remained outstanding as of December 31, 2018 with a weighted average effective interest rate of 7.88%. For further information on our capital leases and other financing obligations, see "Capital Lease and Other Financing Obligations" in Note 10 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.
Critical Accounting PoliciesContractual Obligations and EstimatesOff-Balance-Sheet Arrangements
Our consolidated financial statements are prepared in accordance with generally accepted accounting principles in the U.S. (“GAAP”). The preparationWe lease a majority of our financial statements requires management to make estimatesIBX data centers and assumptions about future events that affect the reported amountscertain equipment under non-cancelable lease agreements expiring through 2065. The following represents our debt maturities, financings, leases and other contractual commitments as of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, management evaluates the accounting policies, assumptions, estimates and judgments to ensure that our consolidated financial statements are presented fairly and in accordance with GAAP. Management bases its assumptions, estimates and judgments on historical experience, current trends and various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. However, because future events and their effects cannot be determined with certainty, actual results may differ from these assumptions and estimates, and such differences could be material.December 31, 2018 (in thousands):
Our significant accounting policies are discussed in Note 1 to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K. Management believes that the following critical accounting policies and estimates are the most critical to aid in fully understanding and evaluating our consolidated financial statements, and they require significant judgments, resulting from the need to make estimates about the effect of matters that are inherently uncertain:
Accounting for income taxes;
Accounting for business combinations;
Accounting for impairment of goodwill; and
Accounting for property, plant and equipment.

 2019 2020 2021 2022 2023 Thereafter Total
Term loans and other loans payable (1)
$73,128
 $73,443
 $73,134
 $1,165,871
 $2,491
 $2,339
 $1,390,406
Senior notes (1)
300,000
 300,000
 150,000
 750,000
 1,000,000
 6,000,125
 8,500,125
Interest (2)
411,944
 395,556
 379,060
 352,907
 278,214
 600,648
 2,418,329
Capital lease and other financing obligations (3)
184,151
 170,592
 169,086
 168,810
 164,886
 1,601,251
 2,458,776
Operating leases (4)
187,280
 179,515
 166,159
 158,115
 147,677
 1,130,494
 1,969,240
Other contractual commitments (5)
1,129,604
 149,168
 36,839
 25,680
 19,789
 164,090
 1,525,170
Asset retirement obligations (6)
6,776
 3,801
 3,972
 11,633
 5,582
 64,899
 96,663
 $2,292,883
 $1,272,075
 $978,250
 $2,633,016
 $1,618,639
 $9,563,846
 $18,358,709

Description(1)

JudgmentsRepresents principal of senior notes, term loans and Uncertainties
other loans payable, as well as premium on mortgage payable.
Effect if Actual Results Differ From Assumptions
Accounting for Income Taxes.(2)

Deferred tax assets
Represents interest on mortgage payable, senior notes, term loan facilities and liabilities are recognizedother loans payable based on the future tax consequences attributable to temporary differences that exist between the financial statement carrying value of assets and liabilities and their respective tax bases, and operating loss and tax credit carryforwards on a taxing jurisdiction basis. We measure deferred tax assets and liabilities using enacted taxapproximate interest rates that will apply in the years in which we expect the temporary differences to be recovered or settled.
The accounting standard for income taxes requires a reduction of the carrying amounts of deferred tax assets by recording a valuation allowance if, based on the available evidence, it is more likely than not (defined by the accounting standard as a likelihood of more than 50%) that such assets will not be realized.

A tax benefit from an uncertain income tax position may be recognized in the financial statements only if it is more likely than not that the position is sustainable, based solely on its technical merits and consideration of the relevant taxing authority’s widely understood administrative practices and precedents.


The valuation of deferred tax assets requires judgment in assessing the likely future tax consequences of events that have been recognized in our financial statements or tax returns. Our accounting for deferred tax consequences represents our best estimate of those future events.

In assessing the need for a valuation allowance, we consider both positive and negative evidence related to the likelihood of realization of the deferred tax assets. If, based on the weight of that available evidence, it is more likely than not the deferred tax assets will not be realized, we record a valuation allowance. The weight given to the positive and negative evidence is commensurate with the extent to which the evidence may be objectively verified.

This assessment, which is completed on a taxing jurisdiction basis, takes into account a number of types of evidence, including the following: 1) the nature, frequency and severity of current and cumulative financial reporting losses, 2) sources of future taxable income and 3) tax planning strategies.

In assessing the tax benefit from an uncertain income tax position, the tax position that meets the more-likely-than-not recognition threshold is initially and subsequently measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information.


As of December 31, 2016 and 2015, we recorded a total of net deferred tax liabilities of $212.0 million and $39.5 million, respectively. As of December 31, 2016 and 2015, we had a total valuation allowance of $29.2 million and $29.9 million, respectively. During the year ended December 31, 2016, we decided to release the valuation allowances related to the historical data center operations in Japan. This reduction in valuation allowance was partially offset by the full valuation allowance setups in Brazil and Canada2018, as well as the change in valuation allowances in Europe due to the TelecityGroup acquisition and integration. During the year ended December 31, 2015, we decided to provide a partial release of valuation allowance against the net deferred tax assets associated with certain foreign operating entities, which resulted in an insignificant income tax benefit in our consolidated results of operations.

For the year ended December 31, 2016, our decision to release our valuation allowances in Japan was due to the tax free merger of Bit-isle into Equinix Japan on January 1, 2017. This results in an overall net deferred tax liability positioncredit facility fee for the surviving entity so that it is more likely than not the deferred tax assets can be realized via deferred tax liability reversal.

Our decision to release our valuation allowances in other jurisdiction was based on our belief that the operations of these jurisdictions had achieved a sufficient level of profitability and will sustain a sufficient level of profitability in the future to support the release of these valuation allowances based on relevant facts and circumstances. However, if our assumptions on the future performance of these jurisdictions prove not to be correct and these jurisdictions are not able to sustain a sufficient level of profitability to support the associated deferred tax assets on our consolidated balance sheet, we will have to impair our deferred tax assets through an additional valuation allowance, which would impact our financial position and results of operations in the period such a determination is made.

Our remaining valuation allowance as of December 31, 2016 was $29.2 million and relates to certain of our subsidiaries outside of the U.S. If and when we reduce our remaining valuation allowances, it will have a favorable impact to our financial position and results of operations in the periods such determinations are made. We will continue to assess the need for our valuation allowances, by country or location, in the future.

As of December 31, 2016 and 2015, we had unrecognized tax benefits of $72.2 million and $30.8 million, respectively, exclusive of interest and penalties. During the year ended December 31, 2016, the unrecognized tax benefits increased by $41.4 million primarily due to the TelecityGroup acquisition and integration. During the year ended December 31, 2015, the unrecognized tax benefits decreased by $5.3 million primarily due to an agreement with Dutch Tax Authorities on the availability of historical loss carry-forwards to offset future profits generated by the Dutch fiscal unity. The unrecognized tax benefits of $72.2 million as of December 31, 2016, if subsequently recognized, will affect our effective tax rate favorably at the time when such benefits are recognized.

revolving credit facility.


Description(3)

JudgmentsRepresents principal and Uncertainties
Effect if Actual Results Differ From Assumptions
Accounting for Business Combinations

In accordance with the accounting standard for business combinations, we allocate the purchase price of an acquired business to its identifiable assets and liabilities based on estimated fair values. The excess of the purchase price over the fair value of the assets acquired and liabilities assumed, if any, is recorded as goodwill.

We use all available information to estimate fair values. We typically engage outside appraisal firms to assist in the fair value determination of identifiable intangible assets such as customer contracts, leases and any other significant assets or liabilities and contingent consideration. We adjust the preliminary purchase price allocation, as necessary, up to one year after the acquisition closing date if we obtain more information regarding asset valuations and liabilities assumed.


Our purchase price allocation methodology contains uncertainties because it requires assumptions and management’s judgment to estimate the fair value of assets acquired and liabilities assumed at the acquisition date. Management estimates the fair value of assets and liabilities based upon quoted market prices, the carrying value of the acquired assets and widely accepted valuation techniques, including discounted cash flows and market multiple analyses. Our estimates are inherently uncertain and subject to refinement. Unanticipated events or circumstances may occur which could affect the accuracy of our fair value estimates, including assumptions regarding industry economic factors and business strategies.


During the last three years, we have completed four business combinations, including the Paris IBX data center acquisition in August 2016, TelecityGroup acquisition in January 2016, Bit-isle acquisition in November 2015, and Nimbo acquisition in January 2015.The purchase price allocation for the TelecityGroup and Bit-isle acquisitions were completed in the fourth quarters of 2016 and 2015, respectively.

We do not believe there is a reasonable likelihood that there will be a material change in the estimates or assumptions we used to complete the purchase price allocations and the fair value of assets acquired and liabilities assumed. However, if actual results are not consistent with our estimates or assumptions, we may be exposed to losses or gains that could be material, which would be recorded in our consolidated statements of operations in 2017 or beyond.

Accounting for Impairment of Goodwill

In accordance with the accounting standard for goodwill and other intangible assets, we perform goodwill impairment reviews annually, or whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable.
During the year ended December 31, 2016, we elected to perform the first step of the two-step goodwill impairment test.

We completed annual goodwill impairment assessment of the Americas reporting unit, the EMEA reporting unit and the Asia-Pacific reporting unit and concluded that the fair values of the reporting units exceeded their carrying values. Goodwill is not considered impaired and we are not required to perform step two of goodwill impairment test.



In 2016, we elected to perform the first step of the two-step goodwill impairment test, we used both the income and market approach. The income approach is based on the ten-year business plan. We apply the weighted-average cost of capital applicable to our reporting units as discount rates. This requires assumptions and estimates derived from a review of our actual and forecasted operating results, approved business plans, future economic conditions and other market data. The market approach requires judgment in determining the appropriate market comparables.

In 2015, we elected to assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value requires assumptions and estimates before performing the two-step goodwill impairment test, the assessment requires assumptions and estimates derived from a review of our actual and forecasted operating results, approved business plans, future economic conditions and other market data.

These assumptions require significant management judgment and are inherently subject to uncertainties.


As of December 31, 2016, goodwill attributable to the Americas reporting unit, the EMEA reporting unit and the Asia-Pacific reporting unit was $469.4 million, $2.3 billion and $235.3 million, respectively.

Future events, changing market conditions and any changes in key assumptions may result in an impairment charge. While we have not recorded an impairment charge against our goodwill to date, the development of adverse business conditions in our Americas, EMEA or Asia-Pacific reporting units, such as higher than anticipated customer churn or significantly increased operating costs, or significant deterioration of our market comparables that we use in the market approach, could result in an impairment charge in future periods. 

Any potential impairment charge against our goodwill would not exceed the amounts recorded on our consolidated balance sheets.
interest.


Description(4)

Judgments and Uncertainties
Represents minimum operating lease payments, excluding potential lease renewals.
Effect if Actual Results Differ From Assumptions
Accounting for Property, Plant and Equipment(5)
Represents unaccrued contractual commitments. Other contractual commitments are described below.

(6)
We have a substantial amount
Represents liability, net of property, plant and equipment recorded on our consolidated balance sheet. The vast majority of our property, plant and equipment represent the costs incurred to build out or acquire our IBX data centers. Our IBX data centers are long-lived assets. The majority of our IBX data centers are in properties that are leased. We depreciate our property, plant and equipment using the straight-line method over the estimated useful lives of the respective assets (subject to the term of the lease in the case of leased assets or leasehold improvements and integral equipment located in leased properties).

Accounting for property, plant and equipment includes determining the appropriate period in which to depreciate such assets, making assessments for leased properties to determine whether they are capital or operating leases, determining if construction projects performed at leased properties trigger build-to-suit lease accounting, assessing such assets for potential impairment, capitalizing interest during periods of construction and assessing the asset retirement obligations required for certain leased properties that require us to return the leased properties back to their original condition at the time we decide to exit a leased property.
While there are numerous judgments and uncertainties involved in accounting for property, plant and equipment that are significant, arriving at the estimated useful life of an asset requires the most critical judgment for us and changes to these estimates would have the most significant impact on our financial position and results of operations. When we lease a property for our IBX data centers, we generally enter into long-term arrangements with initial lease terms of at least 8-10 years and with renewal options generally available to us. During the next several years, a number of leases for our IBX data centers will come up for renewal. As we start approaching the end of these initial lease terms, we will need to reassess the estimated useful lives of our property, plant and equipment. In addition, we may find that our estimates for the useful lives of non-leased assets may also need to be revised periodically. We periodically review the estimated useful lives of certain of our property, plant and equipment and changes in these estimates in the future are possible.

Another area of judgment for us in connection with our property, plant and equipment is related to lease accounting. Most of our IBX data centers are leased. Each time we enter into a new lease or lease amendment for one of our IBX data centers, we analyze each lease or lease amendment for the proper accounting. This requires certain judgments on our part such as establishing the lease term to include in a lease test, establishing the remaining estimated useful life of the underlying property or equipment and estimating the fair value of the underlying property or equipment and establishing the incremental borrowing rate to calculate the present value of the minimum lease payment for the lease test. All of these judgments are inherently uncertain. Different assumptions or estimates could result in a different accounting treatment for a lease.

The assessment of long-lived assets for impairment requires assumptions and estimates of undiscounted and discounted future cash flows. These assumptions and estimates require significant judgment and are inherently uncertain.

We did not revise the estimated useful lives of our property, plant and equipment during the years ended December 31, 2016 and 2015. During the quarter ended December 31, 2014, we revised the estimated useful lives of certain of our property, plant and equipment. As a result, we recorded an insignificant amount of higher depreciation expense for the quarter ended December 31, 2014 due to the reduction of the estimated useful lives of certain of our property, plant and equipment. We undertook this review due to our determination that we were generally using certain of our existing assets over a shorter period than originally anticipated and, therefore, the estimated useful lives of certain of our property, plant and equipment has been shortened. This change was accounted for as a change in accounting estimate on a prospective basis effective October 1, 2014 under the accounting standard for change in accounting estimates.

As of December 31, 2016, 2015 and 2014, we had property, plant and equipment of $7.2 billion, $5.6 billion, and $5.0 billion, respectively. During the years ended December 31, 2016, 2015 and 2014, we recorded depreciation expense of $714.3 million, $498.1 million, and $453.9 million, respectively. Further changes in our estimated useful lives of our property, plant and equipment could have a significant impact on our results of operations.

As of December 31, 2016, 2015 and 2014, we had property, plant and equipment under capital leases and other financing obligations of $1.6 billion, $1.5 billion and $1.1 billion, respectively. During the years ended December 31, 2016, 2015 and 2014, we recorded depreciation expense of $61.9 million, $52.9 million, and $43.2 million, respectively, related to property, plant and equipment under capital leases and other financing obligations. During the years ended December 31, 2016, 2015, and 2014, we recorded interest expense of $120.7 million, $104.4 million, $86.4 million, respectively, related to property, plant, equipment, under capital leases and other financing obligations.

Additionally, during the years ended December 31, 2016, 2015 and 2014, we recorded rent expense of $140.6 million, $101.5 million, and $105.4 million under operating leases.
accretion expense.
In connection with certain of our leases and other contracts requiring deposits, we entered into 42 irrevocable letters of credit totaling $68.5 million under the revolving credit facility. These letters of credit were provided in lieu of cash deposits. If the landlords for these IBX leases decide to draw down on these letters of credit triggered by an event of default under the lease, we will be required to fund these letters of credit either through cash collateral or borrowing under the revolving credit facility. These contingent commitments are not reflected in the table above.
We had accrued liabilities related to uncertain tax positions totaling approximately $106.9 million as of December 31, 2018. These liabilities, which are reflected on our balance sheet, are not reflected in the table above since it is unclear when these liabilities will be paid.
Primarily as a result of our various IBX data center expansion projects, as of December 31, 2018, we were contractually committed for $687.6 million of unaccrued capital expenditures, primarily for IBX equipment not yet delivered and labor not yet provided in connection with the work necessary to complete construction and open these IBX data centers prior to making them available to customers for installation. This amount, which is expected to be paid during 2019 and thereafter, is reflected in the table above as "other contractual commitments."
We had other non-capital purchase commitments in place as of December 31, 2018, such as commitments to purchase power in select locations and other open purchase orders, which contractually bind us for goods, services or arrangements that may contain

embedded leases to be delivered or provided during 2019 and beyond. Such other purchase commitments as of December 31, 2018, which total $837.5 million, are also reflected in the table above as "other contractual commitments."
Additionally, we entered into lease agreements in various locations for a total lease commitment of approximately $262.2 million, excluding potential lease renewals. These lease agreements will commence between February 2019 and May 2020 with lease terms of 5 to 30 years, which are not reflected in the table above.
Recent Accounting Pronouncements
In 2018, as more fully described in Note 12 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we sold 930,934 shares of our common stock for approximately $388.2 million, net of payment of commissions to the sales agents and estimated equity offering costs under our ATM program launched in 2017 (the "2017 ATM Program"). As of December 31, 2018, no shares remained available for sale under the 2017 ATM Program. In December 2018, we launched another ATM program, under which we may offer and sell from time to time up to an aggregate of $750.0 million of our common stock in "at the market" transactions (the "2018 ATM Program"). As of December 31, 2018, no sales have been made under the 2018 ATM Program.
In July 2018, as more fully described in Note 11 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we entered into an amendment to our existing credit agreement to add a senior unsecured term loan in an aggregate principal amount of ¥47.5 billion (the "JPY Term Loan"). Concurrent with the closing of our JPY Term Loan, we drew down the full ¥47.5 billion of the JPY Term Loan, or approximately $424.7 million, and prepaid the remaining principal of our existing Japanese Yen Term Loan of ¥43.8 billion, or approximately $391.3 million. We recognized a loss on debt extinguishment of $2.2 million during the third quarter of 2018 in connection therewith.
In April 2018, as more fully described in Note 3 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we completed the acquisition of Metronode for a cash purchase price of A$1.034 billion or approximately $804.6 million at the exchange rate in effect on April 18, 2018 (the "Metronode Acquisition"). We accounted for this transaction as a business combination using the acquisition method of accounting. The valuation and purchase accounting of this acquisition have not yet been finalized as of December 31, 2018.
In April 2018, as more fully described in Note 3 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we completed the acquisition of Infomart Dallas for total consideration of approximately $804.0 million (the "Infomart Dallas Acquisition"), consisting of approximately $45.8 million in cash, subject to customary adjustments, and $758.2 million aggregate fair value of 5.000% senior unsecured notes. We accounted for this transaction as a business combination using the acquisition method of accounting. The valuation and purchase accounting of this acquisition have not yet been finalized as of December 31, 2018.
In March 2018, as more fully described in Note 11 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we issued €750.0 million, or approximately $929.9 million in U.S. dollars, at the exchange rate in effect on March 14, 2018, aggregate principal amount of 2.875% senior notes due March 15, 2024. We incurred debt issuance costs of $11.6 million related to the 2.875% Euro Senior Notes due 2024.


Overview
Equinix provides global data center offerings that protect and connect the world's most valued information assets. Global enterprises, financial services companies and content and network service providers rely upon Equinix's leading insight and data centers around the world for the safehousing of their critical IT equipment and the ability to directly connect to the networks that enable today's information-driven economy. The acquisitions of Infomart Dallas and Metronode expanded our total global footprint to 200 IBX data centers across 52 markets around the world. Equinix offers the following solutions: (i) premium data center colocation, (ii) interconnection and exchange and (iii) outsourced IT infrastructure solutions. As of December 31, 2018, we operated or had partner IBX data centers in Brazil, Canada, Colombia and throughout the U.S. in the Americas region; Bulgaria, Finland, France, Germany, Ireland, Italy, the Netherlands, Poland, Portugal, Spain, Sweden, Switzerland, Turkey, the United Arab Emirates and the United Kingdom in the EMEA region; and Australia, China, Hong Kong, Indonesia, Japan and Singapore in the Asia-Pacific region.

 Our data centers in 52 markets around the world are a global platform, which allows our customers to increase information and application delivery performance while significantly reducing costs. This global platform and the quality of our IBX data centers have enabled us to establish a critical mass of customers. As more customers choose our IBX data centers, it benefits their suppliers and business partners to colocate with us as well, in order to gain the full economic and performance benefits of our offerings. These partners, in turn, pull in their business partners, creating a "marketplace" for their services. Our global platform enables scalable, reliable and cost-effective colocation, interconnection and traffic exchange that lowers overall cost and increases flexibility. Our focused business model is built on our critical mass of customers and the resulting "marketplace" effect. This global platform, combined with our strong financial position, continues to drive new customer growth and bookings.

Historically, our market has been served by large telecommunications carriers who have bundled telecommunications products and services with their colocation offerings. The data center market landscape has evolved to include cloud computing/utility providers, application hosting providers and systems integrators, managed infrastructure hosting providers and colocation providers. More than 350 companies provide data center solutions in the U.S. alone. Each of these data center solutions providers can bundle various colocation, interconnection and network offerings and outsourced IT infrastructure solutions. We are able to offer our customers a global platform that reaches 24 countries with proven operational reliability, improved application performance, network choice and a highly scalable set of offerings.
Our utilization rate represents the percentage of our cabinet space billing versus net sellable cabinet space available, taking into account power limitations. Our utilization rates were approximately 81%, as of December 31, 2018, and 80%, excluding the Verizon Data Center, Paris IBX Data Center, Itconic, Zenium data center and IO acquisitions, as of December 31, 2017. Excluding the impact of IBX data center expansion projects that have opened during the last 12 months, our utilization rate would have increased to approximately 83% as of December 31, 2018. Our cabinet utilization rate varies from market to market among our IBX data centers across the Americas, EMEA and Asia-Pacific regions. We continue to monitor the available capacity in each of our selected markets. To the extent we have limited capacity available in a given market, it may limit our ability for growth in that market. We perform demand studies on an ongoing basis to determine if future expansion is warranted in a market. In addition, power and cooling requirements for most customers are growing on a per unit basis. As a result, customers are consuming an increasing amount of power per cabinet. Although we generally do not control the amount of power our customers draw from installed circuits, we have negotiated power consumption limitations with certain high power-demand customers. This increased power consumption has driven us to build out our new IBX data centers to support power and cooling needs twice that of previous IBX data centers. We could face power limitations in our IBX data centers, even though we may have additional physical cabinet capacity available within a specific IBX data center. This could have a negative impact on the available utilization capacity of a given IBX data center, which could have a negative impact on our ability to grow revenues, affecting our financial performance, operating results and cash flows.
Strategically, we will continue to look at attractive opportunities to grow our market share and selectively improve our footprint and offerings. As was the case with our recent expansions and acquisitions, our expansion criteria will be dependent on a number of factors, including but not limited to demand from new and existing customers, quality of the design, power capacity, access to networks, capacity availability in the current market location, amount of incremental investment required by us in the targeted property, lead-time to break even on a free cash flow basis and in-place customers. Like our recent expansions and acquisitions, the right combination of these factors may be attractive to us. Depending on the circumstances, these transactions may require additional capital expenditures funded by upfront cash payments or through long-term financing arrangements in order to bring these properties up to Equinix standards. Property expansion may be in the form of purchases of real property, long-term leasing arrangements or acquisitions. Future purchases, construction or acquisitions may be completed by us or with partners or potential customers to minimize the outlay of cash, which can be significant.

Our business is based on a recurring revenue model comprised of colocation and related interconnection and managed infrastructure offerings. We consider these offerings recurring because our customers are generally billed on a fixed and recurring basis each month for the duration of their contract, which is generally one to three years in length. Our recurring revenues have comprised more than 90% of our total revenues during the past three years. In addition, during any given quarter of the past three years, more than half of our monthly recurring revenue bookings came from existing customers, contributing to our revenue growth. Our largest customer accounted for approximately 3% of our recurring revenues for the years ended December 31, 2018, 2017 and 2016. Our 50 largest customers accounted for approximately 38%, 37% and 36%, respectively, of our recurring revenues for the years ended December 31, 2018, 2017 and 2016.
Our non-recurring revenues are primarily comprised of installation services related to a customer's initial deployment and professional services we perform. These services are considered to be non-recurring because they are billed typically once, upon completion of the installation or the professional services work performed. The majority of these non-recurring revenues are typically billed on the first invoice distributed to the customer in connection with their initial installation. However, revenues from installation services are deferred and recognized ratably over the period of contract term. Additionally, revenue from contract settlements, when a customer wishes to terminate their contract early, is generally treated as a contract modification and recognized ratably over the remaining term of the contract, if any. As a percentage of total revenues, we expect non-recurring revenues to represent less than 10% of total revenues for the foreseeable future.
The largest components of our cost of revenues are depreciation, rental payments related to our leased IBX data centers, utility costs, including electricity, bandwidth access, IBX data center employees' salaries and benefits, including stock-based compensation, repairs and maintenance, supplies and equipment and security services. A majority of our cost of revenues is fixed in nature and should not vary significantly from period to period, unless we expand our existing IBX data centers or open or acquire new IBX data centers. However, there are certain costs that are considered more variable in nature, including utilities and supplies that are directly related to growth in our existing and new customer base. We expect the cost of our utilities, specifically electricity, will generally increase in the future on a per-unit or fixed basis, in addition to the variable increase related to the growth in consumption by our customers. In addition, the cost of electricity is generally higher in the summer months, as compared to other times of the year. To the extent we incur increased utility costs, such increased costs could materially impact our financial condition, results of operations and cash flows. Furthermore, to the extent we incur increased electricity costs as a result of either climate change policies or the physical effects of climate change, such increased costs could materially impact our financial condition, results of operations and cash flows. 
Sales and marketing expenses consist primarily of compensation and related costs for sales and marketing personnel, including stock-based compensation, amortization of contract costs, marketing programs, public relations, promotional materials and travel, as well as bad debt expense and amortization of customer relationship intangible assets.
General and administrative expenses consist primarily of salaries and related expenses, including stock-based compensation, accounting, legal and other professional service fees, and other general corporate expenses, such as our corporate regional headquarters office leases and some depreciation expense.
We expect our cost of revenues, sales and marketing expenses and general and administrative expenses to grow in absolute dollars in connection with our business growth. We may periodically see a higher cost of revenues as a percentage of revenue when a large expansion project opens or is acquired, before it starts generating any meaningful revenue. Furthermore, in relation to cost of revenues, the Americas region has a lower cost of revenues as a percentage of revenue than either EMEA or Asia-Pacific. This is due to both the increased scale and maturity of the Americas region, compared to either the EMEA or Asia-Pacific region, as well as a higher cost structure outside of the Americas, particularly in EMEA. We expect the trend that the Americas having the lowest cost of revenues as a percentage of revenues to continue. As a result, to the extent that revenue growth outside the Americas grows in greater proportion than revenue growth in the Americas, our overall cost of revenues as a percentage of revenues may increase in future periods. Sales and marketing expenses may periodically increase as a percentage of revenues as we continue to scale our operations by investing in sales and marketing initiatives to further increase our revenue, including the hiring of additional headcount and new product innovations. General and administrative expenses may also periodically increase as a percentage of revenues as we continue to grow our business.
Taxation as a REIT
We elected to be taxed as a REIT for federal income tax purposes beginning with our 2015 taxable year. As of December 31, 2018, our REIT structure included all of our data center operations in the U.S., Canada, Japan, and the data center operations in EMEA with the exception of Bulgaria, United Arab Emirates and a portion of Turkey. Our data center operations in other jurisdictions are operated as TRSs.

As a REIT, we generally are permitted to deduct from our federal taxable income the dividends we pay to our stockholders (including, for this purpose, the value of any deemed distributions attributable to anti-dilution adjustments made with respect to our 4.75% convertible subordinated notes prior to their maturity in 2016). The income represented by such dividends is not subject to federal income tax at the entity level but is taxed, if at all, at the stockholder level. Nevertheless, the income of our TRSs which hold our U.S. operations that may not be REIT compliant is subject, as applicable, to federal and state corporate income tax. Likewise, our foreign subsidiaries continue to be subject to foreign income taxes in jurisdictions in which they hold assets or conduct operations, regardless of whether held or conducted through TRSs or through QRSs. We are also subject to a separate corporate income tax on any gain recognized from a sale of a REIT asset where our basis in the asset is determined by reference to the basis of the asset in the hands of a C corporation (such as (i) an asset that we held as of the effective date of our REIT election, that is, January 1, 2015, or (ii) an asset held by us or a QRS following the liquidation or other conversion of a former TRS). This built-in-gains tax is generally applicable to any disposition of such an asset during the five-year period after the date we first owned the asset as a REIT asset (e.g., January 1, 2015 in the case of REIT assets we held at the time of our REIT conversion), to the extent of the built-in-gain based on the fair market value of such asset on the date we first held the asset as a REIT asset. If we fail to remain qualified for federal income tax as a REIT, we will be subject to federal income tax at regular corporate tax rates. Even if we remain qualified for federal income tax as a REIT, we may be subject to some federal, state, local and foreign taxes on our income and property in addition to taxes owed with respect to our TRSs' operations. In particular, while state income tax regimes often parallel the federal income tax regime for REITs, many states do not completely follow federal rules and some may not follow them at all.
On each of March 21, June 20, September 19, and December 12, 2018, we paid quarterly cash dividends of $2.28 per share. We expect these quarterly and other applicable distributions to equal or exceed the REIT taxable income that we recognized in 2018.
On December 22, 2017, the United States enacted legislation commonly referred to as the Tax Cuts and Jobs Act ("TCJA") which amended U.S. federal income tax laws. The TCJA retained the REIT regime but contained many significant changes that impact a REIT's taxable income subject to distribution, particularly a REIT with global operations. As of the end of 2018, we have finalized the analysis of the major tax impact to our business by the new tax legislation. Based on our current assessment, which is subject to further interpretation and guidance on the new tax legislation, we believe that we can continue to meet all the REIT compliance requirements in the foreseeable future and that the TCJA changes are not expected to meaningfully increase our tax liabilities in the U.S. because we expect to fully distribute our REIT taxable income.
We continue to monitor our REIT compliance in order to maintain our qualification for federal income tax as a REIT. For this and other reasons, as necessary, we may convert some of our data center operations in other countries into the REIT structure in future periods.
Results of Operations
Our results of operations for the year ended December 31, 2018 include the results of operations from the Metronode Acquisition from April 18, 2018 and the Infomart Dallas Acquisition from April 2, 2018. Our results of operations for the year ended December 31, 2017 include the results of operations of the IO Acquisition from February 3, 2017, the Verizon Data Center Acquisition from May 1, 2017, the Zenium data center acquisition from October 6, 2017 and the Itconic Acquisition from October 9, 2017. Our results of operations for the year ended December 31, 2016 include the results of operations of TelecityGroup from January 15, 2016 and the Paris IBX Data Center Acquisition from August 1, 2016.
In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers ("ASU 2014-09") and issued subsequent amendments to the initial guidance, collectively referred as "Topic 606." On January 1, 2018, as more fully described in Note 1 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K, we adopted Topic 606. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while the comparative information has not been restated and continues to be reported under accounting standards in effect for those periods. Under the new standard, we recognize installation revenue over the contract period rather than over the estimated installation life as under the prior revenue standard. We also capitalize and amortize certain costs to obtain contracts, rather than expense them immediately as under the previous standard.
Discontinued Operations
We present the results of operations associated with the TelecityGroup data centers that were divested in July 2016 as discontinued operations in our consolidated statement of operations for the year ended December 31, 2016. We did not have any discontinued operations activity during 2018 or 2017.

Years ended December 31, 2018 and 2017
Revenues.    Our revenues for the years ended December 31, 2018 and 2017 were generated from the following revenue classifications and geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas:           
Recurring revenues$2,357,326
 46% $2,062,352
 47% 14% 15%
Non-recurring revenues127,408
 3% 110,408
 3% 15% 16%
 2,484,734
 49% 2,172,760
 50% 14% 15%
EMEA:           
Recurring revenues1,467,492
 29% 1,266,971
 29% 16% 12%
Non-recurring revenues95,145
 2% 79,285
 2% 20% 16%
 1,562,637
 31% 1,346,256
 31% 16% 12%
Asia-Pacific:           
Recurring revenues951,684
 19% 790,797
 18% 20% 19%
Non-recurring revenues72,599
 1% 58,615
 1% 24% 23%
 1,024,283
 20% 849,412
 19% 21% 20%
Total:           
Recurring revenues4,776,502
 94% 4,120,120
 94% 16% 15%
Non-recurring revenues295,152
 6% 248,308
 6% 19% 18%
 $5,071,654
 100% $4,368,428
 100% 16% 15%
Americas Revenues. Revenues for our Americas region for the year ended December 31, 2018 included approximately $210.2 million of incremental revenues from the Verizon Data Center Acquisition, which closed in May 2017, and the Infomart Dallas Acquisition, which closed in April 2018. During both the years ended December 31, 2018 and 2017, our revenues from the United States, the largest revenue contributor in the Americas region for the periods, represented approximately 91% of the regional revenues. Excluding incremental revenues attributable to the Infomart Dallas and Verizon Data Center Acquisitions, growth in Americas revenues was primarily due to (i) $69.3 million of revenues generated from our recently-opened IBX data centers or IBX data center expansions in the Chicago, Culpeper, Denver, Houston, Miami, Rio de Janeiro, São Paulo, Seattle, Silicon Valley, and Washington, D.C. areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2018, the U.S. dollar was generally stronger relative to the Brazilian real than during the year ended December 31, 2017, resulting in approximately $23.6 million of unfavorable foreign currency impact on our Americas revenues during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
EMEA Revenues.  Revenues for our EMEA region for the year ended December 31, 2018 included approximately $52.6 million of incremental revenues from the IO Acquisition, which closed in February 2017, and the Itconic and Zenium data center acquisitions, which closed in October 2017. Our revenues from the U.K., our largest revenue contributor in the EMEA region, represented 30% of regional revenues for both the years ended December 31, 2018 and 2017. Excluding incremental revenues attributable to the IO, Itconic, and Zenium acquisitions, our EMEA revenue growth was primarily due to (i) approximately $73.2 million of revenues from our recently-opened IBX data centers or IBX data center expansions in the Amsterdam, Frankfurt, London and Paris metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $54.4 million of net favorable foreign currency impact to our EMEA revenues primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017.
Asia-Pacific Revenues.  Revenues for our Asia-Pacific region for the year ended December 31, 2018 included approximately $48.0 million of incremental revenues from the Metronode Acquisition, which closed in April 2018. Our revenues from Japan and Singapore, the largest revenue contributors in the Asia-Pacific region for the period, combined represented approximately 60% and 63% for the years ended December 31, 2018 and 2017, respectively. Excluding incremental revenues attributable to the Metronode Acquisition, our Asia-Pacific revenue growth was primarily due to (i) approximately $59.2 million of revenues generated from our recently-opened IBX data center expansions in the Hong Kong, Melbourne, Osaka, and Singapore metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31,

2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately $7.7 million of net favorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
Cost of Revenues.  Our cost of revenues for the years ended December 31, 2018 and 2017 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$1,113,854
 43% $958,845
 44% 16% 18%
EMEA916,751
 35% 749,933
 34% 22% 18%
Asia-Pacific574,870
 22% 484,371
 22% 19% 18%
Total$2,605,475
 100% $2,193,149
 100% 19% 18%
  Years Ended December 31,
  2018 2017
Cost of revenues as a percentage of revenues:    
Americas 45% 44%
EMEA 59% 56%
Asia-Pacific 56% 57%
Total 51% 50%
Americas Cost of Revenues. Cost of revenues for our Americas region for the year ended December 31, 2018 included approximately $115.4 million of incremental cost of revenues from the Verizon Data Center Acquisition and the Infomart Dallas Acquisition. Excluding the impact from these acquisitions, the increase in our Americas cost of revenues for the year ended December 31, 2018 compared to the year ended December 31, 2017 was primarily due to (i) $10.6 million higher depreciation expense primarily due to our IBX data center expansion activity; (ii) $7.6 million of higher taxes, licenses, insurance, and other cost of sales in support of our business growth; (iii) $5.8 million of higher rent and facility costs due to new fuel cell leases and IBX growth  and (iv) $15.5 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and higher headcount growth (1,399 Americas cost of revenues employees as of December 31, 2018 versus 1,339 as of December 31, 2017). During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $15.1 million of net favorable foreign currency impact to our Americas cost of revenues primarily due to a generally stronger U.S. dollar relative to the Brazilian real during the year ended December 31, 2018 compared to the year ended December 31, 2017. We expect our Americas cost of revenues to increase as we continue to grow our business, including results from recent acquisitions.
EMEA Cost of Revenues. Cost of revenues for our EMEA region for the year ended December 31, 2018 included $41.5 million of incremental cost of revenues from the IO, Itconic, and Zenium acquisitions. Excluding incremental cost of revenues attributable to these acquisitions, the increase in our EMEA cost of revenues was primarily due to (i) $47.3 million of higher utilities costs driven by IBX expansions, increased usage and price increases; (ii) $18.4 million of higher office expenses, rent and facility costs, and repair and maintenance primarily due to an increase in expansion activity and usage due to our business growth; (iii) $49.3 million of higher depreciation and accretion expenses, primarily driven by expansion activity in Amsterdam, Frankfurt, London, and Paris and (iv) $19.7 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and higher headcount growth (1,490 EMEA cost of revenues employees as of December 31, 2018 versus 1,375 as of December 31, 2017), partially offset by an $11.8 million reduction in other cost of sales, primarily due to realized cash flow hedge gains. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $30.0 million of net unfavorable foreign currency impact to our EMEA cost of revenues, primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017. We expect EMEA cost of revenues to increase as we continue to grow our business.
Asia-Pacific Cost of Revenues. Cost of revenues for our Asia-Pacific region for the year ended December 31, 2018 included approximately $33.2 million incremental cost of revenues from the Metronode Acquisition. Excluding the impact from the Metronode Acquisition, the increase in our Asia-Pacific cost of revenues for the year ended December 31, 2018 was primarily due to (i) $28.4 million of higher utilities costs, rent and facility costs and repairs and maintenance expense, primarily driven by higher usage in Australia, Hong Kong, Japan and Singapore; (ii) $16.1 million of higher depreciation and accretion expense, primarily from IBX expansions in Australia, Hong Kong, Japan and Singapore; (iii) $9.7 million of higher other cost of sales, primarily due

to custom service orders, and (iv) $3.9 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and headcount growth (884 Asia-Pacific cost of revenues employees as of December 31, 2018 versus 828 as of December 31, 2017). During the year ended December 31, 2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately $3.3 million of net unfavorable foreign currency impact to our Asia-Pacific cost of revenues in 2018. We expect Asia-Pacific cost of revenues to increase as we continue to grow our business, including the impact from the Metronode acquisition.
Sales and Marketing Expenses. Our sales and marketing expenses for the years ended December 31, 2018 and 2017 were split among the following geographic regions (dollars in thousands):
 Years ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$391,386
 62% $349,666
 60% 12% 13%
EMEA152,336
 24% 153,811
 26% (1)% (4)%
Asia-Pacific89,980
 14% 78,247
 14% 15% 14%
Total$633,702
 100% $581,724
 100% 9% 8%
 Years Ended December 31,
 2018 2017
Sales and marketing expenses as a percentage of revenues:   
Americas16% 16%
EMEA10% 11%
Asia-Pacific9% 9%
Total12% 13%
Americas Sales and Marketing Expenses. The increase in our Americas sales and marketing expenses was primarily due to (i) $38.1 million of amortization of the acquired intangible assets in connection with the Verizon Data Center Acquisition and (ii) $5.4 million of higher consulting expenses to support our growth. During the year ended December 31, 2018, the impact of foreign currency fluctuations to our Americas sales and marketing expenses was not significant when compared to average exchange rates during the year ended December 31, 2017. We anticipate that we will continue to invest in Americas sales and marketing initiatives and expect our Americas sales and marketing expenses to continue to increase as we continue to grow our business, including the impact from recent acquisitions.
EMEA Sales and Marketing Expenses. Our EMEA sales and marketing expense did not materially change during the year ended December 31, 2018 as compared to the year ended December 31, 2017. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $4.8 million of net unfavorable foreign currency impact to our EMEA sales and marketing expenses primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017. Over the past several years, we have been investing in our EMEA sales and marketing initiatives to further increase our revenues. We expect our EMEA sales and marketing expenses to continue to increase as we continue to grow our business.
Asia-Pacific Sales and Marketing Expenses. The increase in our Asia-Pacific sales and marketing expense is primarily due to (i) $4.1 million of amortization of the acquired intangible assets in connection with the Metronode Acquisition; (ii) $4.1 million of higher compensation costs, including sales compensation, general salaries, bonuses and stock-based compensation and headcount growth (306 Asia-Pacific sales and marketing employees as of December 31, 2018, versus 278 as of December 31, 2017) and (iii) $4.4 million of higher bad debt expense, primarily due to customer recovery in the prior year. For the year ended December 31, 2018, the impact of foreign currency fluctuations to our Asia-Pacific sales and marketing expenses was not significant when compared to average exchange rates for the year ended December 31, 2017. Over the past several years, we have been investing in our Asia-Pacific sales and marketing initiatives and expect our Asia-Pacific sales and marketing expenses to continue to increase as we continue to grow our business, including the impact from the Metronode acquisition.

General and Administrative Expenses. Our general and administrative expenses for the years ended December 31, 2018 and 2017 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$554,169
 67% $472,942
 63% 17% 18%
EMEA184,364
 22% 195,430
 26% (6)% (8)%
Asia-Pacific88,161
 11% 77,534
 11% 14% 12%
Total$826,694
 100% $745,906
 100% 11% 10%
 Years Ended December 31,
 2018 2017
General and Administrative expenses as a percentage of revenues:   
Americas22% 22%
EMEA12% 15%
Asia-Pacific9% 9%
Total16% 17%
Americas General and Administrative Expenses. The increase in our Americas general and administrative expenses was primarily due to (i) $25.8 million of higher compensation costs, including general salaries, bonuses, stock-based compensation, and headcount growth (1,389 Americas general and administrative employees as of December 31, 2018 versus 1,207 as of December 31, 2017); (ii) $18.1 million of higher office, rent and facilities costs and consulting expenses in support of our business growth; (iii) $3.8 million of higher recruiting, training, and travel expenses to support employee development and (iv) $30.2 million of higher depreciation expense associated with the implementation of certain systems, including revenue, data management and cloud exchange systems, to improve our quote to order and billing processes and to support the integration and growth of our business. During the year ended December 31, 2018, the impact of foreign currency fluctuations to our Americas general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2017. Over the course of the past year, we have been investing in our Americas general and administrative functions to scale our business effectively for growth, which has included additional investments in improving our back office systems. We expect our current efforts to improve our back office systems will continue over the next several years. Going forward, although we are carefully monitoring our spending, we expect Americas general and administrative expenses to increase as we continue to further scale our operations to support our growth, including these investments in our back office systems, investments to maintain our qualification for taxation as a REIT and recent acquisitions and to comply with new accounting standards.
EMEA General and Administrative Expenses. The decrease in our EMEA general and administrative expenses was primarily due to (i) $23.1 million of lower amortization expense as a result of fully amortizing the TelecityGroup trade names during the third quarter of 2017; (ii) $5.2 million decrease due to realized cash flow hedge gains and (iii) $5.1 million lower outside services consulting expense, partially offset by an increase of $19.6 million of compensation expenses, including general salaries, bonuses, and stock-based compensation and headcount growth (830 EMEA general and administrative employees as of December 31, 2018 versus 807 as of December 31, 2017). During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $5.2 million of net unfavorable foreign currency impact to our EMEA general and administrative expenses primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017. Over the course of the past year, we have been investing in our EMEA general and administrative functions as a result of our ongoing efforts to scale this region effectively for growth. Going forward, although we are carefully monitoring our spending, we expect our EMEA general and administrative expenses to increase in future periods as we continue to scale our operations to support our growth.
Asia-Pacific General and Administrative Expenses. The increase in our Asia-Pacific general and administrative expense was primarily due to $9.7 million of higher compensation costs, including general salaries, bonuses, stock-based compensation and headcount growth (482 Asia-Pacific general and administrative employees as of December 31, 2018 versus 453 as of December 31, 2017). For the year ended December 31, 2018, the impact of foreign currency fluctuations on our Asia-Pacific general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2017. Going forward, although we are carefully monitoring our spending, we expect Asia-Pacific general and administrative expenses to increase as we continue to support our growth, including the impact from the Metronode acquisition.

Acquisition Costs.  During the year ended December 31, 2018, we recorded acquisition costs totaling $34.4 million primarily in the Asia-Pacific and Americas regions, due to our acquisitions of Metronode and Infomart Dallas. During the year ended December 31, 2017, we recorded acquisition costs totaling $38.6 million, primarily in the Americas region, due to the Verizon Data Center Acquisition.
Impairment Charges. We did not have impairment charges during the years ended December 31, 2018 and 2017.
Gain on Asset Sales. During the year ended December 31, 2018, we recorded a gain on asset sales of $6.0 million primarily relating to the sale of a data center in Frankfurt. We did not have any gain on asset sales during the year ended December 31, 2017.
Income from Operations. Our income from operations for the years ended December 31, 2018 and 2017 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$412,610
 42% $363,220
 45% 14% 15%
EMEA312,163
 32% 237,854
 29% 31% 25%
Asia-Pacific252,610
 26% 207,940
 26% 21% 20%
Total$977,383
 100% $809,014
 100% 21% 19%
Americas Income from Continuing Operations. The increase in our Americas income from operations was primarily due to higher income generated from acquisitions, higher revenues as a result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2018, the U.S. dollar was generally stronger relative to the Brazilian real than during the year ended December 31, 2017, resulting in approximately $4.0 million of unfavorable foreign currency impact on our Americas income from continuing operations during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
EMEA Income from Continuing Operations. The increase in our EMEA income from operations was primarily due to higher revenues as a result of our IBX data center expansion activity and acquisitions, as described above, as well as lower sales and marketing and general and administrative expenses as a percentage of revenues, which was partially due to lower amortization costs as a result of fully amortizing the TelecityGroup trade names during the third quarter of 2017. During the year ended December 31, 2018, the impact of foreign currency fluctuations resulted in approximately $14.5 million of net favorable foreign currency impact to our EMEA income from continuing operations primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017.
Asia-Pacific Income from Continuing Operations. The increase in our Asia-Pacific income from operations was primarily due to higher income generated from the Metronode Acquisition, higher revenues as a result of our IBX data center expansion activity and organic growth as described above and lower cost of sales as a percentage of revenues. During the year ended December 31, 2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately $3.2 million of favorable foreign currency impact on our Asia-Pacific income from continuing operations during the year ended December 31, 2018 when compared to 2017 using average exchange rates.
Interest Income. Interest income was $14.5 million and $13.1 million for the years ended December 31, 2018 and 2017, respectively. The average yield for the year ended December 31, 2018 was 1.24% versus 0.64% for the year ended December 31, 2017.
Interest Expense.  Interest expense increased to $521.5 million for the year ended December 31, 2018 from $478.7 million for the year ended December 31, 2017. The increase in interest expense was primarily attributable to our issuance of the €750.0 million 2.875% Euro Senior Notes due 2024 in March 2018 and $750 million 5.000% Infomart Senior Notes in April 2018. The increase was partially offset by lower weighted average interest rates during the year ended December 31, 2018 as compared to the year ended December 31, 2017. During the years ended December 31, 2018 and 2017, we capitalized $19.9 million and $22.6 million, respectively, of interest expense to construction in progress. We expect to incur higher interest expense in future periods in connection with additional indebtedness that we incurred during 2018 and as a result of the increasing interest rates.
Other Income (Expense). We recorded net other income of $14.0 million and $9.2 million for the years ended December 31, 2018 and 2017, respectively, primarily due to foreign currency exchange gains and losses during the periods.
Loss on Debt Extinguishment. We recorded $51.4 million net loss on debt extinguishment during the year ended December 31, 2018, comprised of (i) $17.1 million of loss on debt extinguishment as a result of amendments to leases impacting the related

financing obligations; (ii) $19.5 million of loss on debt extinguishment from the settlement of financing obligations as a result of the Infomart Dallas Acquisition; (iii) $12.6 million of loss on debt extinguishment as a result of the settlement of financing obligations for properties purchased and (iv) $2.2 million of loss on debt extinguishment as a result of the redemption of the Japanese Yen Term Loan. During the year ended December 31, 2017, we recorded $65.8 million net loss on debt extinguishment comprised of (i) $14.6 million of loss on debt extinguishment from the early redemption of the senior notes; (ii) $22.5 million of loss on debt extinguishment from the redemption of term loans under the previously outstanding credit facility; (iii) $16.7 million of loss on debt extinguishment as a result of amendments to leases and financing obligations and (iv) $12.0 million of loss on debt extinguishment from the settlement of financing obligations as a result of properties purchased.
Income Taxes. We operate as a REIT for federal income tax purposes. As a REIT, we are generally not subject to federal income taxes on our taxable income distributed to stockholders. We intend to distribute or have distributed the entire taxable income generated by the operations of our QRSs for the years ended December 31, 2018 and December 31, 2017, respectively. As such, other than tax attributable to built-in-gains recognized and withholding taxes, no provision for U.S. income taxes for the QRSs has been included in the accompanying consolidated financial statements for the years ended December 31, 2018 and 2017.
We have made TRS elections for some of our subsidiaries in and outside the U.S. In general, a TRS may provide services that would otherwise be considered impermissible for REITs to provide and may hold assets that REITs cannot hold directly. U.S. income taxes for the TRS entities located in the U.S. and foreign income taxes for our foreign operations regardless of whether the foreign operations are operated as QRSs or TRSs have been accrued, as necessary, for the years ended December 31, 2018 and 2017.
For the years ended December 31, 2018 and 2017, we recorded $67.7 million and $53.9 million of income tax expenses, respectively. Our effective tax rates were 15.6% and 18.8%, respectively, for the years ended December 31, 2018 and 2017. The decrease in the effective tax rate in 2018 as compared to 2017 is primarily due to a release of valuation allowance in the current period as a result of a legal entity reorganization in our Americas region.
Adjusted EBITDA. Adjusted EBITDA is a key factor in how we assess the operating performance of our segments and develop regional growth strategies such as IBX data center expansion decisions. We define adjusted EBITDA as income or loss from operations plus depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs and gain on asset sales. See "Non-GAAP Financial Measures" below for more information about adjusted EBITDA and a reconciliation of adjusted EBITDA to income or loss from operations. Our adjusted EBITDA for the years ended December 31, 2018 and 2017 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2018 % 2017 % Actual Constant Currency
Americas$1,183,831
 49% $1,034,694
 51% 14% 15%
EMEA698,280
 29% 582,697
 28% 20% 15%
Asia-Pacific531,129
 22% 434,650
 21% 22% 21%
Total$2,413,240
 100% $2,052,041
 100% 18% 17%
Americas Adjusted EBITDA. The increase in our Americas adjusted EBITDA was primarily due to the Verizon Data Center Acquisition and the Infomart Dallas Acquisition, higher revenues as a result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2018, currency fluctuations resulted in approximately $9.6 million of net unfavorable foreign currency impact on our Americas adjusted EBITDA primarily due to the U.S. dollar being generally stronger relative to the Brazilian real during the year ended December 31, 2018 compared to the year ended December 31, 2017.
EMEA Adjusted EBITDA. The increase in our EMEA adjusted EBITDA was primarily due to higher revenues as a result of our IBX data center expansion activity and acquisitions, as described above, as well as lower sales and marketing and general and administrative expenses as a percentage of revenues. During the year ended December 31, 2018, currency fluctuations resulted in approximately $26.6 million of net favorable foreign currency impact to our EMEA adjusted EBITDA primarily due to a generally weaker U.S. dollar relative to the Euro and British pound during the year ended December 31, 2018 compared to the year ended December 31, 2017.
Asia-Pacific Adjusted EBITDA. The increase in our Asia-Pacific adjusted EBITDA was primarily due to the Metronode Acquisition, higher revenues as a result of our IBX data center expansion activity and organic growth as described above and lower cost of revenues as a percentage of revenues. During the year ended December 31, 2018, the U.S. dollar was generally weaker relative to the Singapore dollar and Japanese yen than during the year ended December 31, 2017, resulting in approximately

$4.4 million of net favorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2018 when compared to average exchange rates during the year ended December 31, 2017.
Years Ended December 31, 2017 and 2016
Revenues.    Our revenues for the years ended December 31, 2017 and 2016 were generated from the following revenue classifications and geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas:           
Recurring revenues$2,062,352
 47% $1,593,084
 44% 29% 29%
Non-recurring revenues110,408
 3% 86,465
 3% 28% 27%
 2,172,760
 50% 1,679,549
 47% 29% 29%
EMEA:           
Recurring revenues1,266,971
 29% 1,106,652
 31% 14% 15%
Non-recurring revenues79,285
 2% 64,687
 1% 23% 23%
 1,346,256
 31% 1,171,339
 32% 15% 15%
Asia-Pacific:           
Recurring revenues790,797
 18% 717,638
 20% 10% 11%
Non-recurring revenues58,615
 1% 43,463
 1% 35% 36%
 849,412
 19% 761,101
 21% 12% 12%
Total:           
Recurring revenues4,120,120
 94% 3,417,374
 95% 21% 21%
Non-recurring revenues248,308
 6% 194,615
 5% 28% 28%
 $4,368,428
 100% $3,611,989
 100% 21% 21%
Americas Revenues. Revenues for our Americas region for the year ended December 31, 2017 included approximately $359.1 million of revenues attributable to the Verizon Data Center Acquisition. During the years ended December 31, 2017 and 2016, our revenues from the United States, the largest revenue contributor in the Americas region for the periods, represented approximately 91% and 92%, respectively, of the regional revenues. Excluding revenues attributable to the Verizon Data Center Acquisition, growth in Americas revenues was primarily due to (i) $34.5 million of revenue generated from our recently-opened IBX data centers or IBX data center expansions in the Dallas, New York, São Paulo, Silicon Valley, Toronto and Washington, D.C. areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2017, the U.S. dollar was generally weaker relative to the Canadian dollar and Brazilian real than during the year ended December 31, 2016, resulting in approximately $11.4 million of favorable foreign currency impact on our Americas revenues during the year ended December 31, 2017 when compared to 2016 using average exchange rates.
EMEA Revenues.  As compared to 2016, revenues for our EMEA region for the year ended December 31, 2017 include $47.2 million of incremental revenues from acquisitions including the TelecityGroup Acquisition, which closed on January 15, 2016, the Paris IBX Data Center Acquisition, which closed in August 2016, the IO Acquisition, which closed in February 2017, and the Itconic and Zenium data center acquisitions, which closed in October 2017. Our revenues from the U.K., our largest revenue contributor in the EMEA region, represented 30% of regional revenues for the year ended December 31, 2017 compared to 32% of regional revenues for the year ended December 31, 2016. Excluding the acquisitions, our EMEA revenue growth was primarily due to (i) approximately $62.3 million of revenue from our IBX data centers or IBX data center expansions in the Amsterdam, Dubai, Dublin, Frankfurt, Helsinki, London, Paris and Zurich metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $4.9 million of net unfavorable foreign currency impact to our EMEA revenues primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Revenues.  Our revenues from Japan, the largest revenue contributor in the Asia-Pacific region, represented approximately 34% and 35%, respectively, for the year ended December 31, 2017 and 2016. Our Asia-Pacific revenue growth was primarily due to (i) approximately $42.6 million of revenue generated from our recently-opened IBX data center expansions in

the Hong Kong, Osaka and Sydney metro areas and (ii) an increase in orders from both our existing customers and new customers during the period. During the year ended December 31, 2017, the U.S. dollar was generally stronger relative to the Japanese Yen than during the year ended December 31, 2016, resulting in approximately $6.8 million of net unfavorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2017 when compared to 2016 using average exchange rates.
Cost of Revenues.  Our cost of revenues for the years ended December 31, 2017 and 2016 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$958,845
 44% $700,544
 38% 37% 36%
EMEA749,933
 34% 653,766
 36% 15% 15%
Asia-Pacific484,371
 22% 466,560
 26% 4% 5%
Total$2,193,149
 100% $1,820,870
 100% 20% 20%
 Years Ended December 31,
 2017 2016
Cost of revenues as a percentage of revenues:   
Americas44% 42%
EMEA56% 56%
Asia-Pacific57% 61%
Total50% 50%
Americas Cost of Revenues. Cost of revenues for our Americas region for the year ended December 31, 2017 included approximately $177.4 million of costs of revenues attributable to the Verizon Data Center Acquisition. Excluding the impact from the Verizon Data Center Acquisition, depreciation expense was $273.0 million and $241.6 million, respectively, for the years ended December 31, 2017 and 2016. The growth in depreciation expense was primarily due to our IBX expansion activity. In addition to the increase in depreciation expense, the increase in our Americas cost of revenues for the year ended December 31, 2017 compared to the year ended December 31, 2016 was primarily due to (i) $30.4 million of higher utilities, repairs and maintenance, property taxes, and other cost of sales in support of our business growth and (ii) $13.2 million of higher compensation costs, including general salaries, bonuses and stock-based compensation (1,114 Americas cost of revenues employees, excluding the Verizon Data Center Acquisition, as of December 31, 2017 versus 1,023 as of December 31, 2016). During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $7.7 million of net unfavorable foreign currency impact to our Americas cost of revenues primarily due to a generally weaker U.S. dollar relative to the Brazilian real and Canadian dollar during the year ended December 31, 2017 compared to the year ended December 31, 2016.
EMEA Cost of Revenues. As compared to 2016, cost of revenues for our EMEA region for the year ended December 31, 2017 included $36.7 million of incremental cost of revenues attributable to acquisitions, including the TelecityGroup Acquisition that closed on January 15, 2016, the Paris IBX Data Center Acquisition that closed in August 2016, the IO Acquisition, which closed in February 2017, and the Itconic and Zenium data center acquisitions, which closed in October 2017. Excluding cost of revenues attributable to these acquisitions, the increase in our EMEA cost of revenues was primarily due to (i) $25.5 million of higher utilities in support of our business growth; (ii) $16.4 million of higher other cost of sales, including third party and managed service expenses; (iii) $10.7 million of higher depreciation expense and (iv) $7.2 million of higher compensation costs, including general salaries, bonuses and stock-based compensation (743 EMEA cost of revenues employees, excluding TelecityGroup employees, as of December 31, 2017 versus 623 as of December 31, 2016). During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $2.7 million of net favorable foreign currency impact to our EMEA cost of revenues, primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Cost of Revenues. The increase in our Asia-Pacific cost of revenues was primarily due to (i) $16.7 million of higher utilities, rent, facility costs, consulting, bandwidth cost, custom service orders and repairs and maintenance costs in support of our business growth and (ii) $3.3 million of higher compensation costs, including general salaries, bonuses and stock-based compensation and headcount growth (828 Asia-Pacific cost of revenues employees as of December 31, 2017 versus 787 as of December 31, 2016), partially offset by a decrease of $3.2 million in depreciation and accretion expenses. During the year ended

December 31, 2017, the U.S. dollar was generally stronger relative to the Japanese Yen than during the year ended December 31, 2016, resulting in approximately $5.0 million of net favorable foreign currency impact to our Asia-Pacific cost of revenues in 2017.
Sales and Marketing Expenses. Our sales and marketing expenses for the years ended December 31, 2017 and 2016 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$349,666
 60% $230,900
 53% 51% 51%
EMEA153,811
 26% 137,887
 31% 12% 14%
Asia-Pacific78,247
 14% 69,955
 16% 12% 13%
Total$581,724
 100% $438,742
 100% 33% 33%
 Years Ended December 31,
 2017 2016
Sales and marketing expenses as a percentage of revenues:   
Americas16% 14%
EMEA11% 12%
Asia-Pacific9% 9%
Total13% 12%
Americas Sales and Marketing Expenses. The increase in our Americas sales and marketing expenses was primarily due to (i) $75.3 million of amortization of the acquired intangible assets in connection with the Verizon Data Center Acquisition; (ii) $33.1 million of higher compensation costs, including sales compensation, general salaries, bonuses and stock-based compensation and headcount growth (608 Americas sales and marketing employees, including those from the Verizon Data Center Acquisition, as December 31, 2017, versus 553 as of December 31, 2016) and (iii) $4.1 million of higher consulting expenses to support our growth. During the year ended December 31, 2017, the impact of foreign currency fluctuations to our Americas sales and marketing expenses was not significant when compared to average exchange rates during the year ended December 31, 2016.
EMEA Sales and Marketing Expenses. The increase in the EMEA sales and marketing expense was primarily due to (i) $12.3 million of higher compensation costs, including sales compensation, general salaries, bonuses, stock-based compensation and headcount growth (378 EMEA sales and marketing employees as of December 31, 2017 versus 349 as of December 31, 2016) and (ii) an increase of $1.8 million in depreciation and amortization expense, primarily due to acquisitions made during the current year. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $2.8 million of net favorable foreign currency impact to our EMEA sales and marketing expenses primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Sales and Marketing Expenses. The increase in the Asia-Pacific sales and marketing expense is primarily due to (i) $6.5 million of higher compensation costs, including sales compensation, general salaries, bonuses, stock-based compensation and a larger average headcount in 2017 as compared to 2016 and (ii) $3.2 million of higher rent expense in support of our growth. For the year ended December 31, 2017, the impact of foreign currency fluctuations to our Asia-Pacific sales and marketing expenses was not significant when compared to average exchange rates for the year ended December 31, 2016.
General and Administrative Expenses. Our general and administrative expenses for the years ended December 31, 2017 and 2016 were split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$472,942
 63% $391,637
 56% 21% 20%
EMEA195,430
 26% 228,310
 33% (14)% (12)%
Asia-Pacific77,534
 11% 74,614
 11% 4% 5%
Total$745,906
 100% $694,561
 100% 7% 8%

 Years Ended December 31,
 2017 2016
General and Administrative expenses as a percentage of revenues:   
Americas22% 23%
EMEA15% 19%
Asia-Pacific9% 10%
Total17% 19%
Americas General and Administrative Expenses. The increase in our Americas general and administrative expenses was primarily due to (i) $35.5 million of higher compensation costs, including general salaries, bonuses, stock-based compensation, and headcount growth (1,207 Americas general and administrative employees, including those from the Verizon Data Center Acquisition, as of December 31, 2017 versus 934 as of December 31, 2016); (ii) $22.9 million of higher depreciation expense associated with certain systems, including revenue, data management and cloud exchange systems, to improve our quote to order and billing processes and to support the integration and growth of our business and (iii) $16.6 million of higher office expense and consulting cost to support our growth. During the year ended December 31, 2017, the impact of foreign currency fluctuations to our Americas general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2016. Over the course of the past year, we have been investing in our Americas general and administrative functions to scale this region effectively for growth, which has included additional investments in improving our back office systems. We expect our current efforts to improve our back office systems will continue over the next several years. Going forward, although we are carefully monitoring our spending, we expect Americas general and administrative expenses to increase as we continue to further scale our operations to support our growth, including these investments in our back office systems and investments to maintain our qualification for taxation as a REIT.
EMEA General and Administrative Expenses. The decrease in our EMEA general and administrative expenses was primarily due to (i) $20.8 million of lower amortization expenses as a result of fully amortizing the TelecityGroup trade names during the current period and (ii) $8.4 million of lower consulting expenses which was largely due to the completion of TelecityGroup integration activities in the current period. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $5.7 million of net favorable foreign currency impact to our EMEA general and administrative expenses primarily due to a generally stronger U.S. dollar relative to the British pound during the year ended December 31, 2017 compared to the year ended December 31, 2016. Over the course of the past year, we have been investing in our EMEA general and administrative functions as a result of our ongoing efforts to scale this region effectively for growth.
Asia-Pacific General and Administrative Expenses. The increase in our Asia-Pacific general and administrative expense was primarily due to $5.0 million of higher compensation costs, including general salaries, bonuses, stock-based compensation and headcount growth (453 Asia-Pacific general and administrative employees as of December 31, 2017 versus 358 as of December 31, 2016), partially offset by a $1.3 million decrease in rent, repair and maintenance expense. For the year ended December 31, 2017, the impact of foreign currency fluctuations on our Asia-Pacific general and administrative expenses was not significant when compared to average exchange rates for the year ended December 31, 2016.
Acquisition Costs.  During the year ended December 31, 2017, we recorded acquisition costs totaling $38.6 million primarily in the Americas and EMEA regions, of which $28.5 million was related to the Verizon Data Center Acquisition during the year ended December 31, 2017 attributable to the Americas region. During the year ended December 31, 2016, we recorded acquisition costs totaling $64.2 million primarily in the EMEA region due to the acquisitions of Telecity and the Paris IBX Data Center, and to a lesser degree, to the Americas region.
Impairment Charges. During the year ended December 31, 2016, we recorded impairment charges totaling $7.7 million in the Asia-Pacific region relating to assets held for sale. We did not have impairment charges during the year ended December 31, 2017.
Gain on Asset Sales. During the year ended December 31, 2016, we recorded a gain on asset sales of $32.8 million primarily relating to the sale of the LD2 data center in the EMEA region and a parcel of land in San Jose in the Americas region. We did not have any gain on asset sales during the year ended December 31, 2017.

Income from Operations. Our income from operations for the years ended December 31, 2017 and 2016 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$363,220
 45% $352,180
 57% 3% 3%
EMEA237,854
 29% 124,853
 20% 91% 85%
Asia-Pacific207,940
 26% 141,706
 23% 47% 47%
Total$809,014
 100% $618,739
 100% 31% 30%
Americas Income from Continuing Operations. Our Americas income from continuing operations did not change significantly year over year. While revenues increased as described above, this was largely offset by (i) an increase of $18.6 million in acquisition costs, which was primarily related to the Verizon Data Center Acquisition; (ii) additional amortization of the acquired intangible assets resulted from the Verizon Data Center Acquisition and (iii) higher cost of revenues and sales and marketing expense as a percentage of revenues. The impact of foreign currency fluctuations on our Americas income from continuing operations for the year ended December 31, 2017 was not significant when compared to the year ended December 31, 2016.
EMEA Income from Continuing Operations. The increase in our EMEA income from continuing operations was primarily due to higher revenues as a result of our IBX data center expansion activity and acquisitions, as described above, as well as lower operating expenses as a percentage of revenues, lower amortization costs as a result of fully amortizing the TelecityGroup trade names during the current period and lower acquisition costs incurred for the year ended December 31, 2017. We incurred $9.2 million of acquisition costs during the year ended December 31, 2017, as compared to $54.5 million of acquisition costs during the year ended December 31, 2016, which was primarily related to our acquisition of TelecityGroup. During the year ended December 31, 2017, the impact of foreign currency fluctuations resulted in approximately $6.4 million of net favorable foreign currency impact to our EMEA income from continuing operations primarily due to a generally weaker U.S. dollar relative to the Euro during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Income from Continuing Operations. The increase in our Asia-Pacific income from continuing operations was primarily due to higher revenues as result of our IBX data center expansion activity and organic growth as described above and lower cost of revenues as a percentage of revenues. The impact of foreign currency fluctuations on our Asia-Pacific income from continuing operations for the year ended December 31, 2017 was not significant when compared to average exchange rates of the year ended December 31, 2016.
Interest Income. Interest income was $13.1 million and $3.5 million for the years ended December 31, 2017 and 2016, respectively. The increase in interest income was driven by higher cash balances and interest yield rates for the year ended December 31, 2017. The average yield for the year ended December 31, 2017 was 0.64% versus 0.37% for the year ended December 31, 2016.
Interest Expense.  Interest expense increased to $478.7 million for the year ended December 31, 2017 from $392.2 million for the year ended December 31, 2016. The increase in interest expense was primarily due to the Term B-2 Loan borrowings of €1.0 billion and the issuance of $1.25 billion of 2027 Senior Notes in March 2017, as well as additional financings such as various capital lease and other financing obligations to support our expansion projects. During the years ended December 31, 2017 and 2016, we capitalized $22.6 million and $13.3 million, respectively, of interest expense to construction in progress.
Other Income (Expense). We recorded net other income of $9.2 million and net expense of $57.9 million for the years ended December 31, 2017 and 2016, respectively, primarily due to foreign currency exchange gains and losses during the periods, including $63.5 million in foreign currency losses recognized in the first quarter of 2016 as a result of completing the acquisition of TelecityGroup.
Loss on Debt Extinguishment. We recorded $65.8 million net loss on debt extinguishment during the year ended December 31, 2017 comprised of (i) $14.6 million of loss on debt extinguishment from the early redemption of the senior notes; (ii) $22.5 million of loss on debt extinguishment from the redemption of term loans under the previously outstanding credit facility; (iii) $16.7 million of loss on debt extinguishment as a result of amendments to leases and financing obligations and (iv) $12.0 million of loss on debt extinguishment from the settlement of financing obligations of properties purchased. During the year ended December 31, 2016, we recorded a $12.3 million loss on debt extinguishment as a result of the settlement of the financing obligations for our Paris 3 IBX data center, a portion of the lender fees associated with the Japanese Yen Term Loan, and the prepayment and termination of our 2012 and 2013 Brazil financings.

Income Taxes. We operate as a REIT for federal income tax purposes. As a REIT, we are generally not subject to federal income taxes on our taxable income distributed to stockholders. We intend to distribute or have distributed the entire taxable income generated by the operations of our REIT and QRSs for the years ended December 31, 2017 and December 31, 2016, respectively. As such, other than built-in-gains recognized and withholding taxes, no provision for U.S. income taxes for the REIT and QRSs has been included in the accompanying consolidated financial statements for the years ended December 31, 2017 and 2016.
We have made TRS elections for some of our subsidiaries in and outside the U.S. In general, a TRS may provide services that would otherwise be considered impermissible for REITs to provide and may hold assets that REITs cannot hold directly. U.S. income taxes for the TRS entities located in the U.S. and foreign income taxes for our foreign operations regardless of whether the foreign operations are operated as QRSs or TRSs have been accrued, as necessary, for the years ended December 31, 2017 and 2016.
For the years ended December 31, 2017 and 2016, we recorded $53.9 million and $45.5 million of income tax expenses, respectively. Our effective tax rates were 18.8% and 28.4%, respectively, for the years ended December 31, 2017 and 2016. The decrease in the effective tax rate in 2017 as compared to 2016 is primarily due to recognition of unrecognized tax benefits related to our tax positions in the U.S. and Brazil as a result of a lapse in statutes of limitations and lower amount of non-deductible expenses within our EMEA operations. This is partially offset by net deferred tax asset remeasurement in the U.S. TRSs due to the corporate income tax rate reduction from 35% to 21% effective January 1, 2018 as a result of the TCJA.
Adjusted EBITDA. Adjusted EBITDA is a key factor in how we assess the operating performance of our segments and develop regional growth strategies such as IBX data center expansion decisions. We define adjusted EBITDA as income or loss from operations plus depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs and gain on asset sales. See "Non-GAAP Financial Measures" below for more information about adjusted EBITDA and a reconciliation of adjusted EBITDA to income or loss from operations. Our adjusted EBITDA for the years ended December 31, 2017 and 2016 was split among the following geographic regions (dollars in thousands):
 Years Ended December 31, % Change
 2017 % 2016 % Actual Constant Currency
Americas$1,034,694
 51% $787,311
 47% 31% 31%
EMEA582,697
 28% 494,263
 30% 18% 17%
Asia-Pacific434,650
 21% 375,900
 23% 16% 16%
Total$2,052,041
 100% $1,657,474
 100% 24% 24%
Americas Adjusted EBITDA. The increase in our Americas adjusted EBITDA was primarily due to the Verizon Data Center Acquisition, higher revenues as result of our IBX data center expansion activity and organic growth as described above. During the year ended December 31, 2017, currency fluctuations resulted in approximately $4.5 million of net favorable foreign currency impact on our Americas adjusted EBITDA primarily due to the U.S. dollar being generally weaker relative to the Canadian dollar and Brazilian real during the year ended December 31, 2017 compared to the year ended December 31, 2016.
EMEA Adjusted EBITDA. The increase in our EMEA adjusted EBITDA was primarily due to higher revenues as a result of our IBX data center expansion activity and organic growth as described above and lower operating expenses as a percentage of revenues. During the year ended December 31, 2017, currency fluctuations resulted in approximately $2.1 million of net favorable foreign currency impact to our EMEA adjusted EBITDA primarily due to a generally weaker U.S. dollar relative to the Euro during the year ended December 31, 2017 compared to the year ended December 31, 2016.
Asia-Pacific Adjusted EBITDA. The increase in our Asia-Pacific adjusted EBITDA was primarily due to higher revenues as a result of our IBX data center expansion activity and organic growth, as described above, and lower cost of revenues as a percentage of revenues. During the year ended December 31, 2017, the U.S. dollar was generally stronger relative to the Japanese Yen than during the year ended December 31, 2016, resulting in approximately $2.7 million of net unfavorable foreign currency impact to our Asia-Pacific revenues during the year ended December 31, 2017 when compared to average exchange rates during the year ended December 31, 2016.
Non-GAAP Financial Measures
We provide all information required in accordance with GAAP, but we believe that evaluating our ongoing operating results may be difficult if limited to reviewing only GAAP financial measures. Accordingly, we use non-GAAP financial measures to evaluate our operations.

Non-GAAP financial measures are not a substitute for financial information prepared in accordance with GAAP. Non-GAAP financial measures should not be considered in isolation, but should be considered together with the most directly comparable GAAP financial measures and the reconciliation of the non-GAAP financial measures to the most directly comparable GAAP financial measures. We have presented such non-GAAP financial measures to provide investors with an additional tool to evaluate our operating results in a manner that focuses on what management believes to be our core, ongoing business operations. We believe that the inclusion of these non-GAAP financial measures provides consistency and comparability with past reports and provides a better understanding of the overall performance of the business and ability to perform in subsequent periods. We believe that if we did not provide such non-GAAP financial information, investors would not have all the necessary data to analyze Equinix effectively.
Investors should note that the non-GAAP financial measures used by us may not be the same non-GAAP financial measures, and may not be calculated in the same manner, as those of other companies. Investors should therefore exercise caution when comparing non-GAAP financial measures used by us to similarly titled non-GAAP financial measures of other companies.
Our primary non-GAAP financial measures, adjusted EBITDA and adjusted funds from operations ("AFFO"), exclude depreciation expense as these charges primarily relate to the initial construction costs of our IBX data centers and do not reflect our current or future cash spending levels to support our business. Our IBX data centers are long-lived assets and have an economic life greater than 10 years. The construction costs of an IBX data center do not recur with respect to such data center, although we may incur initial construction costs in future periods with respect to additional IBX data centers, and future capital expenditures remain minor relative to our initial investment. This is a trend we expect to continue. In addition, depreciation is also based on the estimated useful lives of our IBX data centers. These estimates could vary from actual performance of the asset, are based on historical costs incurred to build out our IBX data centers and are not indicative of current or expected future capital expenditures. Therefore, we exclude depreciation from our operating results when evaluating our operations.
In addition, in presenting adjusted EBITDA and AFFO, we exclude amortization expense related to acquired intangible assets. Amortization expense is significantly affected by the timing and magnitude of our acquisitions and these charges may vary in amount from period to period. We exclude amortization expense to facilitate a more meaningful evaluation of our current operating performance and comparisons to our prior periods. We exclude accretion expense, both as it relates to asset retirement obligations as well as accrued restructuring charge liabilities, as these expenses represent costs which we believe are not meaningful in evaluating our current operations. We exclude stock-based compensation expense, as it can vary significantly from period to period based on share price, the timing, size and nature of equity awards. As such, we, and many investors and analysts, exclude stock-based compensation expense to compare our operating results with those of other companies. We also exclude restructuring charges. The restructuring charges relate to our decisions to exit leases for excess space adjacent to several of our IBX data centers, which we did not intend to build out, or our decision to reverse such restructuring charges. We also exclude impairment charges related to certain long-lived assets. The impairment charges are related to expense recognized whenever events or changes in circumstances indicate that the carrying amount of long-lived assets are not recoverable. We also exclude gain or loss on asset sales as it represents profit or loss that is not meaningful in evaluating the current or future operating performance. Finally, we exclude acquisition costs from AFFO and adjusted EBITDA to allow more comparable comparisons of our financial results to our historical operations. The acquisition costs relate to costs we incur in connection with business combinations. Such charges generally are not relevant to assessing the long-term performance of the company. In addition, the frequency and amount of such charges vary significantly based on the size and timing of the acquisitions. Management believes items such as restructuring charges, impairment charges, gain or loss on asset sales and acquisition costs are non-core transactions; however, these types of costs may occur in future periods.

Adjusted EBITDA
We define adjusted EBITDA as income from operations excluding depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs, and gain on asset sales as presented below (in thousands):
 Years Ended December 31,
 2018 2017 2016
Income from operations$977,383
 $809,014
 $618,739
Depreciation, amortization, and accretion expense1,226,741
 1,028,892
 843,510
Stock-based compensation expense180,716
 175,500
 156,148
Acquisition costs34,413
 38,635
 64,195
Impairment charges
 
 7,698
Gain on asset sales(6,013) 
 (32,816)
Adjusted EBITDA$2,413,240
 $2,052,041
 $1,657,474
Our adjusted EBITDA results have improved each year and in each region in total dollars due to the improved operating results discussed earlier in "Results of Operations", as well as the nature of our business model consisting of a recurring revenue stream and a cost structure which has a large base that is fixed in nature also discussed earlier in "Overview".
Funds from Operations ("FFO") and AFFO
We use FFO and AFFO, which are non-GAAP financial measures commonly used in the REIT industry. FFO is calculated in accordance with the standards established by the National Association of Real Estate Investment Trusts. FFO represents net income (loss), excluding gain (loss) from the disposition of real estate assets, depreciation and amortization on real estate assets and adjustments for unconsolidated joint ventures' and non-controlling interests' share of these items.
In presenting AFFO, we exclude certain items that we believe are not good indicators of our current or future operating performance. AFFO represents FFO excluding depreciation and amortization expense on non-real estate assets, accretion, stock-based compensation, restructuring charges, impairment charges, acquisition costs, an installation revenue adjustment, a straight-line rent expense adjustment, a contract cost adjustment, amortization of deferred financing costs and debt discounts and premiums, gain (loss) on debt extinguishment, an income tax expense adjustment, recurring capital expenditures and adjustments for unconsolidated joint ventures' and noncontrolling interests' share of these items and net income (loss) from discontinued operations, net of tax. The adjustments for installation revenue, straight-line rent expense and contract costs are intended to isolate the cash activity included within the straight-lined or amortized results in the consolidated statement of operations. We exclude the amortization of deferred financing costs and debt discounts and premiums as these expenses relate to the initial costs incurred in connection with debt financings that have no current or future cash obligations. We exclude gain (loss) on debt extinguishment since it generally represents the write-off of initial costs incurred in connection with debt financings or a cost that is incurred to reduce future interest costs and is not a good indicator of our current or future operating performance. We include an income tax expense adjustment, which represents the non-cash tax impact due to changes in valuation allowances, uncertain tax positions and deferred taxes that do not relate to current period's operations. We deduct recurring capital expenditures, which represent expenditures to extend the useful life of its IBX data centers or other assets that are required to support current revenues. We also exclude net income (loss) from discontinued operations, net of tax, which represents results that may not recur and are not a good indicator of our current future operating performance.

Our FFO and AFFO were as follows (in thousands):
 Years Ended December 31,
 2018 2017 2016
Net income$365,359
 $232,982
 $126,800
Adjustments:     
Real estate depreciation and amortization883,118
 754,351
 626,564
(Gain) loss on disposition of real estate property4,643
 4,945
 (28,388)
Adjustments for FFO from unconsolidated joint ventures
 85
 113
FFO$1,253,120
 $992,363
 $725,089
 Years Ended December 31,
 2018 2017 2016
FFO$1,253,120
 $992,363
 $725,089
Adjustments:     
Installation revenue adjustment10,858
 24,496
 20,161
Straight-line rent expense adjustment7,203
 8,925
 7,700
Contract cost adjustment(20,358) 
 
Amortization of deferred financing costs and debt discounts and premiums13,618
 24,449
 18,696
Stock-based compensation expense180,716
 175,500
 156,149
Non-real estate depreciation expense140,955
 111,121
 87,781
Amortization expense203,416
 177,008
 122,862
Accretion expense (adjustment)(748) (13,588) 6,303
Recurring capital expenditures(203,053) (167,995) (141,819)
Loss on debt extinguishment51,377
 65,772
 12,276
Acquisition costs34,413
 38,635
 64,195
Impairment charges
 
 7,698
Net income from discontinued operations, net of tax
 
 (12,392)
Income tax expense adjustment(12,420) 371
 3,680
Adjustments for AFFO from unconsolidated joint ventures
 (17) (40)
AFFO$1,659,097
 $1,437,040
 $1,078,339
Our AFFO results have improved due to the improved operating results discussed earlier in "Results of Operations," as well as due to the nature of our business model which consists of a recurring revenue stream and a cost structure which has a large base that is fixed in nature as discussed earlier in "Overview."
Constant Currency Presentation
Our revenues and certain operating expenses (cost of revenues, sales and marketing and general and administrative expenses) from our international operations have represented and will continue to represent a significant portion of our total revenues and certain operating expenses. As a result, our revenues and certain operating expenses have been and will continue to be affected by changes in the U.S. dollar against major international currencies such as the Euro, British pound, Japanese yen, Singapore dollar, Australian dollar and Brazilian real. In order to provide a framework for assessing how each of our business segments performed excluding the impact of foreign currency fluctuations, we present period-over-period percentage changes in our revenues and certain operating expenses on a constant currency basis in addition to the historical amounts as reported. Presenting constant currency results of operations is a non-GAAP financial measure and is not meant to be considered in isolation or as an alternative to GAAP results of operations. However, we have presented this non-GAAP financial measure to provide investors with an additional tool to evaluate our operating results. To present this information, our current and comparative prior period revenues and certain operating expenses from entities reporting in currencies other than the U.S. dollar are converted into U.S. dollars at constant exchange rates rather than the actual exchange rates in effect during the respective periods (i.e. average rates in effect for the year ended December 31, 2017 are used as exchange rates for the year ended December 31, 2018 when comparing the year

ended December 31, 2018 with the year ended December 31, 2017, and average rates in effect for the year ended December 31, 2016 are used as exchange rates for the year ended December 31, 2017 when comparing the year ended December 31, 2017 with the year ended December 31, 2016).
Liquidity and Capital Resources
As of December 31, 2018, our total indebtedness was comprised of debt and financing obligations totaling approximately $11.4 billion consisting of (a) approximately $8,500.1 million of principal from our senior notes, (b) approximately $1,518.9 million from our capital lease and other financing obligations and (c) $1,390.4 million of principal from our loans payable and mortgage (gross of debt issuance cost, debt discount, plus debt premium).
We believe we have sufficient cash, coupled with anticipated cash generated from operating activities, to meet our operating requirements, including repayment of the current portion of our debt as it becomes due, payment of regular dividend distributions and completion of our publicly-announced expansion projects.
On March 14, 2018, we issued €750.0 million 2.875% Euro Senior Notes due 2024. On April 2, 2018, we completed the Infomart Dallas Acquisition for a purchase price of approximately $804.0 million, which was funded with approximately $45.8 million in cash and $758.2 million aggregate fair value of 5.000% senior unsecured notes. On April 18, 2018, we completed the Metronode Acquisition for a cash purchase price of A$1.034 billion or approximately $804.6 million at the exchange rate in effect on April 18, 2018. In July, we drew down the full amount of the JPY Term Loan of ¥47.5 billion, or approximately $424.7 million at the exchange rate effective on July 31, 2018, and prepaid the remaining principal of our existing Japanese Yen Term Loan of ¥43.8 billion or approximately $391.3 million. As of December 31, 2018, we had $610.7 million of cash, cash equivalents and short-term investments, of which approximately $280.1 million was held in the U.S. We believe that our current expansion activities in the U.S. can be funded with our U.S.-based cash and cash equivalents and investments. In addition to our cash and investment portfolio, we have additional liquidity available to us from our $2.0 billion revolving facility and the 2018 ATM Program as described below. 
As of December 31, 2018, we had 42 irrevocable letters of credit totaling $68.5 million issued and outstanding under the revolving facility. We had a total of approximately $1.9 billion of additional liquidity available to us under the Revolving Facility.
For the year ended December 31, 2018, we sold 930,934 shares for approximately $388.2 million, net of payment of commissions to the sales agents and equity offering costs under our 2017 ATM Program. As of December 31, 2018, no shares remain available for sale under the 2017 ATM Program. In December 2018, we launched the 2018 ATM Program to sell up to $750.0 million of common stock in at the market offerings. As of December 31, 2018, no shares have been sold under the 2018 ATM Program.
Besides any further financing activity we may pursue, customer collections are our primary source of cash. While we believe we have a strong customer base, and have continued to experience relatively strong collections, if the current market conditions were to deteriorate, some of our customers may have difficulty paying us and we may experience increased churn in our customer base, including reductions in their commitments to us, all of which could have a material adverse effect on our liquidity. Additionally, we may pursue additional expansion opportunities, primarily the build out of new IBX data centers, in certain of our existing markets which are at or near capacity within the next year, as well as potential acquisitions and joint ventures. While we expect to fund these plans with our existing resources, additional financing, either debt or equity, may be required, and if current market conditions were to deteriorate, we may be unable to secure additional financing, or any such additional financing may only be available to us on unfavorable terms. An inability to pursue additional expansion opportunities will have a material adverse effect on our ability to maintain our desired level of revenue growth in future periods.
Sources and Uses of Cash
 Years Ended December 31,
 2018 2017 2016
 (in thousands)
Net cash provided by operating activities$1,815,426
 $1,439,233
 $1,019,353
Net cash used in investing activities(3,075,528) (5,400,826) (2,045,668)
Net cash provided by (used in) financing activities470,912
 4,607,860
 (897,065)

Operating Activities
Our cash provided by our operations is generated by colocation, interconnection, managed infrastructure and other revenues. Our primary use of cash from our operating activities include compensation and related costs, interest payments, other general corporate expenditures and taxes. The increase in net cash provided by operating activities during 2018 compared to 2017 was primarily due to improved operating results combined with incremental operating cash provided by the acquisitions of Infomart Dallas and Metronode in April 2018 and inclusion of full year operating results of the Verizon Data Center Acquisition, offset by increases in cash paid for cost of revenues, operating expenses, interest expense and income taxes. The increase in net cash provided by operating activities during 2017 compared to 2016 was primarily due to improved operating results combined with incremental operating cash provided by the Verizon Data Center Acquisition and other acquisitions in 2017, offset by timing of collections on our receivables and increases in cash paid for cost of revenues, operating expenses, interest expense and income taxes.
Investing Activities
The decrease in net cash used in investing activities during 2018 compared to 2017 was primarily due to the decrease in spending for business acquisitions of approximately of $3.1 billion, primarily due to the Verizon Data Center Acquisition in 2017, partially offset by $717.4 million of higher capital expenditures and $87.3 million of higher purchases of real estate, primarily as a result of expansion activity. The increase in net cash used in investing activities during 2017 compared to 2016 was primarily due to the increase in spending for business acquisitions of approximately of $2.2 billion, primarily related to the Verizon Data Center Acquisition, a decrease in proceeds from asset sales of $803.8 million, $265.4 million of higher capital expenditures and $67.0 million of higher purchases of real estate, primarily as a result of expansion activity.
During 2019, we anticipate our IBX expansion construction activity will increase from our 2018 levels. If the opportunity to expand is greater than planned and we have sufficient funding to pursue such expansion opportunities, we may further increase the level of capital expenditure to support this growth as well as pursue additional business and real estate acquisitions or joint ventures.
Financing Activities
Net cash provided by financing activities during 2018 was primarily due to (i) the issuance of €750.0 million 2.875% Euro Senior Notes due 2024, or approximately $929.9 million in U.S. dollars, at the exchange rate in effect on March 14, 2018; (ii) borrowing of the JPY Term Loan of ¥47.5 billion, or approximately $424.7 million at the exchange rate effective on July 31, 2018; (iii) sale of 930,934 shares under the 2017 ATM Program, for net proceeds of $388.2 million and (iv) proceeds from employee awards of $50.1 million. The proceeds were partially offset by (i) dividend distributions of $738.6 million; (ii) repayments of capital lease and other financing obligations of $103.8 million; (iii) repayments of mortgage and loans payable of $447.5 million, primarily related to the prepayment of the remaining principal of our existing Japanese Yen Term Loan; (iv) payments of debt extinguishment costs of $20.6 million and (v) payments of debt issuance costs of $12.2 million. 
Net cash provided by financing activities during 2017 was primarily due to (i) borrowings under our previously outstanding credit facility of €1,000.0 million, or approximately $1,059.8 million at the exchange rate in effect on January 6, 2017; (ii) the issuance of $1,250.0 million 2027 Senior Notes; (iii) the issuance of €1,000.0 million 2025 Euro Senior Notes, or approximately $1,199.7 million at the exchange rate on September 20, 2017; (iv) the issuance of €1,000.0 million 2026 Euro Senior Notes, approximately $1,179.0 million at the exchange rate on December 12, 2017; (v) borrowings under our Term Loan Facility of approximately $997.1 million on December 12, 2017, at the exchange rate in effect on that day; (vi) the sale of common stock for net proceeds of $2,481.4 million and (vii) proceeds from employee awards of $41.7 million, partially offset by (i) repayment of the entire $500.0 million principal amount of our 4.875% Senior Notes due 2020; (ii) repayment in full of our previously outstanding credit facility of approximately $2,207.7 million in total at the exchange rate on December 12, 2017; (iii) dividend distributions of $621.5 million; (iv) repayments of capital lease and other financing obligations of $93.5 million and (v) debt issuance costs of $81.0 million.
Net cash used in financing activities during 2016 was primarily due to (i) $1,462.9 million repayment of loans payable including repayment of loans assumed in the TelecityGroup acquisition, bridge term loan and revolving credit facility; (ii) $114.4 million repayment of capital lease and other financing obligations and (iii) $499.5 million payment of dividends, partially offset by $1,168.3 million of proceeds from loans payable including proceeds from our previously outstanding credit facility and Japanese Yen Term Loan.

Debt Obligations
Debt Facilities
We have various debt obligations with maturity dates ranging from 2019 to 2027 under which a total principal balance of $9.9 billion remained outstanding as of December 31, 2018. For further information on debt obligations, see "Debt Facilities" in Note 11 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.
Capital Lease and Other Financing Obligations
We have numerous capital lease and other financing obligations with maturity dates ranging from 2019 to 2053 under which a total principal balance of $1,518.9 million remained outstanding as of December 31, 2018 with a weighted average effective interest rate of 7.88%. For further information on our capital leases and other financing obligations, see "Capital Lease and Other Financing Obligations" in Note 10 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.
Contractual Obligations and Off-Balance-Sheet Arrangements
We lease a majority of our IBX data centers and certain equipment under non-cancelable lease agreements expiring through 2065. The following represents our debt maturities, financings, leases and other contractual commitments as of December 31, 2018 (in thousands):
 2019 2020 2021 2022 2023 Thereafter Total
Term loans and other loans payable (1)
$73,128
 $73,443
 $73,134
 $1,165,871
 $2,491
 $2,339
 $1,390,406
Senior notes (1)
300,000
 300,000
 150,000
 750,000
 1,000,000
 6,000,125
 8,500,125
Interest (2)
411,944
 395,556
 379,060
 352,907
 278,214
 600,648
 2,418,329
Capital lease and other financing obligations (3)
184,151
 170,592
 169,086
 168,810
 164,886
 1,601,251
 2,458,776
Operating leases (4)
187,280
 179,515
 166,159
 158,115
 147,677
 1,130,494
 1,969,240
Other contractual commitments (5)
1,129,604
 149,168
 36,839
 25,680
 19,789
 164,090
 1,525,170
Asset retirement obligations (6)
6,776
 3,801
 3,972
 11,633
 5,582
 64,899
 96,663
 $2,292,883
 $1,272,075
 $978,250
 $2,633,016
 $1,618,639
 $9,563,846
 $18,358,709
(1)
Represents principal of senior notes, term loans and other loans payable, as well as premium on mortgage payable.
(2)
Represents interest on mortgage payable, senior notes, term loan facilities and other loans payable based on their approximate interest rates as of December 31, 2018, as well as the credit facility fee for the revolving credit facility.
(3)
Represents principal and interest.
(4)
Represents minimum operating lease payments, excluding potential lease renewals.
(5)
Represents unaccrued contractual commitments. Other contractual commitments are described below.
(6)
Represents liability, net of future accretion expense.
In connection with certain of our leases and other contracts requiring deposits, we entered into 42 irrevocable letters of credit totaling $68.5 million under the revolving credit facility. These letters of credit were provided in lieu of cash deposits. If the landlords for these IBX leases decide to draw down on these letters of credit triggered by an event of default under the lease, we will be required to fund these letters of credit either through cash collateral or borrowing under the revolving credit facility. These contingent commitments are not reflected in the table above.
We had accrued liabilities related to uncertain tax positions totaling approximately $106.9 million as of December 31, 2018. These liabilities, which are reflected on our balance sheet, are not reflected in the table above since it is unclear when these liabilities will be paid.
Primarily as a result of our various IBX data center expansion projects, as of December 31, 2018, we were contractually committed for $687.6 million of unaccrued capital expenditures, primarily for IBX equipment not yet delivered and labor not yet provided in connection with the work necessary to complete construction and open these IBX data centers prior to making them available to customers for installation. This amount, which is expected to be paid during 2019 and thereafter, is reflected in the table above as "other contractual commitments."
We had other non-capital purchase commitments in place as of December 31, 2018, such as commitments to purchase power in select locations and other open purchase orders, which contractually bind us for goods, services or arrangements that may contain

embedded leases to be delivered or provided during 2019 and beyond. Such other purchase commitments as of December 31, 2018, which total $837.5 million, are also reflected in the table above as "other contractual commitments."
Additionally, we entered into lease agreements in various locations for a total lease commitment of approximately $262.2 million, excluding potential lease renewals. These lease agreements will commence between February 2019 and May 2020 with lease terms of 5 to 30 years, which are not reflected in the table above.
Other Off-Balance-Sheet Arrangements
We have various guarantor arrangements with both our directors and officers and third parties, including customers, vendors and business partners. As of December 31, 2018, there were no significant liabilities recorded for these arrangements. For additional information, see "Guarantor Arrangements" in Note 15 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.
Critical Accounting Policies and Estimates
Our consolidated financial statements are prepared in accordance with U.S. GAAP. The preparation of our financial statements requires management to make estimates and assumptions about future events that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, management evaluates the accounting policies, assumptions, estimates and judgments to ensure that our consolidated financial statements are presented fairly and in accordance with GAAP. Management bases its assumptions, estimates and judgments on historical experience, current trends and various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. However, because future events and their effects cannot be determined with certainty, actual results may differ from these assumptions and estimates, and such differences could be material.
Our significant accounting policies are discussed in Note 1 to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K. Management believes that the following critical accounting policies and estimates are the most critical to aid in fully understanding and evaluating our consolidated financial statements, and they require significant judgments, resulting from the need to make estimates about the effect of matters that are inherently uncertain:
Accounting for income taxes;
Accounting for business combinations;
Accounting for impairment of goodwill; and
Accounting for property, plant and equipment.


Description

Judgments and Uncertainties
Effect if Actual Results Differ from Assumptions
Accounting for Income Taxes.

Deferred tax assets and liabilities are recognized based on the future tax consequences attributable to temporary differences that exist between the financial statement carrying value of assets and liabilities and their respective tax bases, and operating loss and tax credit carryforwards on a taxing jurisdiction basis. We measure deferred tax assets and liabilities using enacted tax rates that will apply in the years in which we expect the temporary differences to be recovered or settled.
The accounting standard for income taxes requires a reduction of the carrying amounts of deferred tax assets by recording a valuation allowance if, based on the available evidence, it is more likely than not (defined by the accounting standard as a likelihood of more than 50%) that such assets will not be realized.

A tax benefit from an uncertain income tax position may be recognized in the financial statements only if it is more likely than not that the position is sustainable, based solely on its technical merits and consideration of the relevant taxing authority's widely understood administrative practices and precedents.

The TCJA included a Global Intangible Low-Taxed Income ("GILTI") provision that increases U.S. federal taxable income by certain foreign subsidiary income in the year it is earned. Our accounting policy is to treat any tax on GILTI inclusions as a current period cost included in the tax expense in the year incurred. The Company believes the GILTI inclusion provision will result in no financial statement impact provided the Company satisfies its REIT distribution requirement with respect to the GILTI inclusions.

Our qualification and taxation as a REIT depends on our satisfaction of certain asset, income, organizational, distribution, stockholder ownership and other requirements on a continuing basis. Our ability to satisfy quarterly asset tests depends upon our analysis and the fair market values of our REIT and non-REIT assets.




The valuation of deferred tax assets requires judgment in assessing the likely future tax consequences of events that have been recognized in our financial statements or tax returns. Our accounting for deferred tax consequences represents our best estimate of those future events.

In assessing the need for a valuation allowance, we consider both positive and negative evidence related to the likelihood of realization of the deferred tax assets. If, based on the weight of that available evidence, it is more likely than not the deferred tax assets will not be realized, we record a valuation allowance. The weight given to the positive and negative evidence is commensurate with the extent to which the evidence may be objectively verified.

This assessment, which is completed on a taxing jurisdiction basis, takes into account a number of types of evidence, including the following: 1) the nature, frequency and severity of current and cumulative financial reporting losses, 2) sources of future taxable income and 3) tax planning strategies.

In assessing the tax benefit from an uncertain income tax position, the tax position that meets the more-likely-than-not recognition threshold is initially and subsequently measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information.

For purposes of the quarterly REIT asset tests, we estimate the fair market value of assets within our QRSs and TRSs using a discounted cash flow approach, by calculating the present value of forecasted future cash flows. We apply discount rates based on industry benchmarks relative to the market and forecasting risks. Other key assumptions used to estimate the fair market value of assets in QRSs and TRSs include projected revenue growth, operating margins and forecasted capital expenditure. We revisit key assumptions periodically to reflect any changes due to business or economic environment.



As of December 31, 2018 and 2017, we had net total deferred tax liabilities of $189.6 million and $186.3 million, respectively. As of December 31, 2018 and 2017, we had a total valuation allowance of $57.0 million and $84.6 million, respectively. If and when we reduce our remaining valuation allowances, it may have a favorable impact to our financial position and results of operations in the periods when such determinations are made. We will continue to assess the need for our valuation allowances, by country or location, in the future

During the year ended December 31, 2018, we released the full valuation allowances against the deferred tax assets of one of our Brazilian legal entities, certain Japanese entities and partial valuation allowance against the Spanish deferred tax assets acquired from the Itconic acquisition as a result of legal entities reorganizations in the Americas, APAC and EMEA regions. As part of the purchase accounting determination for the Metronode Acquisition, we provided full valuation allowance against certain deferred tax assets in Australia that are not expected to be realizable in the foreseeable future. During the year ended December 31, 2017, we provided full and partial valuation allowances against the Spanish and Turkish deferred tax assets acquired from the Itconic and Zenium data center acquisitions, respectively. In addition, we set up a full valuation allowance against the deferred tax asset associated with excess tax goodwill established as a result of a reorganization in Brazil.

As of December 31, 2018 and 2017, we had unrecognized tax benefits of $150.9 million and $82.4 million, respectively, exclusive of interest and penalties. During the year ended December 31, 2018, the unrecognized tax benefits increased by $68.5 million primarily due to the Metronode Acquisition and the reorganization of the Spanish entities from the Itconic acquisition. During the year ended December 31, 2017, the unrecognized tax benefits increased by $10.2 million primarily due to the TelecityGroup integrations which was partially offset by the recognition of unrecognized tax benefits related to the Company's tax positions in the U.S. and Brazil as a result of a lapse in statutes of limitations. The unrecognized tax benefits of $114.9 million as of December 31, 2018, if subsequently recognized, will affect our effective tax rate favorably at the time when such benefits are recognized.


Description

Judgments and Uncertainties
Effect if Actual Results Differ from Assumptions
Accounting for Business Combinations

In accordance with the accounting standard for business combinations, we allocate the purchase price of an acquired business to its identifiable assets and liabilities based on estimated fair values. The excess of the purchase price over the fair value of the assets acquired and liabilities assumed, if any, is recorded as goodwill.

We use all available information to estimate fair values. We typically engage outside appraisal firms to assist in determining the fair value of identifiable intangible assets such as customer contracts, leases and any other significant assets or liabilities and contingent consideration, as well as the estimated useful life of intangible assets. We adjust the preliminary purchase price allocation, as necessary, up to one year after the acquisition closing date if we obtain more information regarding asset valuations and liabilities assumed.



Our purchase price allocation methodology contains uncertainties because it requires assumptions and management's judgment to estimate the fair value of assets acquired and liabilities assumed at the acquisition date. Key judgments used to estimate the fair value of intangible assets include projected revenue growth and operating margins, discount rates, customer attrition rates, as well as the estimated useful life of intangible assets. Management estimates the fair value of assets and liabilities based upon quoted market prices, the carrying value of the acquired assets and widely accepted valuation techniques, including discounted cash flows and market multiple analyses. Our estimates are inherently uncertain and subject to refinement. Unanticipated events or circumstances may occur which could affect the accuracy of our fair value estimates, including assumptions regarding industry economic factors and business strategies.



During the last three years, we have completed a number of business combinations, including the Metronode Acquisition and the Infomart Dallas Acquisition in April 2018, the Itconic Acquisition and the Zenium data center acquisition in October 2017, the Verizon Data Center Acquisition in May 2017, the IO Acquisition in February 2017, the Paris IBX Data Center Acquisition in August 2016 and the TelecityGroup acquisition in January 2016. In 2018, we have finalized the purchase price allocation for the Verizon Data Center, Itconic and Zenium data center acquisitions. The purchase price allocation for the IO, Paris IBX Data Center and TelecityGroup acquisitions were completed in prior years.

As of December 31, 2018, 2017 and 2016, we had net intangible assets of $2.3 billion, $2.4 billion and $719.2 million, respectively. We recorded amortization expense for intangible assets of $203.4 million, $177.0 million and $122.9 million for the years ended December 31, 2018, 2017 and 2016, respectively.

We do not believe there is a reasonable likelihood that there will be a material change in the estimates or assumptions we used to complete the purchase price allocations and the fair value of assets acquired and liabilities assumed. However, if actual results are not consistent with our estimates or assumptions, we may be exposed to losses or gains that could be material, which would be recorded in our consolidated statements of operations in 2019 or beyond.



Description

Judgments and Uncertainties
Effect if Actual Results Differ from Assumptions
Accounting for Impairment of Goodwill and Other Intangible Assets

In accordance with the accounting standard for goodwill and other intangible assets, we perform goodwill and other intangible assets impairment reviews annually, or whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable.
We complete the annual goodwill impairment assessment for the Americas, EMEA and Asia-Pacific reporting units to determine if the fair values of the reporting units exceeded their carrying values.
We perform a review of other intangible assets for impairment by assessing events or changes in circumstances that indicate the carrying amount of an asset may not be recoverable.



To perform annual goodwill impairment assessment, we elected to assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. This analysis requires assumptions and estimates before performing the quantitative goodwill impairment test, where the assessment requires assumptions and estimates derived from a review of our actual and forecasted operating results, approved business plans, future economic conditions and other market data. There were no specific factors present in 2018 or 2017 that indicated a potential goodwill impairment.

We performed our annual review of other intangible assets by assessing if there were events or changes in circumstances indicating that the carrying amount of an asset may not be recoverable, such as a significant decrease in market price of an asset, a significant adverse change in the extent or manner in which an asset is being used, a significant adverse change in legal factors or business climate that could affect the value of an asset or a continuous deterioration of our financial condition. This assessment requires assumptions and estimates derived from a review of our actual and forecasted operating results, approved business plans, future economic conditions and other market data. There were no specific events in 2018 or 2017 that indicated a potential impairment.



As of December 31, 2018, goodwill attributable to the Americas, the EMEA and the Asia-Pacific reporting units was $1.7 billion, $2.5 billion and $616.4 million, respectively.

Future events, changing market conditions and any changes in key assumptions may result in an impairment charge. While we have not recorded an impairment charge against our goodwill to date, the development of adverse business conditions in our Americas, EMEA or Asia-Pacific reporting units, such as higher than anticipated customer churn or significantly increased operating costs, or significant deterioration of our market comparables that we use in the market approach, could result in an impairment charge in future periods.

The balance of our other intangible assets, net, for the year ended December 31, 2018 was $2.3 billion. While we have not recorded an impairment charge against our other intangible assets to date, future events or changes in circumstances, such as a significant decrease in market price of an asset, a significant adverse change in the extent or manner in which an asset is being used, a significant adverse change in legal factors or business climate, may result in an impairment charge in future periods.

Any potential impairment charge against our goodwill and other intangible assets would not exceed the amounts recorded on our consolidated balance sheets.


Description

Judgments and Uncertainties
Effect if Actual Results Differ from Assumptions
Accounting for Property, Plant and Equipment

We have a substantial amount of property, plant and equipment recorded on our consolidated balance sheet. The vast majority of our property, plant and equipment represent the costs incurred to build out or acquire our IBX data centers. Our IBX data centers are long-lived assets. We depreciate our property, plant and equipment using the straight-line method over the estimated useful lives of the respective assets (subject to the term of the lease in the case of leased assets or leasehold improvements and integral equipment located in leased properties).

Accounting for property, plant and equipment includes determining the appropriate period in which to depreciate such assets, making assessments for leased properties to determine whether they are capital or operating leases, determining if construction projects performed at leased properties trigger build-to-suit lease accounting, assessing such assets for potential impairment, capitalizing interest during periods of construction and assessing the asset retirement obligations required for certain leased properties that require us to return the leased properties back to their original condition at the time we decide to exit a leased property.



Judgments are required in arriving at the estimated useful life of an asset and changes to these estimates would have significant impact on our financial position and results of operations. When we lease a property for our IBX data centers, we generally enter into long-term arrangements with initial lease terms of at least 8-10 years and with renewal options generally available to us. In the next several years, a number of leases for our IBX data centers will come up for renewal. As we start approaching the end of these initial lease terms, we will need to reassess the estimated useful lives of our property, plant and equipment. In addition, we may find that our estimates for the useful lives of non-leased assets may also need to be revised periodically. We periodically review the estimated useful lives of certain of our property, plant and equipment and changes in these estimates in the future are possible.

Another area of judgment for us in connection with our property, plant and equipment is related to lease accounting. Some of our IBX data centers are leased. Each time we enter into a new lease or lease amendment for one of our IBX data centers, we analyze each lease or lease amendment for the proper accounting. This requires certain judgments such as establishing the lease term to include in a lease test, establishing the remaining estimated useful life of the underlying property or equipment and estimating the fair value of the underlying property or equipment, establishing the incremental borrowing rate to calculate the present value of the minimum lease payment for the lease test. All of these judgments are inherently uncertain. Different assumptions or estimates could result in a different accounting treatment for a lease.

The assessment of long-lived assets for impairment requires assumptions and estimates of undiscounted and discounted future cash flows. These assumptions and estimates require significant judgment and are inherently uncertain.



As of December 31, 2018, 2017 and 2016, we had property, plant and equipment of $11.0 billion, $9.4 billion, and $7.2 billion, respectively. During the years ended December 31, 2018, 2017 and 2016, we recorded depreciation expense of $1.0 billion, $865.5 million, and $714.3 million, respectively. While we evaluated the appropriateness, we did not revise the estimated useful lives of our property, plant and equipment during the years ended December 31, 2018, 2017 and 2016. Further changes in our estimated useful lives of our property, plant and equipment could have a significant impact on our results of operations.
As of December 31, 2018, 2017 and 2016, we had property, plant and equipment under capital leases of $823.6 million, $760.4 million and $715.3 million, respectively. We recorded accumulated depreciation for assets under capital leases of $248.9 million, $199.2 million and $161.4 million as of December 31, 2018, 2017 and 2016, respectively.

Additionally, during the years ended December 31, 2018, 2017 and 2016, we recorded rent expense of approximately $185.4 million, $157.9 million and $140.6 million respectively.

Recent Accounting Pronouncements
See “Recent"Recent Accounting Pronouncements”Pronouncements" in Note 1 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.

ITEM 7A    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
ITEM 7A.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Market Risk
The following discussion about market risk involves forward-looking statements. Actual results could differ materially from those projected in the forward-looking statements. We may be exposed to market risks related to changes in interest rates and foreign currency exchange rates and fluctuations in the prices of certain commodities, primarily electricity.
We employ foreign currency forward exchange contracts for the purpose of hedging certain specifically-identified exposures. The use of these financial instruments is intended to mitigate some of the risks associated with fluctuations in currency exchange rates, but does not eliminate such risks. We do not use financial instruments for trading or speculative purposes.
Investment Portfolio Risk
We maintain an investment portfolio of various holdings, types, and maturities that is prioritized on meeting REIT asset requirements. All of our marketable securities are designated as available-for-sale and, therefore, are recorded on our consolidated balance sheets at fair value with unrealized gains or losses reported as a component of other comprehensive income,changes in fair values recognized in net of tax.income. We consider various factors in determining whether we should recognize an impairment charge for our securities, including the length of time and extent to which the fair value has been less than our cost basis and our intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery. We anticipate that we will recover the entire cost basis of these securities and have determined that no other-than-temporary impairments associated with credit losses were required to be recognized during the year ended December 31, 2016.2018.
As of December 31, 2016,2018, our investment portfolio of cash equivalents and marketable securities consisted of money market funds, certificates of deposits and publicly traded equity securities. The amount in our investment portfolio that could be susceptible to market risk totaled $413.8$124.1 million.
Interest Rate Risk 
Our primary objective for holding fixed income securities isWe are exposed to achieve an appropriate investment return consistent with preserving principal and managing risk which meets asset measurement requirements for REIT qualification. At any time, a sharp rise in interest rates or credit spreads could have a material adverse impact on the fair value of our fixed income investment portfolio. Securities with longer maturities are subject to a greater interest rate risk than those with shorter maturities. As of December 31, 2016, the average duration ofrelated to our portfolio was less than one year. An immediate hypothetical shift in the yield curves of plus or minus 50 basis points from their position as of December 31, 2016 would not have a material impact on the fair value of our investment portfolio. This sensitivity analysis assumes a parallel shift of all interest rates, however, interest rates do not always move in such a manner and actual results may differ materially. We monitor our interest rate and credit risk, including our credit exposures to specific rating categories and to individual issuers. There were no impairment charges on our cash equivalents and fixed income securities during the year ended December 31, 2016.
outstanding debt. An immediate 10% increase or decrease in current interest rates from their position as of December 31, 20162018 would not have a material impact on our debt obligationsinterest expense due to the fixed nature ofcoupon rate on the majority of our debt obligations. However, the interest expense associated with our senior credit facility and term loans, and Japanese Yen term loan, whichthat bear interest at variable rates, could be affected. Based on our debt that was outstanding as of December 31, 2016, forFor every 100 basis point increasechange in interest rates, our annual interest expense could increase by a total of approximately $13.9 million. Based on our debt that was outstanding as of December 31, 2016, for every 100 basis point decrease in interest rates, our annual interest expense could$12.7 million or decrease by a total of approximately $2.5$5.6 million based on the total balance of our primary borrowings under the term loan A and B facilities and Japanese Yen term loanTerm Loan Facility as of December 31, 2016.2018. As of December 31, 2016,2018, we had not employed any interest rate derivative products against our debt obligations. However, we may enter into interest rate hedging agreements in the future to mitigate our exposure to interest rate risk.
The fair value of our long-term fixed interest rate debt is subject to interest rate risk. Generally, the fair value of fixed interest rate debt will increase as interest rates fall and decrease as interest rates rise. These interest rate changes may affect the fair value of the fixed interest rate debt but do not impact our earnings or cash flows. The fair value of our convertible debt, which was traded in the market, was based on quoted market prices. The fair value of ourmortgage and loans payable and 5.000% Infomart Senior Notes, which are not traded in the market, is estimated by considering our credit rating, current rates available to us for debt of the same remaining maturities and the terms of the debt. The fair value of our other senior notes, which are traded in the market, was based on quoted market prices. The following table represents the carrying value and estimated fair value of our mortgage and loans payable and senior notes and convertible debt as of (in thousands):

 December 31, 2018 December 31, 2017
 
Carrying
Value (1)
 Fair Value 
Carrying
 Value (1)
 Fair Value
Mortgage and loans payable$1,388,524
 $1,389,632
 $1,468,275
 $1,464,877
Senior notes8,500,125
 8,422,211
 7,002,000
 7,288,673
 December 31, 2016 December 31, 2015
 
Carrying
Value (1)
 Fair Value 
Carrying
 Value (1)
 Fair Value
Mortgage and loans payable$1,459,826
 $1,461,954
 $920,064
 $916,602
Convertible debt
 
 150,082
 151,997
Senior notes3,850,000
 4,033,985
 3,850,000
 3,954,000
Revolving credit facility
 
 325,622
 325,617
___________________
(1)
The carrying value is gross of debt issuance cost, debt discount and discount.debt premium.

Foreign Currency Risk
A significant portion of our revenue is denominated in U.S. dollars, however, approximately 57.1%55.3% of our revenues and 59.7%53.5% of our operating costs are attributable to Brazil, Canada, Colombia and the EMEA and Asia-Pacific regions, and a large portion of those revenues and costs are denominated in a currency other than the U.S. dollar, primarily the Euro, British pound, Japanese yen, Singapore dollar, Hong Kong dollar, Australian dollar and Brazilian real. To help manage the exposure to foreign currency exchange rate fluctuations, we have implemented a number of hedging programs, in particular (i) a cash flow hedging program

to hedge the forecasted revenues and expenses in our EMEA region, (ii) a balance sheet hedging program to hedge the remeasurement of monetary assets and liabilities denominated in foreign currencies, and (iii) a net investment hedging program to hedge the long term investments in our foreign subsidiaries. Our hedging programs reduce, but do not entirely eliminate, the impact of currency exchange rate movements and its impact on theour consolidated balance sheets, statements of operations.operations and statements of cash flows. As of December 31, 2016,2018, the outstanding foreign currency forward contracts had maturities of up to two years.
We have entered into various foreign currency debt obligations. As of December 31, 2018, the total principal amount of foreign currency debt obligations was $4.5 billion, including $3.2 billion denominated in Euro, $612.7 million denominated in British Pound, $427.8 million denominated in Japanese Yen and $304.0 million denominated in Swedish Krona. As of December 31, 2018, we have designated $4.1 billion of the total principal amount of foreign currency debt obligations as net investment hedges against our net investments in foreign subsidiaries. For a net investment hedge, changes in the fair value of the hedging instrument designated as a net investment hedge, except the ineffective portion and forward points, are recorded as a component of other comprehensive income in the consolidated balance sheets. We did not record any ineffectiveness during the year ended December 31, 2018.
Fluctuations in the exchange rates between these foreign currencies (i.e. Euro, British Pound, Swedish Krona and Japanese Yen) and the U.S. Dollar will impact the amount of U.S. dollars that we will require to settle the foreign currency debt obligations at maturity. If the U.S. Dollar would have been weaker or stronger by 10% in comparison to these foreign currencies as of December 31, 2018, we estimate our obligation to cash settle the principal of these foreign currency debt obligations in U.S. dollars would have increased or decreased by approximately $449.5 million respectively.
For the foreseeable future, we anticipate that approximately 50% or less of our revenues and operating costs will continue to be generated and incurred outside of the U.S. in currencies other than the U.S. dollar. During fiscal 2016,2018, the U.S. dollar became generally stronger relative to certain of the currencies of the foreign countries in which we operate. This overall strengthstrengthening of the U.S. dollar had a negative impact on our consolidated results of operations because the foreign denominations translated into less U.S. dollars. In future periods, the volatility of the U.S. dollar as compared to the other currencies in which we do business could have a significant impact on our consolidated financial position and results of operations including the amount of revenue that we report in future periods.
With the existing cash flow hedges in place, a hypothetical additional 10% strengthening of the U.S. dollar during the year ended December 31, 20162018 would have resulted in a reduction of our revenues and operating expenses, including depreciation and amortization expenses, for the year by approximately $119.2$137.1 million and $138.5$145.1 million, respectively.
With the existing cash flow hedges in place, a hypothetical additional 10% weakening of the U.S. dollar during the year ended December 31, 2018 would have resulted in an increase of our revenues and operating expenses, including depreciation and amortization expenses, for the year by approximately $175.1 million and $179.4 million, respectively.
We may enter into additional hedging activities in the future to mitigate our exposure to foreign currency risk as our exposure to foreign currency risk continues to increase due to our growing foreign operations; however, we do not currently intend to eliminate all foreign currency transaction exposure.
Commodity Price Risk
Certain operating costs incurred by us are subject to price fluctuations caused by the volatility of underlying commodity prices. The commodities most likely to have an impact on our results of operations in the event of price changes are electricity, supplies and equipment used in our IBX data centers. We closely monitor the cost of electricity at all of our locations. We have entered into several power contracts to purchase power at fixed prices during 2014 and beyond in certain locations in the U.S., Australia, Brazil, France, Germany, Japan, the Netherlands, Singapore and the United Kingdom.
In addition, as we are building new, or expanding existing, IBX data centers, we are subject to commodity price risk for building materials related to the construction of these IBX data centers, such as steel and copper. In addition, the lead-time to procure certain pieces of equipment, such as generators, is substantial. Any delays in procuring the necessary pieces of equipment for the construction of our IBX data centers could delay the anticipated openings of these new IBX data centers and, as a result, increase the cost of these projects.
We do not currently employ forward contracts or other financial instruments to address commodity price risk other than the power contracts discussed above.
ITEM 8.    FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

ITEM 8.FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
The financial statements and supplementary data required by this Item 8 are listed in Item 15(a)(1) and begin at page F-1 of this Annual Report on Form 10-K.
ITEM 9.CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
There is no disclosure to report pursuant to Item 9.
ITEM 9A.    CONTROLS AND PROCEDURES
ITEM 9A.CONTROLS AND PROCEDURES
Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures
Under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, we conducted an evaluation of our disclosure controls and procedures, as such term is defined under Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act”"Exchange Act"). Based on this evaluation, our Chief Executive Officer and our Chief Financial Officer concluded that our disclosure controls and procedures were effective at the reasonable assurance level as of December 31, 2016.2018.
Management’sManagement's Report on Internal Control Over Financial Reporting
Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rule 13a-15(f). Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
Under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the framework in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.
Based on our evaluation under the framework in Internal Control – Integrated Framework (2013), our management concluded that our internal control over financial reporting was effective as of December 31, 2016.2018.
The evaluation of the effectiveness of our internal control over financial reporting as of December 31, 2016 did not include the internal controls of Telecity Group plc. We excluded Telecity Group plc. from our assessment of internal control over financial reporting as of December 31, 2016 as it was acquired in January 15, 2016. TelecityGroup is our wholly-owned subsidiary whose total assets represented 9%, and total revenues represented 11%, of the related consolidated financial statements amounts as of and for the year ended December 31, 2016.
The effectiveness of our internal control over financial reporting as of December 31, 20162018 has been audited by PricewaterhouseCoopers LLP, an independent registered public accounting firm, as stated in their report which is included herein on page F-1 of this Annual Report on Form 10-K.
Limitations on the Effectiveness of Controls
Our management, including our Chief Executive Officer and Chief Financial Officer, believes that our disclosure controls and procedures and internal control over financial reporting are designed and operated to be effective at the reasonable assurance level. However, our management does not expect that our disclosure controls and procedures or our internal control over financial reporting will prevent all errors and all fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, have been detected. These inherent limitations include the realities that judgments in decision making can be faulty, and that breakdowns can occur because of a simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people or by management override of the controls. The design of any system of controls is also based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over time, controls may become inadequate because of changes in conditions, or the degree of compliance with policies or procedures may deteriorate.

Because of the inherent limitations in a cost effective control system, misstatements due to error or fraud may occur and not be detected.

Changes in Internal Control Over Financial Reporting
There was no change in our internal controls over financial reporting during the fourth quarter of fiscal 20162018 that has materially affected, or is reasonable likely to affect, our internal controls over financial reporting. We implemented certain internal controls related to the adoption of ASC 606, Revenue from Contracts with Customers, to ensure we adequately evaluated our contracts and properly assessed the impact of the new revenue recognition standard on our financial statements to facilitate its adoption effective January 1, 2018.
ITEM 9B. OTHER INFORMATION
ITEM 9B.OTHER INFORMATION
There is no disclosure to report pursuant to Item 9B.
PART III
ITEM 10.
ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE 
Information required by this item is incorporated by reference to the Equinix proxy statement for the 20172019 Annual Meeting of Stockholders.
We have adopted a Code of Ethics applicable for the Chief Executive Officer and Senior Financial Officers and a Code of Business Conduct. This information is incorporated by reference to the Equinix proxy statement for the 20172019 Annual Meeting of Stockholders and is also available on our website, www.equinix.com.
ITEM 11. EXECUTIVE COMPENSATION
ITEM 11.EXECUTIVE COMPENSATION
Information required by this item is incorporated by reference to the Equinix proxy statement for the 20172019 Annual Meeting of Stockholders.
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
ITEM 12.SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
Information required by this item is incorporated by reference to the Equinix proxy statement for the 20172019 Annual Meeting of Stockholders.
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE
ITEM 13.CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE
Information required by this item is incorporated by reference to the Equinix proxy statement for the 20172019 Annual Meeting of Stockholders.
ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES
ITEM 14.PRINCIPAL ACCOUNTANT FEES AND SERVICES
Information required by this item is incorporated by reference to the Equinix proxy statement for the 20172019 Annual Meeting of Stockholders.

PART IV
ITEM 15.    EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
ITEM 15.EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
(a)(1) Financial Statements:
(a)(2) Financial statements and schedules:
(a)(2) All schedules have been omitted because they are not applicable or the required information is shown in the financial statements or notes thereto.
(a)(3) Exhibits:
    Incorporated by Reference  
Exhibit Number Exhibit Description Form 
Filing Date/
Period End Date
 Exhibit 
Filed
Herewith
2.1 Rule 2.7 Announcement, dated as May 29, 2015. Recommended Cash and Share Offer for Telecity Group plc by Equinix, Inc. 8-K 5/29/15 2.1  
2.2 Cooperation Agreement, dated as of May 29, 2015, by and between Equinix, Inc. and Telecity Group plc. 8-K 5/29/15 2.2  
2.3 Amendment to Cooperation Agreement, dated as of November 24, 2015, by and between Equinix, Inc. and Telecity Group plc. 10-K 12/31/15 2.3  
2.4 Transaction Agreement, dated as of December 6, 2016, by and between Verizon Communications Inc. and Equinix, Inc. 8-K 12/06/16 2.1  
2.5 Amendment No. 1 to the Transaction Agreement, dated February 23, 2017, by and between Verizon Communications Inc. and Equinix, Inc.       X
3.1 Amended and Restated Certificate of Incorporation of the Registrant, as amended to date. 10-K/A 12/31/02 3.1  
3.2 Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Registrant 8-K 6/14/11 3.1  
3.3 Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Registrant 8-K 6/11/13 3.1  
3.4 Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Registrant 10-Q 6/30/2014 3.4  
3.5 Certificate of Designation of Series A and Series A-1 Convertible Preferred Stock. 10-K/A 12/31/02 3.3  
3.6 Amended and Restated Bylaws of the Registrant. 8-K 03/29/16 3.1  
4.1 Reference is made to Exhibits 3.1, 3.2, 3.3, 3.4, 3.5 and 3.6.        
    Incorporated by Reference  
Exhibit Number Exhibit Description Form 
Filing Date/
Period End Date
 Exhibit 
Filed
Herewith
           
  8-K 5/29/15 2.1  
           
  8-K 5/29/15 2.2  
           
  10-K 12/31/15 2.3  
           
  8-K 12/6/16 2.1  
           
  10-K 12/31/16 2.5  
           
  8-K 5/1/17 2.1  
           
  10-Q 8/8/18 2.7  
           
  10-K/A 12/31/02 3.1  
           
  8-K 6/14/11 3.1  
           

    Incorporated by Reference  
Exhibit Number Exhibit Description Form 
Filing Date/
Period End Date
 Exhibit 
Filed
Herewith
4.2 Indenture for the 2020 Notes dated March 5, 2013 by and between Equinix, Inc. and U.S. Bank National Association as trustee 8-K 3/5/13 4.1  
4.3 Form of 4.875% Senior Note due 2020 (see Exhibit 4.2). 8-K 3/5/2013 4.2  
4.4 Indenture for the 2023 Notes dated March 5, 2013 by and between Equinix, Inc. and U.S. Bank National Association as trustee 8-K 3/5/13 4.3  
4.5 Form of 5.375% Senior Note due 2023 (see Exhibit 4.4)        
4.6 Indenture, dated as of November 20, 2014, between Equinix, Inc. and U.S. Bank National Association, as trustee 8-K 11/20/14 4.1  
4.7 First Supplemental Indenture, dated as of November 20, 2014, between Equinix, Inc. and U.S. Bank National Association, as trustee 8-K 11/20/14 4.2  
4.8 Form of 5.375% Senior Note due 2022 (see Exhibit 4.7)        
4.9 Second Supplemental Indenture, dated as of November 20, 2014, between Equinix, Inc. and U.S. Bank National Association, as trustee 8-K 11/20/14 4.4  
4.10 Form of 5.750% Senior Note due 2025 (see Exhibit 4.9)        
4.11 Third Supplemental Indenture, dated as of December 4, 2015, between Equinix, Inc. and U.S. Bank National Association, as trustee 8-K 12/04/15 4.2  
4.12 Form of 5.875% Senior Note due 2026 (see Exhibit 4.11)        
4.13 Form of Registrant’s Common Stock Certificate 10-K 12/31/14 4.13  
10.1** Form of Indemnification Agreement between the Registrant and each of its officers and directors. S-4 (File No. 333-93749) 12/29/1999 10.5  
10.2** 2000 Equity Incentive Plan, as amended.       X
10.3** 2000 Director Option Plan, as amended.       X
10.4** 2001 Supplemental Stock Plan, as amended.       X
10.5** Equinix, Inc. 2004 Employee Stock Purchase Plan, as amended. 10-Q 6/30/14 10.5  
10.6** Severance Agreement by and between Stephen Smith and Equinix, Inc. dated December 18, 2008. 10-K 12/31/08 10.31  
10.7** Severance Agreement by and between Peter Van Camp and Equinix, Inc. dated December 10, 2008. 10-K 12/31/08 10.32  
10.8** Severance Agreement by and between Keith Taylor and Equinix, Inc. dated December 19, 2008. 10-K 12/31/08 10.33  
10.9** Change in Control Severance Agreement by and between Eric Schwartz and Equinix, Inc. dated December 19, 2008. 10-K 12/31/08 10.35  
10.10** Switch & Data 2007 Stock Incentive Plan. S-1/A (File No. 333-137607) filed by Switch & Data Facilities Company 2/5/07 10.9  
    Incorporated by Reference  
Exhibit Number Exhibit Description Form 
Filing Date/
Period End Date
 Exhibit 
Filed
Herewith
  8-K 6/11/13 3.1  
           
  10-Q 6/30/2014 3.4  
           
  10-K/A 12/31/02 3.3  
           
  8-K 3/29/16 3.1  
           
4.1 Reference is made to Exhibits 3.1, 3.2, 3.3, 3.4, 3.5 and 3.6.        
           
  8-K 3/5/13 4.3  
           
4.3 Form of 5.375% Senior Note due 2023 (see Exhibit 4.2).        
           
  8-K 11/20/14 4.1  
           
  8-K 11/20/14 4.2  
           
4.6 Form of 5.375% Senior Note due 2022 (see Exhibit 4.5).        
           
  8-K 11/20/14 4.4  
           
4.8 Form of 5.750% Senior Note due 2025 (see Exhibit 4.7).        
           
  8-K 12/04/15 4.2  
           
4.10 Form of 5.875% Senior Note due 2026 (see Exhibit 4.9).        
           
  8-K 3/22/17 4.2  
           
4.12 Form of 5.375% Senior Notes due 2027 (see Exhibit 4.11).        
           
  8-K 9/20/17 4.2  
           
4.14 Form of 2.875% Senior Notes due 2025 (see Exhibit 4.13).        
           

    Incorporated by Reference  
Exhibit Number Exhibit Description Form 
Filing Date/
Period End Date
 Exhibit 
Filed
Herewith
10.11** Change in Control Severance Agreement by and between Charles Meyers and Equinix, Inc. dated September 30, 2010. 10-Q 9/30/10 10.42  
10.12** Form of amendment to existing severance agreement between the Registrant and each of Messrs. Meyers, Smith, Taylor and Van Camp 10-K 12/31/10 10.33  
10.13** Letter amendment, dated December 14, 2010, to Change in Control Severance Agreement, dated December 18, 2008, and letter agreement relating to expatriate benefits, dated April 22, 2008, as amended, by and between the Registrant and Eric Schwartz. 10-K 12/31/10 10.34  
10.14** International Long-Term Assignment Letter by and between Equinix, Inc. and Eric Schwartz, dated May 21, 2013. 10-Q 6/30/13 10.51  
10.15** Employment Agreement by and between Equinix (EMEA) B.V. and Eric Schwartz, dated as of August 7, 2013. 10-Q 9/30/13 10.54  
10.16** Restricted Stock Unit Agreement dated August 14, 2013 for Charles Meyers under the Equinix, Inc. 2000 Equity Incentive Plan. 10-Q 9/30/13 10.55  
10.17** Offer Letter from Equinix, Inc. to Karl Strohmeyer dated October 28, 2013. 10-Q 3/31/14 10.49  
10.18** Restricted Stock Unit Agreement for Karl Strohmeyer under the Equinix, Inc. 2000 Equity Incentive Plan. 10-Q 3/31/14 10.50  
10.19** Change in Control Severance Agreement by and between Karl Strohmeyer and Equinix, Inc. dated December 2, 2013. 10-Q 3/31/14 10.51  
10.20** 2014 Form of Revenue/Adjusted EBITDA Restricted Stock Unit Agreement for CEO and CFO. 10-Q 3/31/14 10.52  
10.21** 2014 Form of Revenue/Adjusted EBITDA Restricted Stock Unit Agreement for all other Section 16 officers. 10-Q 3/31/14 10.53  
10.22 Agreement for Purchase and Sale of Shares Among RW Brasil Fundo de Investimentos em Participação, Antônio Eduardo Zago De Carvalho and Sidney Victor da Costa Breyer, as Sellers, and Equinix Brasil Participaçãoes Ltda., as Purchaser, and Equinix South America Holdings LLC., as a Party for Limited Purposes and ALOG Soluções de Tecnologia em Informática S.A. as Intervening Consenting Party dated July 18, 2014 10-Q 9/30/14 10.67  

    Incorporated by Reference  
Exhibit Number Exhibit Description Form 
Filing Date/
Period End Date
 Exhibit 
Filed
Herewith
10.23 Credit Agreement, by and among Equinix, Inc., as borrower, Equinix LLC and Switch & Data LLC as guarantors, the Lenders (defined therein), Bank of America, N.A., as administrative agent, a Lender and L/C issuer, JPMorgan Chase Bank, N.A., and TD Securities (USA) LLC, as co-syndication agents, Barclays Bank PLC, Citibank, N.A., Royal Bank of Canada and ING Bank N.V., Singapore Branch, as Co-Documentation Agents and Merrill Lynch, Pierce, Fenner & Smith Incorporated, J.P. Morgan Securities LLC, and TD Securities (USA) LLC, as joint lead arrangers and book runners, dated December 17, 2014. 10-K 12/31/14 10.48  
10.24** 2015 Form of Revenue/ AFFO Restricted Stock Unit Agreement for executives. 10-Q 3/31/15 10.50  
10.25** 2015 Form of TSR Restricted Stock Unit Agreement for executives. 10-Q 3/31/15 10.51  
10.26** 2015 Form of Time-Based Restricted Stock Unit Agreement for executives. 10-Q 3/31/15 10.52  
10.27 First Amendment to Credit Agreement and first Amendment to Pledge and Security Agreement by and among Equinix, Inc., as borrower, the Guarantors (defined therein), the Lenders (defined therein) and Bank of America, N.A., as administrative agent, dated April 30, 2015. 10-Q 9/30/2015 10.52  
10.30 Second Amendment to Credit Agreement by and among Equinix, Inc., as borrower, the Guarantors (defined therein), the Lenders (defined therein) and Bank of America, N.A., as administrative agent, dated December 8, 2015. 10-K 12/31/15 10.55  
10.31** Equinix, Inc. 2016 Incentive Plan 10-Q 3/31/16 10.56  
10.32** 2016 Form of Revenue/AFFO Restricted Stock Unit Agreement for executives. 10-Q 3/31/16 10.57  
10.33** 2016 Form of TSR Restricted Stock Unit Agreement for executives. 10-Q 3/31/16 10.58  
10.34** 2016 Form of Time-Based Restricted Stock Unit Agreement for executives. 10-Q 3/31/16 10.59  
10.35** Restricted Stock Unit Award granted to John Hughes on February 25, 2016 10-Q 3/31/16 10.60  
10.36 Share Purchase Agreement with Digital Realty Trust, L.P., relating to the sale and purchase of shares in TelecityGroup UK LON Limited, Telecity Netherlands AMS01 AMS04 BV, Equinix Real Estate (TCY AMS04) B.V. and TelecityGroup Germany Fra2 GmbH, dated May 14, 2016. 10-Q 6/30/16 10.55  
10.37** Letter Agreement dated June 9, 2016, by and between Equinix, Inc. and Eric Schwartz, amending his International Long Term Assignment letter dated May 21, 2013 and Employment Agreement with Equinix (EMEA) B.V. dated August 7, 2013. 10-Q 6/30/16 10.56  
10.38** Term Loan Agreement dated as of September 30, 2016 among Equinix Japan K.K. as Borrower, the Lenders (defined therein) and Bank of Tokyo-Mitsubishi UFJ, Ltd., as Arranger and Agent. 10-Q 9/30/16 10.42  
    Incorporated by Reference  
Exhibit Number Exhibit Description Form 
Filing Date/
Period End Date
 Exhibit 
Filed
Herewith
  8-K 12/05/17 4.1  
           
  8-K 12/05/17 4.2  
           
4.17 Form of 2.875% Senior Notes due 2026 (see Exhibit 4.16).        
           
  8-K 03/14/18 4.2  
           
4.19 Form of 2.875% Senior Notes due 2024 (see Exhibit 4.18).        
           
  8-K 04/03/18 4.2  
           
4.21 Form of 5.00% Senior Notes due April 2019 (see Exhibit 4.20).        
           
4.22 Form of 5.00% Senior Notes due October 2019 (see Exhibit 4.20).        
           
4.23 Form of 5.00% Senior Notes due April 2020 (see Exhibit 4.20).        
           
4.24 Form of 5.00% Senior Notes due October 2020 (see Exhibit 4.20).        
           
4.25 Form of 5.00% Senior Notes due April 2021 (see Exhibit 4.20).        
           
  10-K 12/31/14 4.13  
           
  S-4 (File No. 333-93749) 12/29/1999 10.5  
           
  10-K 12/31/16 10.2  
           
  10-K 12/31/16 10.3  
           
  10-K 12/31/16 10.4  
           
  10-Q 6/30/14 10.5  
           
  10-K 12/31/08 10.32  
           
  10-K 12/31/08 10.33  
           
  10-K 12/31/08 10.35  
           

    Incorporated by Reference  
Exhibit Number Exhibit Description Form 
Filing Date/
Period End Date
 Exhibit 
Filed
Herewith
10.39 Third Amendment to Credit Agreement and Second Amendment to Pledge and Security Agreement
S-1/A
 (File No. 333-137607) filed by and among Equinix, Inc., as borrower, the Guarantors (defined therein), the Lenders (defined therein) and Bank of America, N.A., as administrative agent, dated December 22, 2016.Switch & Data Facilities Company
2/5/0710.9
       X
12.1 Statement of Computation of Ratios
10-Q9/30/1010.42
       X
21.1 Subsidiaries
10-K12/31/1010.33
       X
23.1 Consent of PricewaterhouseCoopers LLP, Independent Registered Public Accounting Firm
10-K12/31/1010.34
       X
31.1 Chief Executive Officer Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
10-Q6/30/1310.51
       X
31.2 Chief Financial Officer Certification pursuant to Section 302
10-Q9/30/1310.54
       X
32.1 Chief Executive Officer Certification pursuant to Section 906 of
10-Q9/30/1310.55
       X
32.2 Chief Financial Officer Certification pursuant
10-Q3/31/1410.49
       X
101.INS XBRL Instance Document.
10-Q3/31/1410.50
       X
101.SCH XBRL Taxonomy Extension Schema Document.
10-Q3/31/1410.51
       X
101.CAL XBRL Taxonomy Extension Calculation Document.
10-Q3/31/1610.57
       X
101.DEF XBRL Taxonomy Extension Definition Document.
10-Q3/31/1610.58
       X
101.LAB XBRL Taxonomy Extension Labels Document.
10-Q3/31/1610.59
       X
101.PRE XBRL Taxonomy Extension Presentation Document.
10-Q3/31/1710.35
       X
10-Q3/31/1710.36
10-Q3/31/1710.37

    Incorporated by Reference  
Exhibit Number Exhibit Description Form 
Filing Date/
Period End Date
 Exhibit 
Filed
Herewith
  10-Q 3/31/17 10.39  
           
  10-Q 3/31/18 10.31  
           
  10-Q 3/31/18 10.32  
           
  10-Q 3/31/18 10.33  
           
  10-Q 3/31/18 10.34  
           
  10-Q 9/30/14 10.67  
           
  10-Q 6/30/16 10.55  
           
  10-Q 6/30/16 10.56  
           
  10-Q 9/30/16 10.42  
           
  10-K 12/31/2017 10.40  
           
  10-Q 8/8/2018 10.35  
           

    Incorporated by Reference  
Exhibit Number Exhibit Description Form 
Filing Date/
Period End Date
 Exhibit 
Filed
Herewith
  10-Q 8/8/2018 10.36  
        X
           
        X
           
        X
           
        X
           
        X
           
        X
           
        X
           
101.INS XBRL Instance Document.       X
           
101.SCH XBRL Taxonomy Extension Schema Document.       X
           
101.CAL XBRL Taxonomy Extension Calculation Document.       X
           
101.DEF XBRL Taxonomy Extension Definition Document.       X
           
101.LAB XBRL Taxonomy Extension Labels Document.       X
           
101.PRE XBRL Taxonomy Extension Presentation Document.       X
** Management contracts or compensation plans or arrangements in which directors or executive officers are eligible to participate.
(b)Exhibits.
See (a) (3) above.
(c)Financial Statement Schedule.
See (a) (2) above.

ITEM 16.    FORM 10-K SUMMARY
ITEM 16.FORM 10-K SUMMARY
Not applicable.

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this Annual Report on Form 10-K to be signed on its behalf by the undersigned, thereunto duly authorized.

  
EQUINIX, INC.
(Registrant)
   
February 27, 201722, 2019By/s/ STEPHEN M. SMITHCHARLES MEYERS
  Stephen M. SmithCharles Meyers
  President and Chief Executive Officer and President
POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Stephen M. SmithCharles Meyers or Keith D. Taylor, or either of them, each with the power of substitution, their attorney‑in‑fact,attorney-in-fact, to sign any amendments to this Annual Report on Form 10‑K10-K (including post‑effectivepost-effective amendments), and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming all that each of said attorneys‑in‑fact,attorneys-in-fact, or their substitute or substitutes, may do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

SignatureTitle
Date

/s/ STEPHEN M. SMITHCHARLES MEYERS
President and Chief Executive Officer and President (Principal Executive Officer)


February 27, 201722, 2019
Stephen M. Smith

Charles Meyers
/s/ KEITH D. TAYLOR
Chief Financial Officer (Principal Financial andOfficer)
February 22, 2019
Keith D. Taylor
/s/ SIMON MILLER
Chief Accounting Officer (Principal Accounting Officer)


February 27, 201722, 2019
Keith D. Taylor

Simon Miller
/s/ PETER F. VAN CAMPExecutive ChairmanFebruary 27, 201722, 2019
Peter F. Van Camp
/s/ THOMAS A. BARTLETTDirectorFebruary 27, 201722, 2019
Thomas A. Bartlett
/s/ NANCI CALDWELL
Director

February 27, 201722, 2019
Nanci Caldwell
/s/ GARY F. HROMADKO
Director

February 27, 201722, 2019
Gary F. Hromadko

/s/ JOHN HUGHESDirector
February 27, 2017
John Hughes
/s/ SCOTT G. KRIENS
Director

February 27, 201722, 2019
Scott G. Kriens

/s/ WILLIAM K. LUBY
Director

February 27, 201722, 2019
William K. Luby

/s/ IRVING F. LYONS, III
Director

February 27, 201722, 2019
Irving F. Lyons, III

/s/ CHRISTOPHER B. PAISLEY
Director

February 27, 201722, 2019
Christopher B. Paisley


79


INDEX TO EXHIBITS
Exhibit
Number
 Description of Document
2.5 Amendment No. 1 to the Transaction
10.2 2000 Equity Incentive Plan, as amended.
10.3 2000 Director Option Plan, as amended.
10.42001 Supplemental Stock Plan, as amended.
10.39Third Amendment to Credit Agreement and Second Amendment to Pledge and Security Agreement by and among Equinix, Inc., as borrower, the Guarantors (defined therein), the Lenders (defined therein) and Bank of America, N.A., as administrative agent, dated December 22, 2016.
12.1Statement of Computation of Ratios
21.1
23.1 
31.1 
31.2 
32.1 
32.2 
101.INS XBRL Instance Document.
101.SCH XBRL Taxonomy Extension Schema Document.
101.CAL XBRL Taxonomy Extension Calculation Document.
101.DEF XBRL Taxonomy Extension Definition Document.
101.LAB XBRL Taxonomy Extension Labels Document.
101. PRE XBRL Taxonomy Extension Presentation Document.
** Management contracts or compensation plans or arrangements in which directors or executive officers are eligible to participate.


Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of Equinix, Inc.
Opinions on the Financial Statements and Internal Control over Financial Reporting
In our opinion,We have audited the accompanying consolidated balance sheets of Equinix, Inc. and its subsidiaries (the “Company”) as of December 31, 2018 and 2017, and the related consolidated statements of operations, of comprehensive income (loss), of stockholders’stockholder’s equity and other comprehensive income (loss), and of cash flows present fairly, in all material respects, the financial position of Equinix, Inc. and its subsidiaries as of December 31, 2016 and 2015, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2016in conformity with accounting principles generally accepted in2018, including the United States of America. In addition, in our opinion, therelated notes and financial statement schedule listed in the accompanying index appearing under item 15(a)(1)presents fairly, in all material respects,(2) (collectively referred to as the information set forth therein when read in conjunction with“consolidated financial statements”). We also have audited the related consolidated financial statements. Also in our opinion, the Company maintained, in all material respects, effectiveCompany's internal control over financial reporting as of December 31, 2016,2018, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2018 and 2017, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2018 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.
Change in Accounting Principle
As discussed in Note 1 to the consolidated financial statements, the Company changed the manner in which it accounts for revenue from contracts with customers as of January 1, 2018.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, and financial statement schedule, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in Management's Report on Internal Control Overover Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on thesethe Company's consolidated financial statements on the financial statement schedule, and on the Company's internal control over financial reporting based on our integrated audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States).PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence supportingregarding the amounts and disclosures in the consolidated financial statements, assessingstatements. Our audits also included evaluating the accounting principles used and significant estimates made by management, andas well as evaluating the overall presentation of the consolidated financial statement presentation.statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’scompany's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’scompany's internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable

assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’scompany's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
As described in Management’s Report on Internal Control Over Financial Reporting, management has excluded Telecity Group from its assessment of internal control over financial reporting as of December 31, 2016 because it was acquired by the Company in a purchase business combination during 2016. We have also excluded Telecity Group from our audit of internal control over financial reporting. Telecity Group is a wholly-owned subsidiary whose total assets and total revenues represent 9% and 11%, respectively, of the related consolidated financial statement amounts as of and for the year ended December 31, 2016.
/s/PricewaterhouseCoopers LLP
San Jose, California
February 27, 201722, 2019


We have served as the Company's auditor since 2000.

EQUINIX, INC.
Consolidated Balance Sheets
(in thousands, except share and per share data)

December 31,December 31,
2016 20152018
2017
Assets
Current assets:   


Cash and cash equivalents$748,476
 $2,228,838
$606,166

$1,412,517
Short-term investments3,409
 12,875
4,540

28,271
Accounts receivable, net of allowance for doubtful accounts of $15,675 and $10,352396,245
 291,964
Current portion of restricted cash15,065
 479,417
Accounts receivable, net of allowance for doubtful accounts of $15,950 and $18,228630,119

576,313
Other current assets304,331
 212,929
274,857

232,027
Assets held for sale
 33,257
Total current assets1,467,526
 3,259,280
1,515,682

2,249,128
Long-term investments10,042
 4,584


9,243
Property, plant and equipment, net7,199,210
 5,606,436
11,026,020

9,394,602
Goodwill2,986,064
 1,063,200
4,836,388

4,411,762
Intangible assets, net719,231
 224,565
2,333,296

2,384,972
Other assets226,298
 198,630
533,252

241,750
Total assets$12,608,371
 $10,356,695
$20,244,638

$18,691,457
Liabilities and Stockholders' Equity
Current liabilities:   


Accounts payable and accrued expenses$581,739
 $400,948
$756,692

$719,257
Accrued property, plant and equipment144,842
 103,107
179,412

220,367
Current portion of capital lease and other financing obligations101,046
 40,121
77,844

78,705
Current portion of mortgage and loans payable67,928
 770,236
73,129

64,491
Convertible debt
 146,121
Current portion of senior notes300,999
 
Other current liabilities133,140
 192,286
126,995

159,914
Liabilities held for sale
 3,535
Total current liabilities1,028,695
 1,656,354
1,515,071

1,242,734
Capital lease and other financing obligations, less current portion1,410,742
 1,287,139
1,441,077

1,620,256
Mortgage and loans payable, less current portion1,369,087
 472,769
1,310,663

1,393,118
Senior notes3,810,770
 3,804,634
Senior notes, less current portion8,128,785

6,923,849
Other liabilities623,248
 390,413
629,763

661,710
Total liabilities8,242,542
 7,611,309
13,025,359

11,841,667
Commitments and contingencies (Note 15)
 



Stockholders' equity:   


Preferred stock, $0.001 par value per share: 100,000,000 shares authorized in 2016 and 2015; zero shares issued and outstanding
 
Common stock, $0.001 par value per share: 300,000,000 shares authorized in 2016 and 2015; 71,817,430 issued and 71,409,015 outstanding in 2016 and 62,134,894 issued and 62,100,159 outstanding in 201572
 62
Preferred stock, $0.001 par value per share: 100,000,000 shares authorized in 2018 and 2017; zero shares issued and outstanding


Common stock, $0.001 par value per share: 300,000,000 shares authorized in 2018 and 2017; 81,119,117 issued and 80,722,258 outstanding in 2018 and 79,440,404 issued and 79,038,062 outstanding in 201781

79
Additional paid-in capital7,413,519
 4,838,444
10,751,313

10,121,323
Treasury stock, at cost; 408,415 shares in 2016 and 34,735 shares in 2015(147,559) (7,373)
Treasury stock, at cost; 396,859 shares in 2018 and 402,342 shares in 2017(145,161)
(146,320)
Accumulated dividends(1,969,645) (1,468,472)(3,331,200)
(2,592,792)
Accumulated other comprehensive loss(949,142) (509,059)(945,702)
(785,189)
Retained earnings (accumulated deficit)18,584
 (108,216)
Retained earnings889,948

252,689
Total stockholders' equity4,365,829
 2,745,386
7,219,279

6,849,790
Total liabilities and stockholders' equity$12,608,371
 $10,356,695
$20,244,638

$18,691,457

See accompanying notes to consolidated financial statements.

EQUINIX, INC.
Consolidated Statements of Operations
(in thousands, except per share data)
Years Ended December 31,Years Ended December 31,
2016 2015 20142018 2017 2016
Revenues$3,611,989
 $2,725,867
 $2,443,776
$5,071,654
 $4,368,428
 $3,611,989
Costs and operating expenses:          
Cost of revenues1,820,870
 1,291,506
 1,197,885
2,605,475
 2,193,149
 1,820,870
Sales and marketing438,742
 332,012
 296,103
633,702
 581,724
 438,742
General and administrative694,561
 493,284
 438,016
826,694
 745,906
 694,561
Acquisition costs64,195
 41,723
 2,506
34,413
 38,635
 64,195
Impairment charges7,698
 
 

 
 7,698
Gain on asset sales(32,816) 
 
(6,013) 
 (32,816)
Total costs and operating expenses2,993,250
 2,158,525
 1,934,510
4,094,271
 3,559,414
 2,993,250
Income from operations618,739
 567,342
 509,266
977,383
 809,014
 618,739
Interest income3,476
 3,581
 2,891
14,482
 13,075
 3,476
Interest expense(392,156) (299,055) (270,553)(521,494) (478,698) (392,156)
Other income (expense)(57,924) (60,581) 119
14,044
 9,213
 (57,924)
Loss on debt extinguishment(12,276) (289) (156,990)(51,377) (65,772) (12,276)
Income from continuing operations before income taxes159,859
 210,998
 84,733
433,038
 286,832
 159,859
Income tax expense(45,451) (23,224) (345,459)(67,679) (53,850) (45,451)
Net income (loss) from continuing operations114,408
 187,774
 (260,726)
Net income from continuing operations365,359
 232,982
 114,408
Net income from discontinued operations, net of tax12,392
 
 

 
 12,392
Net income (loss)126,800
 187,774
 (260,726)
Net loss attributable to non-controlling interest
 
 1,179
Net income (loss) attributable to Equinix$126,800
 $187,774
 $(259,547)
Net income$365,359
 $232,982
 $126,800
          
Earnings per share ("EPS") attributable to Equinix:     
Earnings per share ("EPS"):     
Basic EPS from continuing operations$1.63
 $3.25
 $(4.96)$4.58
 $3.03
 $1.63
Basic EPS from discontinued operations0.18
 
 

 
 0.18
Basic EPS$1.81
 $3.25
 $(4.96)$4.58
 $3.03
 $1.81
Weighted-average shares70,117
 57,790
 52,359
79,779
 76,854
 70,117
Dilutive EPS from continuing operations$1.62
 $3.21
 $(4.96)$4.56
 $3.00
 $1.62
Dilutive EPS from discontinued operations0.17
 
 

 
 0.17
Diluted EPS$1.79
 $3.21
 $(4.96)$4.56
 $3.00
 $1.79
Weighted-average shares70,816
 58,483
 52,359
80,197
 77,535
 70,816
Cash dividends declared per common share$9.12
 $8.00
 $7.00
See accompanying notes to consolidated financial statements.

EQUINIX, INC.
Consolidated Statements of Comprehensive Income (Loss)
(in thousands)
 Years Ended December 31,
 2016 2015 2014
Net income (loss)$126,800
 $187,774
 $(260,726)
Other comprehensive income (loss), net of tax:     
Foreign currency translation adjustment ("CTA") loss(507,420) (186,763) (204,065)
Net investment hedge CTA gain45,505
 4,484
 
Unrealized gain (loss) on available-for-sale securities2,249
 (40) (279)
Unrealized gain on cash flow hedges19,551
 4,550
 8,790
Net actuarial gain (loss) on defined benefit plans32
 1,153
 (2,001)
Total other comprehensive loss, net of tax(440,083) (176,616) (197,555)
Comprehensive income (loss), net of tax(313,283) 11,158
 (458,281)
Net loss attributable to redeemable non-controlling interests
 
 1,179
Other comprehensive income attributable to redeemable non-controlling interest
 
 (1,810)
Comprehensive income (loss) attributable to Equinix$(313,283) $11,158
 $(458,912)
 Years Ended December 31,
 2018 2017 2016
Net income$365,359
 $232,982
 $126,800
Other comprehensive income (loss), net of tax:     
Foreign currency translation adjustment ("CTA") gain (loss), net of tax effects of $4,419, $0 and $0(421,743) 454,269
 (507,420)
Net investment hedge CTA gain (loss), net of tax effects of $1,358, $0 and $0219,628
 (235,292) 45,505
Unrealized gain on available-for-sale securities, net of tax effects of $0, $(10) and $(784)
 14
 2,249
Unrealized gain (loss) on cash flow hedges, net of tax effects of $(14,557), $18,542 and $(6,760)43,671
 (54,895) 19,551
Net actuarial gain (loss) on defined benefit plans, net of tax effects of $(15), $39 and $(8)55
 (143) 32
Total other comprehensive income (loss), net of tax(158,389) 163,953
 (440,083)
Comprehensive income (loss), net of tax$206,970
 $396,935
 $(313,283)
See accompanying notes to consolidated financial statements.


EQUINIX, INC.
Consolidated Statements of Stockholders’ Equity and Other Comprehensive Income (Loss)
For the Three Years Ended December 31, 2016
(in thousands, except share data)
             
Accumulated
Other
Comprehensive
Income (Loss)
 
Retained
Earnings
(Accumulated
Deficit)
 
Total
Stockholders'
Equity
 Common stock Treasury stock 
Additional
Paid-in Capital
 
Accumulated
Dividends
   
 Shares Amount Shares Amount     
Balance as of December 31, 201350,233,224
 $50
 (644,216) $(84,663) $2,693,887
 $
 $(113,767) $(36,443) $2,459,064
Net loss
 
 
 
 
 
 
 (260,726) (260,726)
Net loss attributable to non-controlling interests
 
 
 
 
 
 
 1,179
 1,179
Other comprehensive loss
 
 
 
 
 
 (197,555) 
 (197,555)
Other comprehensive income attributable to redeemable non-controlling interests
 
 
 
 
 
 (1,810) 
 (1,810)
Issuance of common stock and release of treasury stock for employee equity awards933,554
 1
 7,846
 1,185
 28,134
 
 
 
 29,320
Common shares repurchased
 
 (1,517,743) (297,958) 
 
 
 
 (297,958)
Issuance of common stock and release of treasury stock for the exchanges and conversions of 4.75% convertible debt1,411,851
 2
 1,000,102
 147,706
 43,024
 
 
 
 190,732
Issuance of common stock and release of treasury stock for the exchange of 3.00% convertible debt1,248,578
 1
 700,000
 139,004
 77,953
 
 
 
 216,958
Issuance of common stock and release of treasury stock for conversions of 3.00% convertible debt1,195,496
 1
 400,144
 83,315
 95,428
 
 
 
 178,744
Issuance of common stock for special distribution1,482,419
 2
 
 
 332,732
 (414,856) 
 
 (82,122)
Accrued dividends on unvested equity awards
 
 
 
 
 (9,531) 
 
 (9,531)
Change in redemption value of redeemable non-controlling interests
 
 
 
 (90,913) 
 
 
 (90,913)
Purchase of redeemable non-controlling interests
 
 
 
 17,977
 
 (19,311) 
 (1,334)
Tax benefit from employee stock plans
 
 
 
 18,561
 
 
 
 18,561
Stock-based compensation, net of estimated forfeitures
 
 
 
 117,522
 
 
 
 117,522
Balance as of December 31, 201456,505,122
 57
 (53,867) (11,411) 3,334,305
 (424,387) (332,443) (295,990) 2,270,131
Net income
 
 
 
 
 
 
 187,774
 187,774
Other comprehensive loss
 
 
 
 
 
 (176,616) 
 (176,616)
Issuance of common stock in public offering of common stock2,994,792
 3
 
 
 829,493
 
 
 
 829,496
Issuance of common stock and release of treasury stock for employee equity awards856,406
 1
 7,348
 1,546
 28,493
 
 
 
 30,040
Issuance of common stock and release of treasury stock for the exchanges and conversions of 4.75% convertible debt90,163
 
 11,784
 2,492
 5,392
 
 
 
 7,884
Dividend distributions
 
 
 
 
 (393,584) 
 
 (393,584)
Settlement of accrued dividends on vested equity awards
 
 
 
 3,775
 
 
 
 3,775
Issuance of common stock and cash payment for special distribution1,688,411
 1
 
 
 501,513
 (627,221) 
 
 (125,707)
Accrued dividends on unvested equity awards
 
 
 
 
 (23,280) 
 
 (23,280)
Tax benefit from employee stock plans
 
 
 
 30
 
 
 
 30
EQUINIX, INC.
Consolidated Statements of Stockholders’ Equity and Other Comprehensive Income (Loss)
For the Three Years Ended December 31, 2018
(in thousands, except share data)
             
Accumulated
Other
Comprehensive
Income (Loss)
 
Retained
Earnings
(Accumulated
Deficit)
 
Total
Stockholders'
Equity
 Common stock Treasury stock 
Additional
Paid-in Capital
 
Accumulated
Dividends
   
 Shares Amount Shares Amount     
Balance as of December 31, 201562,134,894
 $62
 (34,735) $(7,373) $4,838,444
 $(1,468,472) $(509,059) $(108,216) $2,745,386
Net income
 
 
 
 
 
 
 126,800
 126,800
Other comprehensive loss
 
 
 
 
 
 (440,083) 
 (440,083)
Issuance of common stock and release of treasury stock for employee equity awards847,374
 1
 7,099
 1,502
 33,172
 
 
 
 34,675
Issuance of common stock for TelecityGroup acquisition6,853,500
 7
 
 
 2,077,905
 
 
 
 2,077,912
Issuance of common stock, net and release of treasury stock for the exchanges and conversions of 4.75% convertible debt1,981,662
 2
 (380,779) (141,688) 291,711
 
 
 
 150,025
Dividend distributions
 
 
 
 
 (492,403) 
 
 (492,403)
Settlement of accrued dividends on vested equity awards
 
 
 
 8,270
 (1,000) 
 
 7,270
Accrued dividends on unvested equity awards
 
 
 
 
 (7,770) 
 
 (7,770)
Tax benefit from employee stock plans
 
 
 
 2,773
 
 
 
 2,773
Stock-based compensation, net of estimated forfeitures
 
 
 
 161,244
 
 
 
 161,244
Balance as of December 31, 201671,817,430
 72
 (408,415) (147,559) 7,413,519
 (1,969,645) (949,142) 18,584
 4,365,829
Adjustment from adoption of new accounting standard
 
 
 
 
 
 
 1,123
 1,123
Net income
 
 
 
 
 
 
 232,982
 232,982
Other comprehensive income
 
 
 
 
 
 163,953
 
 163,953
Issuance of common stock in public offering of common stock, net6,069,444
 6
 
 
 2,126,333
 
 
 
 2,126,339
Issuance of common stock and release of treasury stock for employee equity awards790,329
 1
 6,073
 1,239
 40,449
 
 
 
 41,689
Issuance of common stock under 2017 ATM Program, net763,201
 
 
 
 355,082
 
 
 
 355,082
Dividend distributions
 
 
 
 
 (612,085) 
 
 (612,085)
Settlement of accrued dividends on vested equity awards
 
 
 
 4,280
 (890) 
 
 3,390
Accrued dividends on unvested equity awards
 
 
 
 
 (10,172) 
 
 (10,172)
Stock-based compensation, net of estimated forfeitures
 
 
 
 181,660
 
 
 
 181,660
Balance as of December 31, 201779,440,404
 79
 (402,342) (146,320) 10,121,323
 (2,592,792) (785,189) 252,689
 6,849,790
Adjustment from adoption of new accounting standard
 
 
 
 
 
 (2,124) 271,900
 269,776
Net income
 
 
 
 
 
 
 365,359
 365,359
Other comprehensive loss
 
 
 
 
 
 (158,389) 
 (158,389)
Issuance of common stock and release of treasury stock for employee equity awards747,779
 1
 5,483
 1,159
 48,976
 
 
 
 50,136
Issuance of common stock under 2017 ATM Program, net930,934
 1
 
 
 388,171
 
 
 
 388,172

             
Accumulated
Other
Comprehensive
Income (Loss)
 
Retained
Earnings
(Accumulated
Deficit)
 
Total
Stockholders'
Equity
 Common stock Treasury stock 
Additional
Paid-in Capital
 
Accumulated
Dividends
   
 Shares Amount Shares Amount     
Stock-based compensation, net of estimated forfeitures
 
 
 
 135,443
 
 
 
 135,443
Balance as of December 31, 201562,134,894
 62
 (34,735) (7,373) 4,838,444
 (1,468,472) (509,059) (108,216) 2,745,386
Net income
 
 
 
 
 
 
 126,800
 126,800
Other comprehensive loss
 
 
 
 
 
 (440,083) 
 (440,083)
Issuance of common stock and release of treasury stock for employee equity awards847,374
 1
 7,099
 1,502
 33,172
 
 
 
 34,675
Issuance of common stock for TelecityGroup acquisition6,853,500
 7
 
 
 2,077,905
 
 
 
 2,077,912
Issuance of common stock and re-purchase of treasury stock for the conversion of 4.75% convertible debt and settlement of capped call1,981,662
 2
 (380,779) (141,688) 291,711
 
 
 
 150,025
Dividend distributions
 
 
 
 
 (492,403) 
 
 (492,403)
Settlement of accrued dividends on vested equity awards
 
 
 
 8,270
 (1,000) 
 
 7,270
Accrued dividends on unvested equity awards
 
 
 
 
 (7,770) 
 
 (7,770)
Tax benefit from employee stock plans
 
 
 
 2,773
 
 
 
 2,773
Stock-based compensation, net of estimated forfeitures
 
 
 
 161,244
 
 
 
 161,244
Balance as of December 31, 201671,817,430
 $72
 (408,415) $(147,559) $7,413,519
 $(1,969,645) $(949,142) $18,584
 $4,365,829
EQUINIX, INC.
Consolidated Statements of Stockholders’ Equity and Other Comprehensive Income (Loss) - continued
For the Three Years Ended December 31, 2018
(in thousands, except share data)
             
Accumulated
Other
Comprehensive
Income (Loss)
 
Retained
Earnings
(Accumulated
Deficit)
 
Total
Stockholders'
Equity
 Common stock Treasury stock 
Additional
Paid-in Capital
 
Accumulated
Dividends
   
 Shares Amount Shares Amount     
Dividend distributions
 
 
 
 
 (727,448) 
 
 (727,448)
Settlement of accrued dividends on vested equity awards
 
 
 
 2,319
 (876) 
 
 1,443
Accrued dividends on unvested equity awards
 
 
 
 
 (10,084) 
 
 (10,084)
Stock-based compensation, net of estimated forfeitures
 
 
 
 189,799
 
 
 
 189,799
Noncontrolling interests
 
 
 
 725
 
 
 
 725
Balance as of December 31, 201881,119,117
 $81
 (396,859) $(145,161) $10,751,313
 $(3,331,200) $(945,702) $889,948
 $7,219,279
See accompanying notes to consolidated financial statements.

EQUINIX, INC.
Consolidated Statements of Cash Flows
(in thousands)
Years Ended December 31,Years Ended December 31,
2016 2015 20142018 2017 2016
Cash flows from operating activities:          
Net income (loss)$126,800
 $187,774
 $(260,726)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:     
Net income$365,359
 $232,982
 $126,800
Adjustments to reconcile net income to net cash provided by operating activities:     
Depreciation714,345
 498,134
 453,935
1,024,073
 865,472
 714,345
Stock-based compensation155,567
 132,443
 117,990
180,716
 175,500
 155,567
Excess tax benefits from stock-based compensation(2,773) (30) (19,582)
Amortization of intangible assets122,862
 27,446
 27,756
203,416
 177,008
 122,862
Amortization of debt issuance costs and debt discounts19,137
 16,050
 18,667
Amortization of debt issuance costs and debt discounts and premiums13,618
 24,449
 19,137
Provision for allowance for doubtful accounts8,260
 5,037
 7,093
7,236
 5,627
 8,260
Impairment charges
 
 7,698
Gain on asset sales(32,816) 
 
(6,013) 
 (32,816)
Gain on sale of discontinued operations(2,351) 
 

 
 (2,351)
Impairment charges7,698
 
 
Loss on debt extinguishment12,276
 289
 156,990
51,377
 65,772
 12,276
Other items20,609
 16,490
 19,912
19,660
 (11,243) 20,609
Changes in operating assets and liabilities:          
Accounts receivable(100,230) (44,583) (101,966)(52,931) (161,774) (100,230)
Income taxes, net29,020
 (109,579) 226,774
(10,670) (34,936) 29,020
Other assets(72,831) (70,371) (6,496)(47,635) 20,180
 (72,831)
Accounts payable and accrued expenses61,565
 109,125
 10,681
35,495
 74,488
 61,565
Other liabilities(50,558) 126,568
 38,392
31,725
 5,708
 (50,558)
Net cash provided by operating activities1,016,580
 894,793
 689,420
1,815,426
 1,439,233
 1,019,353
Cash flows from investing activities:          
Purchases of investments(42,325) (359,031) (545,997)(65,180) (57,926) (42,325)
Sales and maturities of investments53,164
 873,139
 785,548
85,777
 46,421
 53,164
Business acquisitions, net of cash acquired(1,766,907) (245,553) 
Business acquisitions, net of cash and restricted cash acquired(829,687) (3,963,280) (1,766,606)
Purchases of real estate(28,118) (38,282) (16,791)(182,418) (95,083) (28,118)
Purchases of other property, plant and equipment(1,113,365) (868,120) (660,203)(2,096,174) (1,378,725) (1,113,365)
Proceeds from sale of assets, net of cash transferred851,582
 
 
12,154
 47,767
 851,582
Increase in restricted cash(21,901) (512,319) (968)
Release of restricted cash475,715
 15,239
 2,572
Net cash used in investing activities(1,592,155) (1,134,927) (435,839)(3,075,528) (5,400,826) (2,045,668)
Cash flows from financing activities:          
Purchases of treasury stock
 
 (297,958)
Proceeds from employee equity awards34,179
 30,040
 29,320
50,136
 41,696
 34,179
Excess tax benefits from stock-based compensation2,773
 30
 19,582
Payment of dividends and special distribution(499,463) (521,461) (83,266)(738,600) (621,497) (499,463)
Purchase of non-controlling interests
 
 (226,276)
Proceeds from public offering of common stock, net of issuance costs
 829,496
 
388,172
 2,481,421
 
Proceeds from senior notes
 1,100,000
 1,250,000
929,850
 3,628,701
 
Proceeds from loans payable1,168,304
 1,197,108
 508,826
424,650
 2,056,876
 1,168,304
Repayment of senior notes
 
 (750,000)
 (500,000) 
Repayment of convertible debt(51) 
 (29,513)
Repayment of capital lease and other financing obligations(114,385) (28,663) (18,030)(103,774) (93,470) (114,385)
Repayment of mortgage and loans payable(1,462,888) (715,270) (153,473)(447,473) (2,277,798) (1,462,888)
Debt extinguishment costs(11,380) 
 (116,517)(20,556) (26,122) (11,380)
Debt issuance costs(11,381) (18,098) (25,294)(12,218) (81,047) (11,381)
Other financing activities725
 (900) (51)
Net cash provided by (used in) financing activities(894,292) 1,873,182
 107,401
470,912
 4,607,860
 (897,065)
Effect of foreign currency exchange rates on cash and cash equivalents(10,495) (15,127) (11,959)
Net increase (decrease) in cash and cash equivalents(1,480,362) 1,617,921
 349,023
Cash and cash equivalents at beginning of period2,228,838
 610,917
 261,894
Cash and cash equivalents at end of period$748,476
 $2,228,838
 $610,917
Effect of foreign currency exchange rates on cash, cash equivalents and restricted cash(33,907) 31,187
 (21,800)
Net increase (decrease) in cash, cash equivalents and restricted cash(823,097) 677,454
 (1,945,180)
Cash, cash equivalents and restricted cash at beginning of period1,450,701
 773,247
 2,718,427
Cash, cash equivalents and restricted cash at end of period$627,604
 $1,450,701
 $773,247
Supplemental cash flow information          
Cash paid for taxes$39,320
 $132,302
 $117,197
$93,375
 $72,641
 $39,320
Cash paid for interest$350,083
 $237,410
 $262,018
$496,795
 $444,793
 $350,083
     
     
Cash and cash equivalents$606,166
 $1,412,517
 $748,476
Current portion of restricted cash included in other current assets10,887
 26,919
 15,065
Non-current portion of restricted cash included in other assets10,551
 11,265
 9,706
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows$627,604
 $1,450,701
 $773,247
     
See accompanying notes to consolidated financial statements.

EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
1.    Nature of Business and Summary of Significant Accounting Policies
Nature of Business
Equinix, Inc. (“Equinix”("Equinix" or the “Company”"Company") was incorporated in Delaware on June 22, 1998. Equinix provides colocation space and related services.offerings. Global enterprises, content providers, financial companies and network service providers rely upon Equinix’sEquinix's insight and expertise to safehouse and connect their most valued information assets. The Company operates International Business ExchangeTM (“IBX®”("IBX®") data centers, or IBX data centers, across the Americas; Europe, Middle East and Africa (“EMEA”("EMEA") and Asia-Pacific geographic regions where customers directly interconnect with a network ecosystem of partners and customers. More than 1,4001,800 network service providers offer access to the world’sworld's internet routes inside the Company’sCompany's IBX data centers. This access to internet routes provides Equinix customers improved reliability and streamlined connectivity while significantly reducing costs by reaching a critical mass of networks within a centralized physical location.
The Company beganhas been operating as a Real Estate Investment Trust ("REIT")real estate investment trust for federal income tax purposes ("REIT") effective January 1, 2015. See “Income Taxes”"Income Taxes" in Note 14 below for additional information.
On November 2, 2015,April 18, 2018, the Company acquired Bit-isle, Inc. ("Bit-isle"), a Tokyo-based company which primarily provides data center servicesall of the equity interests in Japan. On January 15, 2016,Metronode from the Ontario Teachers' Pension Plan Board (the "Metronode Acquisition") and on April 2, 2018, the Company completed itsthe acquisition of Telecity Group plc ("TelecityGroup"Infomart Dallas, including its operations and tenants, from ASB Real Estate Investments (the "Infomart Dallas Acquisition") which provides. On October 9, 2017, the Company completed the acquisition of Itconic, a data center servicesbusiness in Europe.Spain and Portugal and on October 6, 2017, the Company completed the acquisition of Zenium's data center business in Istanbul. On May 1, 2017, the Company completed the acquisition of certain colocation business from Verizon Communications Inc. ("Verizon") consisting of 29 data center buildings located in the United States, Brazil and Colombia (the "Verizon Data Center Acquisition"). On February 3, 2017, the Company acquired IO UK's data center operating business in Slough, United Kingdom ("IO Acquisition"). On August 1, 2016, the Company completed the purchase of Digital Realty's operating business in Paris (the "Paris IBX Data Center Acquisition"), which currently houseshoused Equinix' Paris 2 and Paris 3 data centers. On January 15, 2016, the Company completed its acquisition of Telecity Group plc ("TelecityGroup") which provided data center solutions in Europe. As a result of these acquisitions, the Company operates 150200 IBX data centers in 4152 markets across five continents.
Basis of Presentation, Consolidation and Foreign Currency
The accompanying consolidated financial statements include the accounts of Equinix and its subsidiaries, including the acquisitions of Metronode from April 18, 2018, Infomart Dallas from April 2, 2018, Itconic from October 9, 2017, the Zenium data center from October 6, 2017, the Verizon data center business from May 1, 2017, the IO UK data center operating business from February 3, 2017, the Paris IBX Data Center from August 1, 2016, and TelecityGroup from January 15, 2016, Bit-isle from November 2, 2015 and Nimbo Technologies Inc. ("Nimbo") from January 14, 2015.2016. All intercompany accounts and transactions have been eliminated in consolidation. Foreign exchange gains or losses resulting from foreign currency transactions, including intercompany foreign currency transactions, that are anticipated to be repaid within the foreseeable future, are reported within other income (expense) on the Company’sCompany's accompanying consolidated statements of operations. For additional information on the impact of foreign currencies to the Company’sCompany's consolidated financial statements, see “Accumulated"Accumulated Other Comprehensive Loss”Loss" in Note 12.
Use of Estimates
The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States ("U.S.") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. On an ongoing basis, the Company evaluates its estimates, including, but not limited to, those related to the allowance for doubtful accounts, fair values of financial instruments, intangible assets and goodwill, useful lives of intangible assets and property, plant and equipment, assets acquired and liabilities assumed from acquisitions, asset retirement obligations restructuring charges, redemption value of redeemable non-controlling interests and income taxes. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable.
Cash, Cash Equivalents and Short-Term and Long-Term Investments
The Company considers all highly liquid instruments with an original maturity from the date of purchase of three months or less to be cash equivalents. Cash equivalents consist of money market mutual funds and highly liquid debt securities of corporations and certificates of deposit with original

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



maturities up to 90 days. Short-term investments generally consist of debt securitiescertificates of deposit with original maturities of between 90 days and one year. Long-term investments consist of debt securitiescertificates of deposit with original maturities greater than 365 daysof one year or more and publicly traded equity securities. The Company’s fixedPublicly traded equity securities are measured at fair value with changes in the fair values recognized within other income securities and(expense) in the Company's consolidated statements of operations. Prior to the adoption of ASU 2016-01, the Company's investments in publicly traded equity securities are classified as “available-for-sale”"available-for-sale" investments and are carriedmeasured at fair valuevalues with unrealized gains and losses reported in stockholders’stockholders' equity as a component of other comprehensive income (loss).or loss. Upon adoption of ASU 2016-01 on January 1, 2018, the Company recorded a net cumulative effect increase of $2.1 million to retained earnings. The cost of securities sold is based on the specific identification method. The Company reviews its investment portfolio quarterly to determine if any securities may be other-than-temporarily impaired due to increased credit risk, changes in industry or sector of a certain instrument or ratings downgrades.

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Equity Method and Cost Method Investments
The Company's investments in non-marketable equity securities are accounted under the cost method. The Company records the dividends declared by the investees in other income and expense in the consolidated statement of operations and records any dividends in excess of earnings as a reduction of cost of investment. The Company's other equity investments include private equity investments which aregenerally accounted under the equity method. TheFor equity method investments, the Company adjusts the carrying amount of an investment for its share of the earnings and losses of the investees and recognizes its share of income or loss in other income and expense in the consolidated statement of operations. The Company records cost method andnon-marketable equity method investmentsinvestment in other assets in the consolidated balance sheet. The Company reviews these investments periodically to determine if any investments may be other-than-temporarily impaired primarily basedconsidering both qualitative and quantitative factors that may have a significant impact on the financial condition and near-term prospects of these companies and funds.investee's fair value.
Financial Instruments and Concentration of Credit Risk
Financial instruments which potentially subject the Company to concentrations of credit risk consist of cash and cash equivalents, short-term investments, long-term investments and accounts receivable. Risks associated with cash and cash equivalents, short-term investments and long-term investments are mitigated by the Company’sCompany's investment policy, which limits the Company’sCompany's investing to only those marketable securities rated at least A-1/P-1 Short Term Rating and A-/A3 Long Term Rating, as determined by independent credit rating agencies. Risk to the Company’s investment portfolio is further mitigated by its significant weighting in U.S. government securities in order to achieve REIT asset measure requirements.
A significant portion of the Company’sCompany's customer base is comprised of businesses throughout the Americas. However, a portion of the Company’sCompany's revenues are derived from the Company’sCompany's EMEA and Asia-Pacific operations. The following table sets forth percentages of the Company’sCompany's revenues by geographic region for the years ended December 31:
2016 2015 20142018 2017 2016
Americas47% 55% 56%49% 50% 47%
EMEA32% 26% 26%31% 31% 32%
Asia-Pacific21% 19% 18%20% 19% 21%
No single customer accounted for greater than 10% of accounts receivable or revenues as of or for the years ended December 31, 2016, 20152018, 2017 and 2014.2016.
Property, Plant and Equipment
Property, plant and equipment are stated at the Company’sCompany's original cost or at fair value for acquired property, plant and equipment.equipment acquired through acquisitions, net of depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the respective assets. Leasehold improvements and integral equipment at leased locations are amortized over the shorter of the lease term or the estimated useful life of the asset or improvement. Leasehold improvements acquired in a business combinationthrough acquisition are amortized over the shorter of the useful life of the assets or a termterms that includesinclude required lease periods and renewals that are deemed to be reasonably assured at the date of acquisition. Leasehold improvements that are placed into service significantly after and not contemplated at or near the beginning of the lease term are amortized over the shorter of the useful life of the assets or a term that includes required lease periods and renewals that are deemed to be reasonably assured at the date the leasehold improvements are purchased.

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



The Company’sCompany's estimated useful lives of its property, plant and equipment are as follows:
Core systems3-25 years
Buildings12-5012-58 years
Leasehold improvements12-40 years
Construction in progressN/A
Personal Property3-10 years
The Company’sCompany's construction in progress includes direct and indirect expenditures for the construction and expansion of IBX data centers and is stated at original cost. The Company has contracted out substantially all of the construction and expansion efforts of its IBX data centers to independent contractors under construction contracts. Construction in progress includes costs incurred under construction contracts including project management services, engineering and schematic design services, design

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



development, construction services and other construction-related fees and services. In addition, the Company has capitalized interest costs during the construction phase. Once an IBX data center or expansion project becomes operational, these capitalized costs are allocated to certain property, plant and equipment categories and are depreciated over the estimated useful life of the underlying assets.
The Company reviews its property, plant and equipment for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable such as a significant decrease in market price of an asset, a significant adverse change in the extent or manner in which an asset is being used or in its physical condition, a significant adverse change in legal factors or business climate that could affect the value of an asset or a continuous deterioration of the Company's financial condition. Recoverability of assets to be held and used is assessed by comparing the carrying amount of an asset to estimated undiscounted future net cash flows expected to be generated by the asset. If the carrying amount of the asset exceeds its estimated discounted future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset. The Company did not record any impairment charges related to its property, plant and equipment during the years ended December 31, 2018 and 2017. However, the Company recorded an impairment charge of $7.7 million relating to assets held for sale for the year ended December 31, 2016 as described below.
The Company enters into non-cancellable lease arrangements as the lessee primarily for its data center spaces, office spaces and equipment. Assets acquired through capital leases and other financing obligations are included in property, plant and equipment, net on the consolidated balance sheets. In addition, a portion of the Company's property, plant and equipment are used for revenue arrangements which are accounted for as operating leases where the Company is the lessor.
Assets Held for Sale and Discontinued Operations
Assets and liabilities to be disposed of that meet all of the criteria to be classified as held for sale as set forth in the accounting standard for impairment or disposal of long-lived assets are reported at the lower of their carrying amounts or fair values less costs to sell. Assets are not depreciated or amortized while they are classified as held for sale. A component of a reporting entity or a group of components of a reporting entity that are disposed or meet the criteria to be classified as held for sale should be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results. The accounting guidance requires a business activity that, on acquisition, meets the criteria to be classified as held for sale be reported as a discontinued operation. For further information on the Company's assets held for sale and discontinued operations, see Notes 5 and 6.
Asset Retirement Costs and Asset Retirement Obligations
The fair value of a liability for an asset retirement obligation is recognized in the period in which it is incurred. The associated retirement costs are capitalized and included as part of the carrying value of the long-lived asset and amortized over the useful life of the asset. Subsequent to the initial measurement, the Company accretes the liability in relation to the asset retirement obligations over time and the accretion expense is recorded as a cost of revenue. The Company’sCompany's asset retirement obligations are primarily related to its IBX data centers, of which the majority are leased under long-term arrangements, and, in certain cases, are required to be returned to the landlords in their original condition. The majority of the Company’sCompany's IBX data center leases have been subject to significant development by the Company in order to convert them from, in most cases, vacant buildings or warehouses into IBX data centers. The majority of the Company’sCompany's IBX data centers’centers' initial lease terms expire at various dates ranging from 20172019 to 2065 and most of them enable the Company to extend the lease terms.

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Goodwill and Other Intangible Assets
The Company has three reportable segments comprised of the 1) Americas, 2) EMEA and 3) Asia-Pacific geographic regions, which the Company also determined are its reporting units. Goodwill is not amortized and is tested for impairment at least annually. As of December 31, 2016,2018, the Company had goodwill attributable to its Americas, EMEA and Asia-Pacific reporting units.
The Company has the option to assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If, after assessing the qualitative factors, the Company determines that it is not more likely than not that the fair value of a reporting unit is less than its carrying value, then performing the two-stepquantitative impairment test is unnecessary. However, if the Company concludes otherwise, then it is required to perform the first step of the two-stepquantitative goodwill impairment test. The first step, identifying a potentialquantitative impairment test, which is used to identify both the existence of impairment and the amount of impairment loss, compares the fair value of a reporting unit with its carrying amount, including goodwill. If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. If the carrying value of the reporting unit exceeds its fair value, the second step would need to be conducted; otherwise, no further steps are necessary as no potential impairment exists. The second step, measuring the impairment loss, compares the implied fair value of the reporting unit goodwill with the carrying amount of that goodwill. Anyany excess of the reporting unit goodwill carrying value over the respective implied fair value is recognized as an impairment loss.
In 2016,The Company assesses qualitative and quantitative factors to determine whether it is more likely than not that the Company elected to bypass the qualitative assessment and performed the first stepfair value of the two-step goodwill impairment test for its Americas, EMEA and Asia-Pacific reporting units duringis less than its carrying value. Qualitative factors considered in the quarter ended December 31, 2016.assessment include industry and market conditions, overall financial performance, and other relevant events and factors affecting the reporting unit. Additionally, as part of this analysis, the Company may perform a quantitative analysis to support the qualitative factors by evaluating sensitivities to assumptions and inputs used in measuring a reporting unit's fair value. In order to determine the fair value of each reporting unit, the Company utilizes the discounted cash flow and market methods. The assumptions supporting the discounted cash flow method was determined using the Company’sCompany's best estimates as of the date of the impairment review. 
As of OctoberDecember 31, 2018, 2017 and 2016, the Company concluded that it was more likely than not that goodwill attributed to the Company’sCompany's Americas, EMEA and Asia-Pacific reporting units was not impaired as the fair value of each reporting unit exceeded the carrying value of its respective reporting unit, including goodwill. In addition, the Company concluded that no events occurred or circumstances changed subsequent to October 31, 2016 through December 31, 2016 that would more likely than not reduce the fair value of the Americas, EMEA and Asia-Pacific reporting units below its carrying value. In 2015, the Company assessed qualitative and quantitative factors to determine whether it was more likely than not that the fair value of its Americas reporting unit, EMEA reporting unit and Asia-Pacific reporting unit was less than its carrying value and concluded that it was more likely than not that goodwill was not impaired.
Impairment assessments inherently involve judgment as to assumptions about expected future cash flows and the impact of market conditions on those assumptions. Future events and changing market conditions may impact the Company’sCompany's assumptions as to prices, costs, growth rates or other factors that may result in changes in the Company’sCompany's estimates of future cash flows. Although the Company believes the assumptions it used in its evaluation of impairment are reasonable, significant changes in any one of the Company’sCompany's assumptions could produce a significantly different result. Indicators of potential impairment that might lead the Company to perform interim goodwill impairment assessments include significant and unforeseen customer losses, a significant adverse change in legal factors or in the business climate, a significant adverse action or assessment by a regulator, a significant stock price decline or unanticipated competition.
All of the Company's intangible assets are subject to amortization and are amortized using the straight-line method over their estimated period of benefit. The Company performs a review of other intangible assets for impairment by assessing events or changes in circumstances that indicate the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is assessed by comparing the carrying amount of an asset to estimated undiscounted future net cash flows expected to be generated by the asset. If the carrying amount of the asset exceeds its estimated discounted future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset. The Company did not record any impairment charges related to its other intangible assets during the years ended December 31, 2018, 2017 and 2016.
For further information on goodwill and other intangible assets, see Note 63 and Note 7 below.

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Debt Issuance Costs
Loan fees and costs are capitalized and are amortized over the life of the related loans based on the effective interest method. Such amortization is included as a component of interest expense. Debt issuance costs related to outstanding debt are presented as a reduction of the carrying amount of the debt liabilityobligation and debt issuance costs related to the revolving credit facility are presented as other assets. Debt issuance costs related to the unsecured bridge facility and undrawn Term B-2 Loan are presented as other current assets.

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Derivatives and Hedging Activities
The Company recognizes all derivatives on the Company's consolidated balance sheetsheets at fair value. The accounting for changes in the value of a derivative depends on whether or not the contract is for trading purposes or has been designated and qualifies for hedge accounting. In order to qualify for hedge accounting, a derivative must be considered highly effective at reducing the risk associated with the exposure being hedged. In order for a derivative to be designated as a hedge, there must be documentation of the risk management objective and strategy, including identification of the hedging instrument, the hedged item and the risk exposure, and how effectiveness is to be assessed prospectively and retrospectively. Foreign currency gains or losses associated with derivatives that do not qualify for hedge accounting are recorded within other income (expense) in the Company’s consolidated statements of operations, with the exception of foreign currency embedded derivatives contained in certain of the Company’s customer contracts (see “Revenue Recognition” below), which are recorded within revenues in the Company’s consolidated statements of operations.
To assess effectiveness of derivatives that qualify for hedge accounting, the Company uses a regression analysis. The extent to which a hedging instrument has been and is expected to continue to be effective at achieving offsetting changes in cash flows is assessed and documented at least quarterly. Any ineffectiveness is reported in current-period earnings. If it is determined that a derivative is not highly effective at hedging the designated exposure, hedge accounting is discontinued. For qualifying cash flow hedges, the effective portion of the change in the fair value of the derivative is recorded in other comprehensive income (loss) and recognized in the consolidated statements of operations when the hedged cash flows affect earnings.earnings in the same statement of operations line item as the hedged item. The ineffective portion of cash flow hedges is immediately recognized in earnings. If it is determined that a derivative is not highly effective at hedging the designated exposure, hedge accounting is discontinued. If the hedge relationship is terminated, then the change in fair value of the derivative recorded in other comprehensive income (loss) is recognized in earnings when the cash flows that were hedged occur, consistent with the original hedge strategy. For hedge relationships discontinued because the forecasted transaction is not expected to occur according to the original strategy, any related derivative amounts recorded in other comprehensive income (loss) are immediately recognized in earnings.
Foreign currency gains or losses associated with derivatives that do not qualify for hedge accounting are recorded within other income (expense) in the Company's consolidated statements of operations, with the exception of foreign currency embedded derivatives contained in certain of the Company's customer contracts (see "Revenue Recognition" below), which are recorded within revenues in the Company's consolidated statements of operations. The Company does not use derivatives for speculative or trading purposes.
For further information on derivatives and hedging activities, see Note 78 below.
Fair Value of Financial Instruments
The carrying value of the Company’sCompany's cash and cash equivalents, short-term andinvestments, long-term investments and derivative instruments represent their fair value, while the Company’sCompany's accounts receivable, accounts payable and accrued expenses and accrued property, plant and equipment approximate their fair value due primarily to the short-term maturity of the related instruments. The fair value of the Company’sCompany's debt, which is traded in the public debt market, is based on quoted market prices. The fair value of the Company’sCompany's debt, which is not publicly traded, is estimated by considering the Company’sCompany's credit rating, current rates available to the Company for debt of the same remaining maturities and terms of the debt.
Fair Value Measurements
The Company measures and reports certain financial assets and liabilities at fair value on a recurring basis, including its investments in money market funds, and available-for-sale debt investments in other public companies, governmental units and other agencies,certificates of deposit, publicly traded equity securities and derivatives.
The Company also follows the accounting standard for the measurement of fair value for non-financial assets and liabilities on a nonrecurring basis. These include:
Non-financial assets and non-financial liabilities initially measured at fair value in a business combination or other new basis event, but not measured at fair value in subsequent reporting periods;
Reporting units and non-financial assets and non-financial liabilities measured at fair value for goodwill impairment tests;
Indefinite-lived intangible assets measured at fair value for impairment assessments;
Non-financial long-lived assets or asset groups measured at fair value for impairment assessments or disposal; and
Asset retirement obligations initially measured at fair value but not subsequently measured at fair value.
For further information on fair value measurements, see Note 9 below.

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Asset retirement obligations initially measured at fair value but not subsequently measured at fair value; andRevenue
Non-financial liabilities associated with exit or disposal activities initially measured at fair value but not subsequently measured at fair value.
For further information on fair value measurements, see Note 8 below.
Impairment of Long-Lived Assets
The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable such as a significant decrease in market price of a long-lived asset, a significant adverse change in legal factors or business climate that could affect the value of a long-lived asset or a continuous deterioration of the Company’s financial condition. Recoverability of assets to be held and used is assessed by comparing the carrying amount of an asset to estimated undiscounted future net cash flows expected to be generated by the asset. If the carrying amount of the asset exceeds its estimated discounted future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset.
The Company did not record any impairment charges related to its long-lived assets during the years ended December 31, 2016, 2015 and 2014. The Company recorded an impairment charges of $7,698,000 relating to assets held for sale for the year ended December 31, 2016, see Note 4 below.
Revenue Recognition
Equinix derives more than 90% of its revenues from recurring revenue streams, consisting primarily of (1) colocation, which includes the licensing of cabinet space and power; (2) interconnection offerings, such as cross connects and Equinix Exchange ports; (3) managed infrastructure servicessolutions and (4) other revenues consisting of rental income from tenants or subtenants. The remainder of the Company’sCompany's revenues are from non-recurring revenue streams, such as installation revenues, professional services, contract settlements and equipment sales. Revenues by service lines and geographic areas are included in segment information (see Note 17). The majority of the Company's revenue contracts are classified as licenses and accounted for in accordance with Topic 606, with the exception of certain contracts that contain lease components and are accounted for in accordance with Topic 840, Leases.
Under the revenue accounting guidance, revenues are recognized when control of these products and services is transferred to its customers, in an amount that reflects the consideration it expects to be entitled to in exchange for the products and services. Revenues from recurring revenue streams are generally billed monthly and recognized ratably over the term of the contract, generally one to three years for IBX data center colocation customers. Non-recurring installation fees, although generally paid in a lump sumupfront upon installation, are deferred and recognized ratably over the period the customer is expected to benefit from the installation.contract term. Professional service fees and equipment sales are recognized in the period in whichwhen the services were provided and representprovided. For the culminationcontracts with customers that contain multiple performance obligations, the Company accounts for individual performance obligations separately if they are distinct or as a series of a separate earnings process as long as theydistinct obligations if the individual performance obligations meet the criteriaseries criteria. Determining whether products and services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. The transaction price is allocated to the separate recognition underperformance obligation on a relative standalone selling price basis. The standalone selling price is determined based on overall pricing objectives, taking into consideration market conditions, geographic locations and other factors. Other judgments include determining if any variable consideration should be included in the accounting standard related to revenue arrangements with multiple deliverables. total contract value of the arrangement such as price increases.
Revenue from bandwidth and equipment sales is generally recognized on a gross basis in accordance with the accounting standard related to reporting revenue on a gross basis as a principal versus on a net basis as an agent, primarily becauseas the Company acts asis primarily responsible for fulfilling the principal in the transaction, takes title to products and services andcontract, bears inventory risk and credit risk.has discretion in establishing the price when selling to the customer. To the extent the Company does not meet the criteria for recognizing bandwidth and equipment services asrevenue on a gross revenue,basis, the Company records the revenue on a net basis. Revenue from contract settlements, when a customer wishes to terminate their contract early, is generallytreated as a contract modification and recognized on a cash basis, when noratably over the remaining performance obligations exist, toterm of the extent that the revenue has not previously been recognized.contract, if any.
The Company guarantees certain service levels, such as uptime, as outlined in individual customer contracts. To the extent thatIf these service levels are not achieved due to any failure of the physical infrastructure or offerings, or in the event of certain instances of damage to customer infrastructure within the Company's IBX data centers, the Company reduceswould reduce revenue for any credits or cash payments given to the customer as a result. The Company generally has the ability to determine such service level credits prior to the associated revenue being recognized, and historically,customer. Historically, these credits and cash payments have generally not been significant. There were no significant service level credits issued during
Occasionally, the years ended December 31, 2016, 2015Company enters into contracts with customers for data center and 2014.
Revenue isoffice spaces, which contain lease components. The Company's leases with customers are generally classified as operating leases and lease payments are recognized only when the service has been provided and when there is persuasive evidence of an arrangement, the fee is fixed or determinable and collection of the receivable is reasonably assured. It is the Company’s customary business practice to obtain a signed master sales agreement and sales order prior to recognizing revenue in an arrangement. Taxes collected from customers and remitted to governmental authorities are reported on a netstraight-line basis andover the lease term.  Lease revenues related to data center spaces are excluded from revenue.included within the "Colocation" revenues, while lease revenues related to office space are included within the "Other" revenues.
As a result of certain customer agreements being priced in currencies different from the functional currencies of the parties involved, under applicable accounting rules, the Company is deemed to have foreign currency forward contracts embedded in these contracts. The Company refersassessed these embedded contracts and concluded them to these asbe foreign currency embedded derivatives (see Note 7)8). These instruments are separated from their host contracts and held on the Company’sCompany's consolidated balance sheet at their fair value. The majority of these foreign currency embedded derivatives arise in certain of the Company’sCompany's subsidiaries where the local currency is the subsidiary’ssubsidiary's functional currency and the customer contract is denominated in the U.S. dollar. Changes in their fair values are recognized within revenues in the Company’sCompany's consolidated statements of operations.

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Contract Balances
The timing of revenue recognition, billings and cash collections result in accounts receivables, contract assets and deferred revenues. A receivable is recorded at the invoice amount, net of an allowance for doubtful account and is recognized in the period when the Company has transferred products or provided services to its customers and when its right to consideration is unconditional. Payment terms and conditions vary by contract type, although terms generally include a requirement of payment within 30 to 45 days. In instances where the timing of revenue recognition differs from the timing of invoicing, the Company has determined that the Company's contracts generally do not include a significant financing component. The Company assesses collectability based on a number of factors, including past transaction history with the customer and the credit-worthiness of the customer. The Company generally does not request collateral from its customers although in certain cases the Company obtains a security interest in a customer’scustomer's equipment placed in its IBX data centers or obtains a deposit. If the Company determines that collection of a fee is not reasonably assured, the fee is deferred and revenue is recognized at the time collection becomes reasonably assured, which is generally upon receipt of cash. In addition, theThe Company also maintains an allowance for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments for which the Company had expected to collect the revenues. If the financial condition of the Company’sCompany's customers were to deteriorate or if they became insolvent, resulting in an impairment of their ability to make payments, greater allowances for doubtful accounts may be required. Management specifically analyzes accounts receivable and current economic news and trends, historical bad debts, customer concentrations, customer credit-worthiness and changes in customer payment terms when evaluating revenue recognition and the adequacy of the Company’sCompany's reserves. Any amounts that were previously recognized as revenue and subsequently determined to be uncollectibleuncollectable are charged to bad debt expense included in generalsales and administrativemarketing expense in the consolidated statements of operations. A specific bad debt reserve of up to the full amount of a particular invoice value is provided for certain problematic customer balances. An additional reserve is established for all other accounts based on the age of the invoices and an analysis of historical credits issued. Delinquent account balances are written-offwritten off after management has determined that the likelihood of collection is not probable.
A contract asset exists when the Company has transferred products or provided services to its customers, but customer payment is contingent upon satisfaction of additional performance obligations. Certain contracts include terms related to price arrangements such as price increases and free months. The Company recognizes revenues ratably over the contract term, which could potentially give rise to contract assets during certain periods of the contract term. Contract assets are recorded in other current assets and other assets in the consolidated balance sheet.
Deferred revenue (a contract liability) is recognized when the Company has an unconditional right to a payment before it transfers products or services to customers. Deferred revenue is included in other current liabilities and other liabilities, respectively, in the consolidated balance sheet.
Contract Costs
Direct and indirect incremental costs solely related to obtaining revenue contracts are capitalized as costs of obtaining a contract, when they are incremental and if they are expected to be recovered. Such costs consist primarily of commission fees and sales bonuses, as well as indirect related payroll costs. Contract costs are amortized over the estimated period of benefit on a straight-line basis. The Company elected to apply the practical expedient which allows the Company to expense contract costs when incurred, if the amortization period is one year or less.
For further information on revenue recognition, see Note 2 below.
Income Taxes
Income taxes are accounted for under the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are established when necessary to reduce deferred tax assets to the amounts that are expected more likely than not to be realized in the future. A tax benefit from an uncertain income tax position may be recognized in the financial statements only if it is more likely than not that the position is sustainable, based solely on its technical merits and consideration of the relevant taxing authority’sauthority's widely understood administrative practices and precedents.
The Company began operatingelected to be taxed as a REIT for federal income tax purposes effective January 1,beginning with its 2015 and thereafter received a favorable private letter ruling (“PLR”) from the U.S. Internal Revenue Service (“IRS”) that validated the Company's position with respect to specified REIT compliance matters.taxable year. As a result, the Company may deduct the distributions made to its stockholders from taxable income generated by the Company's QualifiedCompany and its qualified REIT Subsidiaries (“QRSs”subsidiaries ("QRSs"). The Company’sCompany's dividends paid deduction generally eliminates the U.S. taxable income of the Company'sCompany

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and its QRSs, resulting in no U.S. income tax due. However, the Company's Taxabletaxable REIT Subsidiaries (“TRSs”subsidiaries ("TRSs") will continue to be subject to income taxes on any taxable income generated by them. In addition, the foreign operations of the Company will continue to be subject to local income taxes regardless of whether the foreign operations are operated as a QRSQRSs or TRS.TRSs.
The Company's qualification and taxation as a REIT depends on its satisfaction of certain asset, income, organizational, distribution, stockholder ownership and other requirements on a continuing basis. The Company's ability to satisfy quarterly asset tests depends upon its analysis and the fair market values of its REIT and non-REIT assets. For purposes of the quarterly REIT asset tests, the Company recognizes interestestimates the fair market value of assets within its QRSs and penalties relatedTRSs using a discounted cash flow approach, by calculating the present value of forecasted future cash flows. The Company applies discount rates based on industry benchmarks relative to unrecognized tax benefits within income tax benefit (expense)the market and forecasting risks. Other key assumptions used to estimate the fair market value of assets in the consolidated statements of operations.QRSs and TRSs include projected revenue growth, operating margins, and forecasted capital expenditures. The Company revisits key assumptions periodically to reflect any changes due to business or economic environment.
Stock-Based Compensation
Stock-based compensation cost is measured at the grant date for all stock-based awards made to employees and directors based on the fair value of the award and is recognized as expense over the requisite service period, which is generally the vesting period.
The Company grants restricted stock units to its employees and these equity awards generally have only a service condition. The Company grants restricted stock units to its executives and these awards generally have a service and performance condition or a service and market condition. To date, any performance conditions contained in an equity award are tied to the financial performance of the Company or a specific region of the Company. The Company assesses the probability of meeting these performance conditions on a quarterly basis. The majority of the Company’sCompany's equity awards vest over four years, although certain of the equity awards for executives vest over a range of two to four years. The valuation of restricted stock units with only a service condition or a service and performance condition requires no significant assumptions as the fair value for these types of equity awards is based solely on the fair value of the Company’sCompany's stock price on the date of grant. The Company uses a Monte Carlo simulation option-pricing model to determine the fair value of restricted stock units with a service and market condition.

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The Company uses the Black-Scholes option-pricing model to determine the fair value of its employee stock purchase plan. The determination of the fair value of shares purchased under the employee stock purchase plan is affected by assumptions regarding a number of complex and subjective variables including the Company’sCompany's expected stock price volatility over the term of the awards and actual and projected employee stock purchase behaviors. The Company estimated the expected volatility by using the average historical volatility of its common stock that it believed was best representative of future volatility. The risk-free interest rate used was based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term of the equity awards. The expected dividend rate used in 2015 and thereafter was based on average dividend yields and the expected dividend rate used prior to 2015 was zero as the Company did not anticipate paying dividends. The expected term used was equal to the term of each purchase window.
The accounting standard for stock-based compensation does not allow the recognition of unrealized tax benefits associated with the tax deductions in excess of the compensation recorded (excess tax benefit) until the excess tax benefit is realized (i.e., reduces taxes payable). TheIn periods prior to 2017, the Company recognizesrecognized the benefit from stock-based compensation in equity when the excess tax benefit is realized by following the “with-and-without”"with-and-without" approach. Upon adoption of ASU No. 2016-09, Compensation - Stock Compensation (Topic 718) on January 1, 2017, the Company records the excess tax benefits from stock-based compensation as income tax expense through the statement of operations instead of additional paid-in capital as required under the previous guidance.
For further information on stock-based compensation, see Note 13 below.
Foreign Currency Translation
The financial position of foreign subsidiaries is translated using the exchange rates in effect at the end of the period, while income and expense items are translated at average rates of exchange during the period. Gains or losses from translation of foreign operations where the local currency is the functional currency are included as other comprehensive income (loss). The net gains and losses resulting from foreign currency transactions are recorded in net income (loss) in the period incurred and reportedrecorded within other income and expense.(expense). Certain inter-company balances are designated as long-term.loans of a long-term investment-type nature. Accordingly, exchange gains and losses associated with these long-term inter-company balances are recorded as a component of other comprehensive income (loss), along with translation adjustments.

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Earnings Per Share
The Company computes basic and diluted EPS for net income (loss) attributable to the Company.income. Basic EPS is computed using net income (loss) attributable to the Company and the weighted-average number of common shares outstanding. Diluted EPS is computed using net income, attributable to the Company, adjusted for interest expense as a result of the assumed conversion of the Company’s 3.00% Convertible Subordinated Notes andCompany's 4.75% Convertible Subordinated Notes, if dilutive, and the weighted-average number of common shares outstanding plus any dilutive potential common shares outstanding. Dilutive potential common shares include the assumed exercise, vesting and issuance activity of employee equity awards using the treasury stock method, as well as shares issuable upon the assumed conversion of the 3.00% Convertible Subordinated Notes and 4.75% Convertible Subordinated Notes. See Note 3 below.
Redeemable Non-Controlling Interests
Non-controlling interests in subsidiaries that are redeemable for cash or other assets outside of the Company’s control are classified as mezzanine equity, outside of equity and liabilities, and are adjusted to fair value on each balance sheet date. The resulting changes in fair value of the estimated redemption amount, increases or decreases, are recorded with corresponding adjustments against retained earnings or, in the absence of retained earnings, additional paid-in-capital
For further information on redeemable non-controlling interests, see Note 114 below.
Treasury Stock
The Company accounts for treasury stock under the cost method. When treasury stock is re-issued at a higher price than its cost, the difference is recorded as a component of additional paid-in capital to the extent that there are gains to offset the losses. If there are no treasury stock gains in additional paid-in capital, the losses are recorded as a component of retained earnings (accumulated deficit).

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earnings.
Recent Accounting Pronouncements
Accounting Standards Not Yet Adopted
In JanuaryAugust 2017, Financial Accounting Standards Board ("FASB") has issued Accounting Standards Update ("ASU") No. 2017-04 Intangibles - Goodwill2017-12 Derivatives and OtherHedging (Topic 350)815): Simplifying the TestTargeted Improvements to Accounting for Goodwill Impairment.Hedging Activities. This ASU iswas issued to improve the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements and to simplify the subsequentapplication of the hedge accounting guidance in current GAAP. This ASU permits hedge accounting for risk components involving nonfinancial risk and interest rate risk, requires an entity to present the earnings effect of the hedging instrument in the same income statement line item in which the hedged item is reported, no longer requires separate measurement and reporting of goodwill. The ASU eliminates step 2 fromhedge ineffectiveness, eases the goodwill impairment test and the requirementsrequirement for any reporting unit with a zero or negative carrying amount to perform a qualitativehedge effectiveness assessment, and if it fails that qualitative test,requires a tabular disclosure related to perform step 2the effect on the income statement of the goodwill impairment test. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. This ASU should be applied on a prospective basis.fair value and cash flow hedges. This ASU is effective for public business entities for its annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company currently does not expect to early adopt this ASU.
In January 2017, FASB has issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business, clarifying the definition of a business. The ASU affects all companies and other reporting organizations that must determine whether they have acquired or sold a business. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill, and consolidation. The ASU is effective for annual periods beginning after December 15, 2017, including interim periods within those periods. The Company is currently evaluating the impact that the adoption of this standard will have on its consolidated financial statements.
In December 2016, FASB has issued ASU No. 2016-19, Technical Corrections and Improvements. This ASU covers a wide range of Topics in the Accounting Standards Codification. This ASU is effective for public business entities for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years with early adoption is permitted. The Company does not expect this ASU to impact its consolidated financial statements.
In November 2016, FASB has issued ASU No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. This ASU applies to all entities that have restricted cash or restricted cash equivalents and are required to present a statement of cash flows. The ASU requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. As a result, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This ASU is effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years with early adoption is permitted. This ASU should be applied using a retrospective transition method to each period presented. The Company is currently evaluating the impact that the adoption of this standard will have on its consolidated financial statements. Adoption of this standard eliminates the effect of changes in restricted cash from investing activities in the presentation of the Consolidated Statement of Cash Flows and does not affect the Consolidated Statements of Operations or Consolidated Balance Sheets.
In October 2016, FASB has issued ASU No. 2016-17, Consolidation (Topic 810): Interests Held through Related Parties That Are under Common Control. This ASU alters how a decision maker needs to consider indirect interests in a variable interest entity ("VIE") held through an entity under common control. Under this ASU, if a decision maker is required to evaluate whether it is the primary beneficiary of a VIE, it will need to consider only its proportionate indirect interest in the VIE held through a common control party. This ASU is effective for public business entities for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years,2018 with early adoption permitted. TheOn January 1, 2019, the Company does not expect this ASU to impact its consolidated financial statements as it does not hold any interests in a VIE through related parties that are under common control.
In October 2016, FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. This ASU requires the recognition of the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. This ASU is effective for fiscal years and interim period within those fiscal years, beginning after December 15, 2017, with early adoption permitted. The Company is currently evaluating the impact that the adoption ofadopted this standard will have onand is finalizing its consolidated financial statements but does not expect to early adopt this ASU.
In August 2016, FASB issued ASU 2016-15, Statementevaluation of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU provides guidance on the classification of eight cash flow issues to reduce the existing diversification in practice, including (a) debt prepayment or debt extinguishment costs; (b) settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; (c) contingent consideration payments made after a business combination; (d) proceeds from settlement of insurance claims; (e)

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies; (f) distributions received from equity method investees; (g) beneficial interests in securitization transactions; and (h) separately identifiable cash flows and application of the predominance principle. The ASU is effective for fiscal years and interim period within those fiscal years, beginning after December 15, 2017, with early adoption permitted. The Company is currently evaluating the impact that the adoption of this standard will have on its consolidated financial statements.
In June 2016, FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The ASU requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. The ASU requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’sorganization's portfolio. These disclosures include qualitative and quantitative requirements that provide additional information about the amounts recorded in the financial statements. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The ASU is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019, with early adoption permitted for all organizations for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company will adopt this new ASU on January 1, 2019. The Company expects this ASU to impact its accounting for allowances for doubtful accounts receivable and is currently evaluating the extent of the impact that the adoption of this ASU will have on its consolidated financial statements.
In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"). This ASU simplifies several areas of the accounting for share-based payment award transactions, including (a) income tax consequences; (b) classification of awards as either equity or liabilities; and (c) classification on the statement of cash flows. This ASU is effective for fiscal years beginning after December 15, 2016, and interim periods within those annual periods, with early adoption permitted. The Company is currently evaluating the impact that the adoption of this standard will have on its consolidated financial statements.
In March 2016, the FASB issued ASU 2016-06, Derivativesstatements, including its accounting policies, processes and Hedging (Topic 815), Contingent Put and Call Options in Debt Instruments ("ASU 2016-06"). This ASU clarifies the requirements for assessing whether contingent call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. An entity performing the assessment under the amendments in this ASU is required to assess the embedded call (put) options solely in accordance with the four-step decision sequence. This guidance should be applied on a modified retrospective basis to existing debt instruments as of the beginning of the fiscal year in which the amendments are effective, and is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Some of the Company’s debt instruments contain contingent options that can accelerate the payment of principal. The Company does not expect that its embedded derivative conclusions will change on adoption of this ASU. The Company will complete its assessment on the impact that the adoption of this ASU will have on its consolidated financial statements by the effective date.
In March 2016, the FASB issued ASU 2016-05, Derivatives and Hedging (Topic 815), Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships ("ASU 2016-05"). This ASU clarifies that a change in the counterparty to a derivative instrument that has been designated as a hedging instrument under Topic 815 does not, in and of itself, require dedesignation of that hedging relationship provided that all other hedge accounting criteria continue to be met. This ASU may be applied prospectively or using a modified retrospective approach, and is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The Company will adopt this ASU prospectively in the first quarter of 2017 and does not expect that adoption of this standard to impact its consolidated financial statements.systems.
In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) ("ASU 2016-02"). The and issued subsequent amendments to the initial guidance. Under the new guidance, requires lessees will be required to recognize the following for all leases with terms(with the exception of more than 12 months:short-term leases) at the commencement date: (1) a lease liability, which is a lessee‘slessee's future obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use ("ROU") asset, which is an asset that represents the lessee’slessee's right to use, or control the use of, a specified asset for the lease term. UnderThe accounting applied by a lessor is substantially unchanged under Topic 842. The standard allows entities to adopt with one of two methods: the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers. The new lease guidance simplified the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at,method or entered into after, the beginning of the earliest comparative period presented in the financial statements.alternative transition method. The modified retrospective approach includes a number of optional practical expedients that we may elect to apply. ASU 2016-02standard is effective for public companies for fiscal yearsinterim and annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. WhileOn January 1, 2019, the Company is currently evaluatingadopted Topic 842 using the impact thatalternative transition method.
The Company elected the adoptionpackage of this standard will have on its consolidated financial statements,practical expedients which allows the Company believes this standard will havenot to reassess (1) whether any expired or existing contracts contain leases under the new definition of a significant impact on its consolidated financial statements due, in part, tolease; (2) the substantial amount of operating leases it has.lease classification for any expired or existing leases; and (3) whether previously capitalized initial direct costs would qualify for capitalization under ASC 842. The Company also

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In January 2016,elected the FASB issued ASU 2016-01, Financial Instruments- Overall (Subtopic 825-10) ("ASU 2016-01"),land easements practical expedient which requires all equity investmentspermits the Company not to be measuredassess at fair value with changes in the fair value recognized through net income other than thosetransition whether any expired or existing land easements are or contain leases if they were not previously accounted for as leases under equity method of accounting or those that result in consolidation ofTopic 840.
Upon the investees). The ASU also requires that an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. In addition the ASU eliminates the requirement to disclose the fair value of financial instruments measured at amortized cost for entities that are not public business entities and the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet for public business entities. ASU 2016-01 is effective for public companies for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company currently holds publicly traded equity securities that are classified as “available-for-sale” and are carried at fair value with unrealized gains and losses reported in stockholders’ equity as a component of other comprehensive income (loss). On adoption of this ASU, the unrealized gains and losses will be recognized through net income. The Company has not elected to measure its financial liabilities at fair value therefore, does not expect an impact on the accounting for its financial liabilities.
In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”) Topic 606 and issued subsequent amendments to the initial guidance in August 2015, March 2016, April 2016 and May 2016 within ASU 2015-14, ASU 2016-08, ASU 2016-10, ASU 2016-12 and ASU 2016-20, respectively (ASU 2014-09, ASU 2015-14, ASU 2016-08, ASU 2016-10, ASU 2016-11, ASU 2016-12 and ASU 2016-20 collectively, Topic 606). Topic 606 will replace most existing revenue recognition guidance in U.S. GAAP. The core principle of Topic 606 is that an entity should recognize revenue for the transfer of goods or services equal to the amount that it expects to be entitled to receive for those goods or services. Topic 606 requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments.
Topic 606 allows entities to adopt with one of these two methods: full retrospective, which applies retrospectively to each prior reporting periods presented or modified retrospective, which recognizes the cumulative effect of initially applying the revenue standard as an adjustment to the opening balance of retained earnings in the period of initial application. The Company currently anticipates adopting the standard using the modified retrospective method.
Topic 606, as amended, is effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods therein (i.e., January 1, 2018, for a calendar year entity). Early application for public entities is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The Company expects to adopt the standard on January 1, 2018.
While the Company is continuing to evaluate all potential impacts of the standard, the Company believes the most significant impact relates to its accounting for installation revenue and the cost to obtain contracts. Under the new standard, the Company expects to derecognize build-to-suit assets and liabilities. Some build-to-suit leases are classified as operating leases, while some are classified as finance leases. The Company expects to recognize installation revenue overoperating lease assets and liabilities of approximately $1.3 billion to $1.6 billion, which includes the contract period rather than overderecognition of certain existing build-to-suit assets and liabilities subsequently assessed as operating leases. The Company is still finalizing its embedded lease assessment hence the estimated installation life. Underabove estimates exclude the new standard,potential impacts that might arise from the search for embedded, or previously unidentified, leases in existence as of adoption. In addition, the Company is required to capitalize and amortize certain costs to obtain contracts. Therefore, these costs to obtain contracts will not be immediately expensed, but will be capitalized and amortized overstill evaluating the estimated contract term plus estimated renewal term.impact of this standard on its financial statements as a lessor.
Accounting Standards Adopted
In September 2015,May 2014, the FASB issued ASU 2015-16, Business Combinations (“2014-09, Revenue from Contracts with Customers ("ASU 2015-16”2014-09"), and issued subsequent amendments to simplifythe initial guidance, collectively referred as "Topic 606." Topic 606 replaces most existing revenue recognition guidance in U.S. GAAP. The core principle of Topic 606 is that an entity should recognize revenue for the transfer of control of the goods or services equal to the amount that it expects to be entitled to receive for those goods or services. Topic 606 requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments.
On January 1, 2018, the Company adopted Topic 606 using the modified retrospective approach applied to those contracts, which were not completed as of January 1, 2018, and recognized a net increase to the opening retained earnings of $269.8 million, net of tax impacts. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while the comparative information has not been restated and continues to be reported under accounting standards in effect for adjustments madethose periods.
In adopting the new guidance, the Company elected to provisional amounts recognized in a business combination by eliminatingapply the requirementpractical expedient, which allows the company not to retrospectively account for those adjustments. This ASU is effective for financial statements issued for fiscal yearsrestate contracts with multiple modifications on a modification by modification basis. Instead, the Company reflected the aggregate amount of all modifications that occurred before the beginning after December 15, 2015, and interim periods within those fiscal years with early adoption permitted. The amendments in this ASU require thatof the acquirer record, inearliest period presented using the same period’s financial statements,new standard. In addition, where appropriate, the effect on earnings of changes in depreciation, amortization or other income effects as a result of changesCompany elected to provisional amounts, calculated as ifapply the accounting had been completed at the acquisition date. The Company adopted ASU 2015-16 in the three months ended March 31, 2016. Adjustments to provisional amounts for the TelecityGroup acquisition are discussed in Note 2 Acquisitions.
In May 2015, the FASB issued ASU 2015-07, Fair Value Measurement (“ASU 2015-07”), which permits a reporting entity, as a practical expedient to measureaccount for the fair valuenew standard under the portfolio approach as the Company reasonably expects that the effects of certain investments usingapplying the net asset value per share ofguidance under the investment. This ASU is effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years with early adoption permitted. A reporting entity shouldportfolio approach will not differ materially from applying the guidance to individual contracts. The Company also elected to apply the amendment retrospectively to all periods presented. The retrospective approach requires that an investment for which fair value is measured using the net asset value per share practical expedient be removedthat allows the Company not to disclose the remaining performance obligations for variable consideration that is allocated to entirely unsatisfied performance obligations or to a wholly unsatisfied distinct good or service that forms part of a single obligation.
The most significant impacts to the Company from Topic 606 relate to installation revenue and costs to obtain contracts. Under the fair value hierarchy in all periods presented in an entity’s financial statements.new standard, the Company recognizes installation revenue over the contract period rather than over the estimated installation life as under the prior revenue standard. The Company is also required to capitalize and amortize certain costs to obtain contracts, rather than expense them immediately as under the previous standard.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



The cumulative effect of the changes made to the Company's consolidated January 1, 2018 balance sheet from the adoption of Topic 606 was as follows (in thousands):
Balance Sheet Balance at December 31, 2017 Adjustments due to adoption of Topic 606 Balance at January 1, 2018
Assets      
Other current assets $232,027
 $9,002
 $241,029
Other assets (1)
 241,750
 179,578
 421,328
Liabilities      
Other current liabilities 159,914
 (16,215) 143,699
Other liabilities (2)
 661,710
 (63,051) 598,659
Equity      
Accumulated other comprehensive loss (3)
 (785,189) (1,930) (787,119)
Retained earnings $252,689
 $269,776
 $522,465
(1)
Includes cumulative adjustments related to cost to obtain contracts, non-current contract assets and deferred tax assets.
(2)
Includes cumulative adjustments related to non-current deferred revenue and deferred tax liabilities.
(3)
Includes cumulative adjustments related to CTA.
The following tables summarize the effects of adopting Topic 606 on the consolidated financial statement line items (in thousands, except per share data):
Balance Sheets December 31, 2018 Adjustments Balances without adoption of Topic 606
Accounts receivable, net $630,119
 $(2,386) $627,733
Other current assets 274,857
 (9,830) 265,027
Total current assets 1,515,682
 (12,216) 1,503,466
Other assets 533,252
 (192,306) 340,946
Total assets $20,244,638
 $(204,522) $20,040,116
Current liabilities:      
Accounts payable and accrued expenses $756,692
 $(3,203) $753,489
Other current liabilities 126,995
 17,916
 144,911
Total current liabilities 1,515,071
 14,713
 1,529,784
Other liabilities 629,763
 73,414
 703,177
Total liabilities 13,025,359
 88,127
 13,113,486
Accumulated other comprehensive loss (945,702) 7,846
 (937,856)
Retained earnings 889,948
 (300,495) 589,453
Total stockholders' equity 7,219,279
 (292,649) 6,926,630
Total liabilities and stockholders' equity $20,244,638
 $(204,522) $20,040,116

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)




Statements of Operations Year Ended December 31, 2018 Adjustments Balance without adoption of Topic 606
Revenues $5,071,654
 $(15,415) $5,056,239
Sales and marketing 633,702
 20,226
 653,928
Total costs and operating expenses 4,094,271
 20,226
 4,114,497
Income from operations 977,383
 (35,641) 941,742
Income from continuing operations before income taxes 433,038
 (35,641) 397,397
Income tax expense (67,679) 4,922
 (62,757)
Net income from continuing operations 365,359
 (30,719) 334,640
Net income $365,359
 $(30,719) $334,640
Basic EPS $4.58
 $(0.39) $4.19
Diluted EPS $4.56
 $(0.39) $4.17

Statements of Cash Flow Year Ended December 31, 2018 Adjustments Balance without adoption of Topic 606
Cash flows from operating activities:      
Net income $365,359
 $(30,719) $334,640
Adjustments to reconcile net income to net cash provided by operating activities:      
Changes in operating assets and liabilities:      
Accounts receivable (52,931) 1,413
 (51,518)
Income taxes, net (10,670) (1,863) (12,533)
Other assets (47,635) 18,048
 (29,587)
Other liabilities 31,725
 13,121
 44,846
Net cash provided by operating activities $1,815,426
 $
 $1,815,426

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



The Company also adopted ASU 2015-07the following standards during 2018, none of which had a material impact to the Company's consolidated financial statements or financial statement disclosures:
StandardsDescriptionEffective Date and Adoption Consideration
ASU 2017-09 Compensation–Stock Compensation (Topic 718)This ASU was issued primarily to provide clarity and reduce both diversity in practice and cost and complexity when applying the guidance in Topic 718 to a change to the terms or conditions of a share-based payment award. This ASU affects any entity that changes the terms or conditions of a share-based payment award. This ASU provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718.January 1, 2018
ASU 2017-07 Compensation–Retirement Benefits (Topic 715)This ASU was issued primarily to improve the presentation of net periodic pension cost and net periodic post-retirement benefit cost. This ASU requires that an employer reports the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. It also requires the other components of net periodic pension cost and net periodic post-retirement benefit cost to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. Additionally, only the service cost component is eligible for capitalization, when applicable.January 1, 2018
ASU 2017-05 Other Income—Gains and Losses from the Derecognition of Non-Financial Assets (Subtopic 610-20)This ASU is to clarify the scope of the non-financial asset guidance in Subtopic 610-20 and to add guidance for partial sales of non-financial assets. This ASU defines the term in substance non-financial asset and clarifies that non-financial assets within the scope of Subtopic 610-20 may include non-financial assets transferred within a legal entity to a counterparty. The ASU also provides guidance on the accounting for what often are referred to as partial sales of non-financial assets within the scope of Subtopic 610-20 and contributions of non-financial assets to a joint venture or other non-controlled investee.January 1, 2018
ASU 2017-04 Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.This ASU is to simplify the subsequent measurement of goodwill. The ASU eliminates step 2 from the goodwill impairment test. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary.The Company elected to early adopt this ASU on a prospective basis, effective January 1, 2018.
ASU 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a BusinessThis ASU provides new guidance to assist entities with evaluating when a set of transferred assets and activities is a business. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill and consolidation.The Company adopted this standard on a prospective basis, effective January 1, 2018. The adoption of this standard may impact the accounting of future transactions.
ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than InventoryThis ASU requires the recognition of the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs.January 1, 2018
ASU 2016-01 Financial Instruments- Overall (Subtopic 825-10)

This ASU requires all equity investments to be measured at fair value with changes in the fair value recognized through net income other than those accounted for under equity method of accounting or those that result in consolidation of the investees. The ASU also requires that an entity present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments.The Company adopted this standard using the modified retrospective method, effective January 1, 2018 and recorded a net increase to retained earnings of $2.1 million.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



2.Revenue Recognition
Contract Balances
The following table summarizes the opening and closing balances of the Company's accounts receivable, net; contract asset, current; contract asset, non-current; deferred revenue, current; and deferred revenue, non-current (in thousands):
 Accounts receivable, net Contract asset, current Contract asset, non-current Deferred revenue, current Deferred revenue, non-current
Beginning balances as of January 1, 2018 (1)
$576,313
 $9,002
 $16,186
 $71,085
 $53,101
Closing balances as of December 31, 2018630,119
 9,778
 16,396
 73,142
 46,641
Increase/(decrease)$53,806
 $776
 $210
 $2,057
 $(6,460)
(1)
Includes cumulative adjustments made to these accounts on January 1, 2018 from the adoption of Topic 606.
The difference between the opening and closing balances of the Company's accounts receivable, net, contract assets and deferred revenues primarily results from the timing difference between the satisfaction of the Company's performance obligation and the customer's payment, as well as business combinations closed during the year ended December 31, 2018. The amounts of revenue recognized during the year ended December 31, 2018 from the opening deferred revenue balance was approximately $81.8 million. For the year ended December 31, 2018, no impairment loss related to contract balances was recognized in the three monthsconsolidated statement of operations.
Contract Costs
The ending balance of net capitalized contract costs as of December 31, 2018 was $188.2 million, which was included in other assets in the consolidated balance sheet. For the year ended MarchDecember 31, 2016.2018, $73.1 million of contract costs were amortized, which were included in sales and marketing expense in the consolidated statement of operations.
Remaining performance obligations
As of December 31, 2018, approximately $5.8 billion of total revenues and deferred installation revenues are expected to be recognized in future periods, the majority of which will be recognized over the next 24 months. While initial contract terms vary in length, substantially all contracts thereafter automatically renew in one-year increments. Included in the remaining performance obligations is either 1) remaining performance obligations under the initial contract terms or 2) remaining performance obligations related to contracts in the renewal period once the initial terms have lapsed. The adoptionremaining performance obligations do not include variable consideration related to unsatisfied performance obligations such as the usage of ASU 2015-07metered power or any contracts that could be terminated without any significant penalties such as the majority of interconnection revenues. The remaining performance obligations above exclude approximately $1.2 billion total revenues to be recognized in the future related to arrangements where the Company is the lessor.
3.Acquisitions
2018 Acquisitions
On April 18, 2018, the Company acquired all of the equity interests in Metronode from the Ontario Teachers' Pension Plan Board for a cash purchase price of A$1.034 billion, or approximately $804.6 million at the exchange rate in effect on April 18, 2018. Metronode operated 10 data centers in six metro areas in Australia. The acquisition supports the Company's ongoing global expansion to meet customer demand in the Asia-Pacific region.

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



On April 2, 2018, the Company completed the acquisition of Infomart Dallas, including its operations and tenants, from ASB Real Estate Investments, for total consideration of approximately $804.0 million. The consideration was comprised of approximately $45.8 million in cash, subject to customary adjustments and $758.2 million aggregate fair value of 5.000% senior unsecured notes (see Note 11). Prior to the acquisition, a portion of the building was leased to the Company and was being used as its Dallas 1, 2, 3 and 6 data centers, which were all accounted for as build-to-suit leases. Upon acquisition, the Company effectively terminated the leases and settled the related financing obligations and other liabilities related to the leases for approximately $170.3 million and $1.9 million, respectively, and recognized a loss on debt extinguishment of $19.5 million. The acquisition of this highly interconnected facility and tenants adds to the Company's global platform and secures the ability to further expand in the Americas market in the future.
Both acquisitions constitute a business under the accounting standard for business combinations and, therefore, were accounted for as business combinations using the acquisition method of accounting. Under the acquisition method of accounting, the total purchase price is allocated to the assets acquired and liabilities assumed measured at fair value on the date of acquisition.
A summary of the allocation of total purchase consideration is presented as follows (in thousands):
 Metronode Infomart Dallas
Cash and cash equivalents$3,206
 $17,432
Accounts receivable8,318
 637
Other current assets9,894
 395
Property, plant and equipment297,092
 362,023
Intangible assets128,229
 65,847
Goodwill413,871
 197,378
Other assets (1)
44,373
 
Total assets acquired904,983
 643,712
Accounts payable and accrued liabilities(17,104) (5,056)
Other current liabilities(2,038) (2,141)
Deferred tax liabilities(35,437) 
Other liabilities (1)
(45,851) (4,723)
Net assets acquired$804,553
 $631,792
(1)
In connection with the Metronode Acquisition, the Company recorded indemnification assets of $44.4 million, which represented the seller's obligation under the purchase agreement to reimburse pre-acquisition tax liabilities settled after the acquisition.
The following table presents certain information on the acquired intangible assets (in thousands):
Intangible Assets Fair Value Estimated Useful Lives (Years) Weighted-average Estimated Useful Lives (Years)
Customer relationships (Metronode) $128,229
 20.0 20.0
Customer relationships (Infomart Dallas) 35,860
 20.0 20.0
In-place leases (Infomart Dallas) 19,960
 3.6 - 7.5 6.8
Trade names (Infomart Dallas) 9,552
 20.0 20.0
Favorable leases (Infomart Dallas) 475
 3.6 - 7.5 7.0
The fair value of customer relationships was estimated by applying an income approach, by calculating the present value of estimated future operating cash flows generated from existing customers less costs to realize the revenue. The Company applied discount rates of 7.3% for Metronode and 8.2% for Infomart Dallas, which reflected the nature of the assets as they relate to the risk and uncertainty of the estimated future operating cash flows. Other assumptions used to estimate the fair value of customer relationships included projected revenue growth, capital expenditures, probability of renewal, customer attrition rates and operating margins. The fair value of Infomart Dallas' trade name was estimated using the relief from royalty method under the income approach. The Company applied a relief from royalty rate of 1.5% and a discount rate of 8.2%. The fair value of in-place leases

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



was estimated by projecting the avoided costs, such as the cost of originating the acquired in-place leases, during a typical lease up period. The fair value measurements were based on significant inputs that are not observable in the market and thus represent Level 3 measurements as defined in the accounting standard for fair value measurements.
The fair value of property, plant and equipment was estimated by applying the cost approach, with the exception of land which was estimated by applying the market approach, for the Metronode Acquisition. For the Infomart Dallas Acquisition, the fair values of land, building and personal property were estimated by applying the market approach, residual income method and cost approach, respectively. The cost approach uses the replacement or reproduction cost as an indicator of fair value. The premise of the cost approach is that a market participant would pay no more for an asset than the amount for which the asset could be replaced or reproduced. The key assumptions of the cost approach include replacement cost new, physical deterioration, functional and economic obsolescence, economic useful life, remaining useful life, age and effective age. The residual income method estimates the fair value of the Infomart Dallas building using an income approach less the fair values attributed to land, personal property, in-place leases and favorable and unfavorable leases.
As of December 31, 2018, the Company had not completed the detailed valuation analysis of Metronode or Infomart Dallas to derive the fair value of various items including, but not limited to: property, plant and equipment, intangible assets and related tax impacts; therefore, the allocation of the purchase price to assets acquired and liabilities assumed is based on provisional estimates and is subject to continuing management analysis. As of December 31, 2018, the Company updated the preliminary allocation of purchase price for Metronode and Infomart Dallas from the provisional amounts reported as of June 30, 2018. The adjustments made primarily resulted in a decrease in property, plant and equipment, other assets, other liabilities and deferred tax assets of $10.1 million, $10.0 million, $9.7 million and $4.1 million, respectively, and an increase in goodwill, deferred tax liabilities and intangible assets of $45.3 million, $35.4 million and $4.8 million, respectively, for the Metronode Acquisition. The adjustments for the Infomart Dallas Acquisition primarily resulted in a decrease in goodwill of $6.2 million and an increase in intangible assets of $4.6 million. The changes in fair value of acquired assets and liabilities assumed did not have a significant impact on the Company's consolidated financial statements.results of operations for any reporting periods prior to December 31, 2018. The Company may further adjust these amounts as valuations are finalized and the Company obtains information necessary to complete the analyses, but no later than one year from the acquisition date.
In February 2015,Goodwill represents the FASB issued ASU 2015-02, Consolidations (“ASU 2015-02”). This ASU requires companies to adopt a new consolidation model, specifically: (1) the ASU modifies the evaluation of whether limited partnerships and similar legal entities are VIEs or voting interest entities; (2) the ASU eliminates the presumption that a general partner should consolidate limited partnership; (3) the ASU affects the consolidation analysis of reporting entities that involved with VIEs and (4) the ASU provides a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar Rule 2a-7excess of the Investment Company Actpurchase price over the fair value of 1940the net tangible and intangible assets acquired and liabilities assumed. Goodwill is attributable to the workforce of the acquired business and the projected revenue increase expected to arise from future customers after the Metronode and Infomart Dallas acquisitions. Goodwill from the acquisition of Metronode is not amortizable for registered money market funds. This ASUlocal tax purposes and is effectiveattributable to the Company's Asia-Pacific region. Goodwill from the acquisition of Infomart Dallas is expected to be deductible for fiscal years,local tax purposes and for interim periods within those fiscal years, beginning after December 15, 2015, with early adoption permitted. is attributable to the Company's Americas region. Operating results of Metronode and Infomart Dallas have been reported in the Asia-Pacific and Americas regions, respectively.
The Company adopted ASU 2015-02 inincurred acquisition costs of approximately $31.1 million during the three monthsyear ended MarchDecember 31, 2016.2018 for both acquisitions. The adoptionCompany's results of ASU 2015-02 did not have a significant impact on the Company's consolidated financial statements.
In January 2015, the FASB issued ASU 2015-01, Income Statement – Extraordinaryoperations include $78.7 million of revenues and Unusual Items (“ASU 2015-01”), to simplify thean insignificant amount of net income statement presentation requirements by eliminating the concept of extraordinary items. ASU 2015-01 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015, with early adoption permitted provided that the guidance is appliedfrom operations from the beginningcombined operations of Metronode and Infomart Dallas during the fiscal year of adoption. The Company adopted ASU 2015-01 in the three months ended MarchDecember 31, 2016. The adoption of ASU 2015-01 did not have a significant impact on the Company's consolidated financial statements.2018.
2.     Acquisitions
Offer for Certain Verizon Data Center Assets Acquisition
On December 6, 2016,May 1, 2017, the Company entered into a transaction agreement withcompleted the acquisition of certain colocation business from Verizon Communications Inc. ("Verizon") to acquire Verizon's colocation services business at 24 data center sites, consisting of 29 data center buildings located in the United States, Brazil and Colombia, for a cash purchase price of $3,600,000,000.approximately $3.6 billion. The acquisition is expectedaddition of these facilities and customers adds to close by mid-2017.the Company's global platform, increases interconnections and assists with the Company's penetration of the enterprise and strategic markets, including government and energy. The Company expects to fundfunded the acquisitionVerizon Data Center Acquisition with a combination of cash on hand and proceeds offrom debt and equity financings. The Company expects to account for the Verizon data center sites acquisition as a business combination using the acquisition method of accounting.financings, which closed in January and March 2017.
In connection with the Verizon data center sites acquisition,Data Center Acquisition, the Company entered into a commitment letter (the "Commitment Letter"), dated December 6, 2016, with JPMorgan Chase Bank, N.A., Bank of America, N.A. and Merrill Lynch, Pierce, Fenner & Smith Incorporated (the "Commitment Parties"), pursuant to which the Commitment Parties havea group of lenders committed to provide a senior unsecured bridge facility in an aggregate principal amount of $2,000,000,000$2.0 billion for the purposes of funding (i) a portion of the cash consideration for the acquisition and (ii)Verizon Data Center Acquisition. Following the fees and expenses incurred in connection with the acquisition. The full amount must be drawn in a single drawing. The initial maturity date is 12 months from the datecompletion of the drawdowndebt and at the initial maturity date (if not repaid prior to that time), it will be converted into a seven-year senior unsecured term loan. Advances funded under the bridge facility shall accrue interest per annum at a rate of 4.25% which will increase by an additional 25 basis points 30 days after the closing date, by an additional 25 basis points 60 days after the closing date, by an additional 50 basis points 90 days after the closing date, and by an additional 50 basis points 120 days after the closing date, to the total cap, which is 1.75% per annum plus the greatest of (i) the yield per annum on the 5.875% Senior Notes Due 2016 (on the basis of the yield to maturity thereof), (ii) the yield per annum on the J.P. Morgan US Dollar Global High Yield Index minus 1.61% and (iii) 5.250% per annum, 180 days after the closing date. Commitment feesequity financings associated with the Commitment Letter are equal to (i) 0.50% ofVerizon Data Center Acquisition in March 2017, the commitment plus (ii) an additional 0.25% of the commitment that is four months after the date in whichCompany terminated the Commitment Letter was entered into. As of December 31, 2016, theLetter. The Company had accrued $10,000,000paid $10.0 million of commitment fees associated with the Commitment Letter and amortized $2,174,000recorded $2.2 million for the year ended December 31, 2016 and $7.8 million for the year ended December 31, 2017 to interest expense in the consolidated statementstatements of operations.
The Company included the Verizon Data Center Acquisition's results of operations from May 1, 2017 in its consolidated statements of operations and the fair value of assets acquired and liabilities assumed in its consolidated balance sheets beginning May 1, 2017. The Company incurred acquisition costs of approximately $28.5 million and $7.6 million during the year ended December 31, 2017 and December 31, 2016, respectively, related to the Verizon Data Center Acquisition.

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Purchase Price Allocation
The Verizon Data Center Acquisition constitutes a business under the accounting standard for business combinations and, therefore, was accounted for as a business combination using the acquisition method of accounting. As of December 31, 2018, the Company had completed the detailed valuation analysis to derive the fair value of assets acquired and liabilities assumed and updated the final allocation of purchase price from provisional amounts reported as of June 30, 2017, which primarily resulted in a decrease in intangible assets of $9.0 million and an increase in goodwill of $7.7 million. The changes in fair value of acquired assets and liabilities assumed did not have a significant impact on the Company's results of operations for any reporting periods prior to and including December 31, 2018.
The final purchase price allocation is as follows (in thousands):
 Certain Verizon Data Center Assets
Cash and cash equivalents$1,073
Accounts receivable2,019
Other current assets7,319
Property, plant and equipment840,335
Intangible assets (1)
1,693,900
Goodwill1,095,262
Total assets acquired3,639,908
Accounts payable and accrued liabilities(1,725)
Other current liabilities(2,020)
Capital lease and other financing obligations(17,659)
Deferred tax liabilities(18,129)
Other liabilities(5,689)
Net assets acquired$3,594,686
(1)
The nature of the intangible assets acquired is customer relationships with an estimated useful life of 15 years. Included in this amount is a customer relationship intangible asset for Verizon totaling $245.3 million. Pursuant to the acquisition agreement, the Company formalized agreements to provide pre-existing space and services to Verizon at the acquired data centers.
The fair value of customer relationships was estimated by applying an income approach. The Company applied discount rates ranging from 7.7% to 12.2%, which reflected the nature of the assets as they relate to the risk and uncertainty of the estimated future operating cash flows. Other assumptions used to estimate the fair value of customer relationships include projected revenue growth, customer attrition rates, sales and marketing expenses and operating margins. The fair value measurements were based on significant inputs that are not observable in the market and thus represent Level 3 measurements as defined in the accounting standard for fair value measurements.
The fair value of property, plant and equipment was estimated by applying the cost approach, with the exception of land which was estimated by applying the market approach. The cost approach is to use the replacement or reproduction cost as an indicator of fair value. The assumptions of the cost approach include replacement cost new, physical deterioration, functional and economic obsolescence, economic useful life, remaining useful life, age and effective age.
Goodwill is attributable to the workforce of the acquired business and the projected revenue increase expected to arise from future customers after the Verizon Data Center Acquisition. Goodwill is deductible for U.S. tax purposes and is attributable to the Company's Americas region. The Company's results of continuing operations include the Verizon Data Center Acquisition's revenues of $359.1 million and net income from continuing operations of $87.8 million for the period May 1, 2017 through December 31, 2017.
Other 2017 Acquisitions
In addition to the Verizon Data Center Acquisition, the Company also acquired Itconic, Zenium's data center business in Istanbul, Turkey and IO UK's data center business during 2017. The Company incurred acquisition costs of approximately $8.1 million in total during the year ended December 31, 2017 related to these acquisitions.

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On October 9, 2017, the Company completed the acquisition of Itconic for a cash purchase price of €220.5 million, or $259.1 million at the exchange rate in effect on October 9, 2017. Itconic is a data center provider in Spain and Portugal, and also includes CloudMas, an Itconic subsidiary which is focused on supporting enterprise adoption and use of cloud services. The acquisition includes five data centers in four metro areas, with two located in Madrid and one each in Barcelona, Seville and Lisbon. Itconic's operating results have been reported in the EMEA region following the date of acquisition.
The nature of the intangible assets acquired from the Itconic acquisition is customer relationships with an estimated useful life of 15 years. The fair value of customer relationships was estimated by applying an income approach. The Company applied a discount rate of 16.0%, which reflects the risk and uncertainty of the estimated future operating cash flows. Other assumptions include projected revenue growth, customer attrition rates and operating margins. The fair value measurements were based on significant inputs that are not observable in the market and thus represent Level 3 measurements as defined in the accounting standard for fair value measurements. Goodwill is attributable to the workforce of the acquired business and the projected revenue increase from future customers expected to arise after the acquisition.
On October 6, 2017, the Company acquired Zenium's data center business in Istanbul for a cash payment of approximately $92.0 million. Zenium's operating results have been reported in the EMEA region following the date of acquisition. The nature of the intangible assets acquired from this acquisition is customer relationships with an estimated useful life of 15 years.
As of December 31, 2018, the Company completed the detailed valuation analysis to derive the fair value of assets acquired and liabilities assumed from the Itconic and the Zenium data center acquisitions and updated the final allocation of purchase price from the provisional amounts reported as of December 31, 2017. The adjustments for the Zenium data center acquisition primarily resulted in an increase in property, plant and equipment of $5.2 million and a corresponding decrease in other assets of $5.2 million. The adjustments for Itconic primarily resulted in a decrease in property, plant and equipment of $3.6 million and an increase in goodwill of $2.6 million. The changes in fair value of acquired assets and liabilities assumed did not have a significant impact on the Company's results of operations for any reporting periods prior to and including December 31, 2018.
On February 3, 2017, the Company acquired IO UK's data center operating business in Slough, United Kingdom, for a cash payment of £29.1 million, or approximately $36.3 million at the exchange rate in effect on February 3, 2017. The acquired facility was renamed London 10 ("LD10") data center. LD10's operating results have been reported in the EMEA region following the date of acquisition. The nature of the intangible assets acquired from this acquisition is customer relationships with an estimated useful life of 10 years. As of December 31, 2017, the Company had finalized the allocation of purchase price for the IO Acquisition from the provisional amounts first reported as of March 31, 2017 and the adjustments made during the year ended December 31, 2017 were not significant. The changes in fair value of acquired assets and liabilities assumed did not have a significant impact on the Company's results of operations for any reporting periods prior to and including December 31, 2017.

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The final purchase price allocations for the three acquisitions are as follows (in thousands):
 Itconic 
Zenium
data center
 IO UK's
data center
Cash and cash equivalents$15,659
 $692
 $1,388
Accounts receivable16,429
 198
 7
Other current assets1,885
 6,430
 1,082
Property, plant and equipment64,499
 58,931
 40,251
Intangible assets101,755
 7,900
 6,252
Goodwill127,711
 21,834
 15,804
Deferred tax assets
 
 6,714
Other assets4,025
 313
 3,396
Total assets acquired331,963
 96,298
 74,894
Accounts payable and accrued liabilities(15,846) (1,012) (439)
Other current liabilities(12,374) (451) (168)
Capital lease and other financing obligations(30,666) 
 (33,091)
Loans payable(3,253) 
 (4,067)
Deferred tax liabilities(3,198) (2,227) 
Other liabilities(7,515) (614) (828)
Net assets acquired$259,111
 $91,994
 $36,301
Goodwill from the acquisitions of Itconic, the Zenium data center and IO UK's data center is not deductible for local tax purposes and is attributable to the Company's EMEA region. The Company's results of continuing operations include $22.4 million of revenues from the combined operations of Itconic, the Zenium data center and IO UK's data center and an insignificant net loss from continuing operations for the periods from their respective dates of acquisition through December 31, 2017.
2016 Acquisitions
On January 15, 2016, the Company had not drawn againstcompleted the Commitment Letter.
Parisacquisition of the entire issued and to be issued share capital of TelecityGroup. TelecityGroup operated data center facilities in cities across Europe. The acquisition of TelecityGroup enhances the Company's existing data center portfolio by adding new IBX Data Center Acquisitionmetro markets in Europe. As a result of the transaction, TelecityGroup has become a wholly-owned subsidiary of Equinix. The Company acquired all outstanding shares of TelecityGroup and all vested equity awards of TelecityGroup at 572.5 pence in cash and 0.0336 new shares of Equinix common stock for a total purchase consideration of approximately £2.6 billion, or approximately $3.7 billion at the exchange rate in effect on the acquisition date. In addition, the Company assumed $1.3 million of vested TelecityGroup's employee equity awards as part of consideration transferred. The Company incurred acquisition costs of approximately $42.5 million during the year ended December 31, 2016 related to the TelecityGroup acquisition. The Company's results of continuing operations include TelecityGroup revenues of $400.0 million and net loss from continuing operations of $47.1 million for the period January 15, 2016 through December 31, 2016.
On August 1, 2016, the Company completed the purchase of Digital Realty Trust, Inc.'s ("Digital Realty's") operating business, including its real estate and facility, located in St. Denis, Paris, for cash consideration of approximately €193,768,000€193.8 million, or $216,400,000$216.4 million at the exchange rate in effect on August 1, 2016 (the "Paris IBX Data Center Acquisition").2016. A portion of the building was leased to the Company and was being used by the Company as its Paris 2 and Paris 3 data centers. The Paris 2 lease was accounted for as an operating lease and the Paris 3 lease was accounted for as a financing lease. Upon acquisition, the Company in effect terminated both leases. The Company settled the financing lease obligation of Paris 3 for €47,790,000€47.8 million or approximately $53.4 million and recognized a loss on debt extinguishment of €8.8 million or approximately $9.9 million. The Company's results of continuing operations include $4.1 million of revenues and an insignificant net income from continuing operations for the period August 1, 2016 through December 31, 2016 from this acquisition. The Company incurred acquisition costs of approximately $12.0 million for the year ended December 31, 2016 related to this acquisition.

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$53,372,000 and recognized a loss on debt extinguishment of €8,828,000 or approximately $9,894,000. The Paris IBX Data Center Acquisition constitutes a business under the accounting standard for business combinations and as a result, the Paris IBX Data Center Acquisition was accounted for as a business combination using the acquisition method of accounting.
The Company included the incremental Paris IBX Data Center's results of operations from August 1, 2016 and the estimated fair value of assets acquired and liabilities assumed in its consolidated balance sheets beginning August 1, 2016. The Company incurred acquisition costs of approximately $11,978,000 for the year ended December 31, 2016 related to the Paris IBX Data Center Acquisition.
Purchase Price Allocation
Under the acquisition method of accounting, the total purchase price is allocated to the assets acquired and liabilities assumed measured at fair value on the date of acquisition. As of the date of this annual report, the Company had completed the detailed valuation analysis to derive the fair value of the following items including, but not limited to property, plant and equipment, intangible assets and leasehold interests. During the fourth quarter of 2016, the Company recorded certain measurement period adjustments that were insignificant to the results from operations for the year ended December 31, 2016.
The purchase price allocation, which excludes settlement of the Paris 3 financing obligations, was as follows (in thousands):
Cash and cash equivalent$4,073
Accounts receivable1,507
Other current assets794
Property, plant and equipment143,972
Intangible assets11,758
Goodwill48,835
Other assets81
Total assets acquired211,020
Accounts payable and accrued liabilities(2,044)
Other current liabilities(2,798)
Deferred tax liabilities(42,395)
Other liabilities(755)
Net assets acquired$163,028
Goodwill represents the excess of the purchase price over the fair value of the net tangible and intangible assets acquired. Goodwill is not expected to be deductible for local tax purposes. Goodwill will not be amortized and will be tested for impairment at least annually.

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The following table presents certain information on the acquired identifiable intangible assets (dollars in thousands):




Intangible Assets




Fair Value
 


Estimated Useful Lives (Years)
 Weighted-average Estimated Useful Lives (Years)
In-place leases$7,485
 0.9 - 9.4 4.3
Favorable leasehold interests4,273
 1.9 - 6.7 5.3
The fair value of in-place lease value may consist of a variety of components including, but not necessarily limited to: the value associated with avoiding the cost of originating the acquired in-place leases. The fair value of favorable leases was estimated based on the income approach, by computing the net present value of the difference between the contractual amounts to be paid pursuant to the lease agreements and estimates of the fair market lease rates for the corresponding in place leases measured over remaining non-cancellable terms of the leases. The fair value measurements were based on significant inputs that are not observable in the market and thus represent Level 3 measurements as defined in the accounting standard for fair value measurements.
The fair value of the property, plant and equipment was estimated by applying the income approach or cost approach, such as cash flows or earnings that an asset can be expected to generate over its useful life or the replacement or reproduction cost.
For the year ended December 31, 2016, the incremental revenues from the Paris IBX Data Center Acquisition were $4,084,000 and the incremental net income was not significant to the Company’s consolidated statement of operations. The incremental results of operations from the Paris IBX Data Center Acquisition are not significant; therefore the Company does not present pro forma combined results of operations.
TelecityGroup Acquisition
On January 15, 2016, the Company completed the acquisition of the entire issued and to be issued share capital of TelecityGroup. TelecityGroup operates data center facilities in cities across Europe. The acquisition of TelecityGroup enhances the Company's existing data center portfolio by adding new IBX metro markets in Europe including Dublin, Helsinki, Istanbul, Manchester, Milan, Sofia, Stockholm and Warsaw. As a result of the transaction, TelecityGroup has become a wholly-owned subsidiary of Equinix.
Under the terms of the acquisition, the Company acquired all outstanding shares of TelecityGroup and all vested equity awards of TelecityGroup at 572.5 pence in cash and 0.0336 new shares of Equinix common stock for a total purchase consideration of approximately £2,624,500,000 or approximately $3,743,587,000 at the exchange rate in effect on the acquisition date. In addition, the Company assumed $1,299,000 of vested TelecityGroup's employee equity awards as part of consideration transferred. The Company incurred acquisition costs of approximately $42,490,000 during the year ended December 31, 2016 related to the TelecityGroup acquisition.
In connection with the TelecityGroup acquisition, the Company placed £322,851,000 or approximately $475,689,000 into a restricted cash account, which was included in the current portion of restricted cash in the consolidated balance sheet as of December 31, 2015. The cash was released upon completion of the acquisition.
Also, in connection with TelecityGroup acquisition, the Company entered into a bridge credit agreement with J.P. Morgan Chase Bank, N.A. as the initial lender and as administrative agent for the lenders for a principal amount of £875,000,000 or approximately $1,289,000,000 at the exchange rate in effect on December 31, 2015 (the “Bridge Loan”). The Company did not make any borrowings under the Bridge Loan and the Bridge Loan was terminated on January 8, 2016.
Purchase Price Allocation
Under the acquisition method of accounting, the assets acquired and liabilities assumed in a business combination shall be measured at fair value at the date of the acquisition. As of the date of this annual report, the Company has completed the detailed valuation analysis to derive the fair value of the following items including, but not limited to, intangible assets, accounting for lease contracts; asset retirement obligations; favorable leasehold interests; assets and liabilities held for sale, deferred revenue; property, plant and equipment; accruals and taxes. Prior quarterly reports reported the allocation of the purchase price to acquired assets and liabilities based on provisional estimates that were subject to continuing management analysis. As of December 31, 2016, the Company has updated the final allocation of purchase price for TelecityGroup from provisional amounts reported as of March 31, 2016, which primarily resulted in increases to intangible assets of $36,758,000 and deferred tax liabilities of $19,500,000 and decreases in capital lease and other financing obligations of $34,443,000, goodwill of $22,511,000 and assets held for sale of

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$36,865,000. The changes did not have a significant impact on the Company’s results from operations for the year ended December 31, 2016.
As of the acquisition date, the allocation of the purchase price was as follows (in thousands):
Cash and cash equivalents$73,368
Accounts receivable24,042
Other current assets41,079
Assets held for sale877,650
Property, plant and equipment1,058,583
Goodwill2,215,567
Intangible assets694,243
Deferred tax assets994
Other assets4,102
Total assets acquired4,989,628
Accounts payable and accrued expenses(84,367)
Accrued property, plant and equipment(3,634)
Other current liabilities(27,233)
Liabilities held for sale(155,650)
Capital lease and other financing obligations(165,365)
Mortgage and loans payable(592,304)
Deferred tax liabilities(176,168)
Other liabilities(40,021)
Net assets acquired$3,744,886

The purchase price allocation above, as of the acquisition date, includes acquired assets and liabilities that were classified by the Company as held for sale (Note 4).
The following table presents certain information on the acquired intangible assets (dollars in thousands):




Intangible Assets




Fair Value
 


Estimated Useful Lives (Years)
 Weighted-average Estimated Useful Lives (Years)
Customer relationships$591,956
 13.5 13.5
Trade names72,033
 1.5 1.5
Favorable leases30,254
 2.0 - 25.4 19.7

The fair value of customer relationships was estimated by applying an income approach. The fair value was determined by calculating the present value of estimated future operating cash flows generated from existing customers less costs to realize the revenue. The Company applied a weighted-average discount rate of approximately 8.5%, which reflected the nature of the assets as it relates to the estimated future operating cash flows. Other significant assumptions used to estimate the fair value of the customer relationships include projected revenue growth, customer attrition rates, sales and marketing expenses and operating margins. The fair value of the TelecityGroup's trade names was estimated using the relief of royalty approach. The Company applied a relief of royalty rate of 2.0% and a weighted-average discount rate of approximately 9.0%. The other acquired identifiable intangible assets were estimated by applying a relief of royalty or cost approach as appropriate. The fair value measurements were based on significant inputs that are not observable in the market and thus represent Level 3 measurements as defined in the accounting standard for fair value measurements.
The fair value of the property, plant and equipment was estimated by applying the income approach or cost approach. The income approach is used to estimate fair value based on the income stream, such as cash flows or earnings that an asset can be expected to generate over its useful life. There are two primary methods of applying the income approach to determine the fair

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value of assets: the discounted cash flow method and the direct capitalization method. The key assumptions include the estimated earnings, discount rate and direct capitalization rate. The cost approach is to use the replacement or reproduction cost as an indicator of fair value. The premise of the cost approach is that a market participant would pay no more for an asset than the amount for which the asset could be replaced or reproduced. The key assumptions of the cost approach include replacement cost, physical deterioration, functional and economic obsolescence, economic useful life, remaining useful life, age and effective age.
The Company determined the fair value of the loans payable assumed in the TelecityGroup acquisition by estimating TelecityGroup’s debt rating and reviewing market data with a similar debt rating and other characteristics of the debt, including the maturity date and security type. On January 15, 2016, the Company prepaid and terminated these loans payable. In conjunction with the repayment of the loans payable, the Company incurred an insignificant amount of pre-payment penalties and interest rate swap termination costs, which were recorded as interest expense in the consolidated statement of operations.
Goodwill represents the excess of the purchase price over the fair value of the net tangible and intangible assets acquired. The goodwill is attributable to the workforce of the acquired business and the significant synergies expected to arise after the acquisition. Goodwill is not expected to be deductible for local tax purposes. Goodwill will not be amortized and will be tested for impairment at least annually. Goodwill recorded as a result of the TelecityGroup acquisition, except for the goodwill associated with asset held for sale, is attributable to the Company’s EMEA region. The Company's results of continuing operations include TelecityGroup revenues of $399,978,000 and net loss from continuing operations of $47,133,000 for the period January 15, 2016 through December 31, 2016.
Bit-isle Acquisition
On November 2, 2015, the Company, acting through its Japanese subsidiary, completed a cash tender offer for approximately 97% of the equity instruments, including stock options, of Tokyo-based Bit-isle. The Company acquired the remaining outstanding equity instruments of Bit-isle in December 2015. The offer price was JPY 922 per share, in an all cash transaction totaling ¥33,196,000,000 or approximately $275,367,000 at the exchange rate in effect on the date of the acquisition.
On September 30, 2015, the Company, acting through its Japanese subsidiaries as borrowers, entered into a term loan agreement (the “Bridge Term Loan Agreement”) with the Bank of Tokyo-Mitsubishi UFJ, Ltd. (“BTMU”). Pursuant to the Bridge Term Loan Agreement, BTMU committed to provide a senior bridge loan facility (the “Bridge Term Loan”) in the amount of up to ¥47,500,000,000, or approximately $395,675,000 at the exchange rate in effect on September 30, 2015. Proceeds from the Bridge Term Loan were to be used exclusively for the acquisition of Bit-isle, the repayment of Bit-isle’s existing debt and transaction costs incurred in connection with the closing of the Bridge Term Loan and the acquisition of Bit-isle. In October 2016, the Company borrowed ¥47,500,000,000 on a five year term loan agreement with BTMU and repaid the Bridge Term Loan. See Note 10 for further information.
The Company included Bit-isle’s results of operations from November 2, 2015 and the estimated fair value of assets acquired and liabilities assumed in its consolidated balance sheets beginning November 2, 2015. The Company incurred acquisition costs of approximately $8,645,000 for the year ended December 31, 2015 related to the Bit-isle Acquisition.
In June 2016, the Company approved the divestiture of the solar power assets of Bit-isle. See Note 4 below for further information.


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Purchase Price Allocation
Under the acquisition method of accounting, the total purchase price was allocated to Bit-isle’s net tangible and intangible assets based upon their fair value as of the Bit-isle acquisition date. Based upon the purchase price and the valuation of Bit-isle, the final purchase price allocation was as follows (in thousands):
Cash and cash equivalent$33,198
Accounts receivable7,359
Other current assets51,038
Long-term investments3,806
Property, plant and equipment308,985
Goodwill95,444
Intangible assets111,374
Other assets22,981
Total assets acquired634,185
Accounts payable and accrued expenses(15,028)
Accrued property, plant and equipment(465)
Capital lease and other financing obligations(108,833)
Mortgage and loans payable(190,227)
Other current liabilities(8,689)
Deferred tax liabilities(32,192)
Other liabilities(3,384)
Net assets acquired$275,367
The following table presents certain information on the acquired identifiable intangible assets (dollars in thousands):




Intangible Assets




Fair Value
 


Estimated Useful Lives (Years)
 Weighted-average Estimated Useful Lives (Years)
Customer relationships$105,434
 13 13
Trade name3,455
 2 2
Favorable solar contracts2,410
 18 18
Other intangible assets75
 0.25 0.25
The fair value of customer relationships was estimated by applying an income approach. The fair value was determined by calculating the present value of estimated future operating cash flows generated from existing customers less costs to realize the revenue. The Company applied a weighted-average discount rate of approximately 11.0%, which reflected the nature of the assets as it relates to the estimated future operating cash flows. Other significant assumptions used to estimate the fair value of the customer relationships include projected revenue growth, customer attrition rates, sales and marketing expenses and operating margins. The fair value of the Bit-isle trade name was estimated using the relief of royalty approach. The Company applied a relief of royalty rate of 2.0% and a weighted-average discount rate of approximately 12.0%. The other acquired identifiable intangible assets were estimated by applying an income or cost approach as appropriate. The fair value measurements were based on significant inputs that are not observable in the market and thus represent Level 3 measurements as defined in the accounting standard for fair value measurements.
The fair value of the property, plant and equipment was estimated by applying the income approach or cost approach. The income approach is used to estimate fair value based on the income stream, such as cash flows or earnings that an asset can be expected to generate over its useful live. There are two primary methods of applying the income approach to determine the fair value assets: the discounted cash flow method and the direct capitalization method. The key assumptions include the estimated earnings, discount rate and direct capitalization rate. The cost approach is to use the replacement or reproduction cost as an indicator of fair value. The premise of the cost approach is that a market participant would pay no more for an asset than the amount that

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



the asset could be replaced or reproduced. The key assumptions of the cost approach include replacement cost new, physical deterioration, functional and economic obsolescence, economic useful life, remaining useful life, age and effective age.
The Company determined the fair value of the loans payable assumed in the Bit-isle Acquisition by estimating Bit-isle’s debt rating and reviewed market data with a similar debt rating and other characteristics of the debt, including the maturity date and security type. During the year ended December 31, 2015, the Company prepaid and terminated the majority of these loans payable. In conjunction with the repayment of the loans payable, the company incurred an insignificant amount of pre-payment penalties and interest rate swap termination costs, which were recorded as interest expense in the consolidated statement of operations for the year ended December 31, 2015.
Goodwill represents the excess of the purchase price over the fair value of the net tangible and intangible assets acquired. The goodwill is attributable to the workforce of the acquired business and the significant synergies expected to arise after the acquisition. The goodwill is not expected to be deductible for local tax purposes. Goodwill will not be amortized and will be tested for impairment at least annually. Goodwill recorded as a result of the Bit-isle acquisition is attributable to the Company’s Asia-Pacific reportable segment (see Note 17) and reporting unit (see Note 6). For the year ended December 31, 2015, the Company's results of continuing operations include Bit-isle revenues of $21,588,000 and net losses of $3,233,000.
Unaudited Pro Forma Combined Consolidated Financial Information
The following unaudited pro forma combined consolidated financial information has been prepared by the Company using the acquisition method of accounting to give effect to the TelecityGroup acquisitionVerizon Data Center Acquisition as though it occurred on January 1, 20152016. The incremental results of operations from the other acquisitions are not significant and are therefore not reflected in the Bit-isle acquisition as though it occurred on January 1, 2014. pro forma combined results of operations.
The Company completed the TelecityGroup acquisitionVerizon Data Center Acquisition on January 15,May 1, 2017. The unaudited pro forma combined financial information for the years ending December 31, 2017 and 2016 combine the actual results of the Company and the Bit-isle acquisition on November 2, 2015. TelecityGroup'sactual Verizon Data Center Acquisition operating results for the period January 15, 2016 through December 31, 2016 are included inprior to the consolidated statement of operations for the year ended December 31, 2016. The pro forma effect for the period January 1 through January 14, 2016 was insignificant. The unaudited pro forma combined consolidated financial information reflectsacquisition date and reflect certain adjustments, such as additional depreciation, amortization and interest expense on assets and liabilities acquired.acquired and acquisition financings.
The Company and Verizon entered into agreements at the closing of the Verizon Data Center Acquisition pursuant to which the Company will provide space and services to Verizon at the acquired data centers. These arrangements are not reflected in the unaudited pro forma combined financial information.
The unaudited pro forma combined consolidated financial information is presented for illustrative purposes only and is not necessarily indicative of the results of operations that would have actually been reported had the acquisitionsacquisition occurred on the above dates, nor is it necessarily indicative of the future results of operations of the combined company.
The following table sets forth the unaudited pro forma consolidated combined results of operations for the years ended December 31, 20152017 and 20142016 (in thousands)thousands, except per share amounts):
 2015 2014
Revenues$3,244,349
 $2,614,127
Net income from continuing operations141,496
 (251,067)
Basic EPS2.10
 (4.80)
Diluted EPS2.08
 (4.80)
Nimbo Acquisition
On January 14, 2015, the Company acquired all of the issued and outstanding share capital of Nimbo Technologies Inc. (“Nimbo”), a company which specializes in migrating business applications to the cloud with extensive experience moving legacy applications into a hybrid cloud architecture, and connecting legacy data centers to the cloud, for a cash payment of $10,000,000 and a contingent earn-out arrangement to be paid over two years (the “Nimbo Acquisition”). Nimbo continues to operate under the Nimbo name. The Nimbo Acquisition was accounted for using the acquisition method. As a result of the Nimbo Acquisition, the Company recorded goodwill of $17,192,000, which represents the excess of the total purchase price over the fair value of the assets acquired and liabilities assumed. The Company recorded the contingent earn-out arrangement at its estimated fair value. The results of operations for Nimbo are not significant to the Company; therefore, the Company does not present its purchase price allocation or pro forma combined results of operations. In addition, any prospective changes in the Company’s earn-out estimates are not expected to have a material effect on the Company’s consolidated statement of operations.
 2017 2016
Revenues$4,509,602
 $4,053,280
Net income from continuing operations258,618
 19,248
Basic EPS3.31
 0.25
Diluted EPS3.28
 0.25

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



ALOG Acquisition
On April 25, 2011, the Company and RW Brasil Fundo de Investimento em Participações, a subsidiary of Riverwood Capital L.P. (“Riverwood”), completed the acquisition of approximately 90% of the outstanding capital stock of ALOG Data Centers do Brasil S.A. (“ALOG”). As a result, the Company acquired an approximate 53% controlling equity interest in ALOG (the “ALOG Acquisition”).
In July 2014, the Company and Riverwood entered into a purchase and sale agreement in which the Company acquired Riverwood’s interest in ALOG and the approximate 10% of ALOG owned by ALOG management, which resulted in the Company owning 100% of ALOG. The net purchase price of $225,629,000 consisted of: (i) $216,484,000 of cash paid to Riverwood and ALOG management to acquire their interests in ALOG, (ii) $8,459,000 of cash paid for the common shares of ALOG related to vested and outstanding stock options to purchase common shares of ALOG that were held by ALOG employees and (iii) $686,000 for the assumption of Riverwood’s portion of the contingent consideration in connection with the acquisition of ALOG in 2011. The cash portion of the purchase price was paid on the closing date in July 2014. The net increase in the redemption value of the redeemable non-controlling interests of $90,966,000 and transaction costs of $1,333,000 were recorded in additional paid-in capital during the year ended December 31, 2014.
3.    Earnings Per Share
4.Earnings Per Share
The following table sets forth the computation of basic and diluted EPS for the years ended December 31 (in thousands, except per share amounts):
 2016 2015 2014
Net income (loss) from continuing operations$114,408
 $187,774
 $(260,726)
Net income from discontinued operations, net of tax12,392
 
 
Net income (loss)126,800
 187,774
 (260,726)
Net loss from continuing operations attributable to redeemable non-controlling interests
 
 1,179
Net income (loss) attributable to Equinix, basic and diluted$126,800
 $187,774
 $(259,547)
      
Weighted-average shares used to calculate basic EPS70,117
 57,790
 52,359
Effect of dilutive securities:     
Employee equity awards699
 693
 
Total dilutive potential shares699
 693
 
Weighted-average shares used to calculate diluted EPS70,816
 58,483
 52,359
      
Basic EPS attributable to Equinix:     
Continuing operations$1.63
 $3.25
 $(4.96)
Discontinued operations0.18
 
 
Basic EPS$1.81
 $3.25
 $(4.96)
      
Diluted EPS attributable to Equinix:     
Continuing operations$1.62
 $3.21
 $(4.96)
Discontinued operations0.17
 
 
Diluted EPS$1.79
 $3.21
 $(4.96)

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



 2018 2017 2016
Net income from continuing operations$365,359
 $232,982
 $114,408
Net income from discontinued operations, net of tax
 
 12,392
Net income$365,359
 $232,982
 $126,800
      
Weighted-average shares used to calculate basic EPS79,779
 76,854
 70,117
Effect of dilutive securities:     
Employee equity awards418
 681
 699
Weighted-average shares used to calculate diluted EPS80,197
 77,535
 70,816
      
Basic EPS:     
Continuing operations$4.58
 $3.03
 $1.63
Discontinued operations
 
 0.18
Basic EPS$4.58
 $3.03
 $1.81
      
Diluted EPS:     
Continuing operations$4.56
 $3.00
 $1.62
Discontinued operations
 
 0.17
Diluted EPS$4.56
 $3.00
 $1.79
The following table sets forth potential shares of common stock that are not included in the diluted EPS calculation above because to do so would be anti-dilutive for the years ended December 31 (in thousands):
2016 2015 20142018 2017 2016
Shares related to the potential conversion of 3.00% convertible subordinated notes
 
 861
Shares related to the potential conversion of 4.75% convertible subordinated notes893
 1,977
 2,824

 
 893
Common stock related to employee equity awards27
 88
 1,820
265
 63
 27
920
 2,065
 5,505
265
 63
 920
4.    
5.Assets Held for Sale
In October 2016, the Company entered into a Share Transfer Agreement for the transfer of common stock of Terra Power Co., Ltd., relating to the divestiture of the solar power assets of Bit-isle. The Company received ¥2,900.0 million or approximately $25.9 million in 2016 and the remaining payment of ¥5,313.4 million in the first quarter of 2017, or approximately $47.8 million. During the three months ended September 30, 2016, the Company evaluated the recoverability of the carrying value of its assets held for sale related to the sales agreement signed in October and concluded that the Company would not recover the carrying value of certain assets. Accordingly, the Company recorded an impairment charge on other current assets of $7.7 million on September 30, 2016, reducing the carrying value of such assets from $79.5 million to the estimated fair value of $71.8 million. The associated loss on the sale was not significant. Furthermore, the revenue and net income generated by the solar power assets of Bit-isle during the year ended December 31, 2016 were not significant.
During the fourth quarter of 2015, the Company entered into an agreementand TelecityGroup agreed to sell a parceldivest certain data centers, including the Company's London 2 ("LD2") data center and certain data centers of land in San Jose, California and reported the San Jose land parcel as an asset held for saleTelecityGroup in the accompanying consolidated balance sheet as of December 31, 2015. The sale was completedUnited Kingdom, Netherlands and Germany, in February 2016 and the Company recognized a gain on sale of $5,242,000.
In order to obtain the approval of the European Commission for the acquisition of TelecityGroup, the Company and TelecityGroup agreed to divest certain data centers, including the Company’s London 2 data center ("LD2") and certain data centers of TelecityGroup in the United Kingdom ("UK"), Netherlands, and Germany.TelecityGroup. The assets and liabilities of LD2 which were included within the EMEA operating segment, were classified as held for sale in the fourth quarter of 20152015. The assets and therefore,liabilities of data centers from TelecityGroup were classified as held for sale on January 15, 2016, upon close TelecityGroup acquisition. The divestiture of these data centers was completed on July 5, 2016. The Company recognized a gain on the corresponding depreciation and amortization expense was ceased at that time. This divestiture was not presented as discontinued operationssale of LD2 data center of $27.9 million in gains on asset sales in the consolidated statements of operations because it did not represent a strategic shift infor the Company's business, as the Company continued operating similar businesses after the divestiture. The divestiture was completed on July 5, 2016 and the Company recognized a gain of $27,945,000 on the sale of the LD2 data center, which is included in gain on asset sales in the consolidated statement of operations for year ended December 31, 2016. During the years ended December 31,

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



2016, 2015 and 2014,the LD2 data center generated revenue of $6,116,000, $17,579,000$6.1 million and $21,772,000, respectively, andan insignificant net income of $2,327,000, $7,166,000 and $9,218,000, respectively.
The acquisition of TelecityGroup closed on January 15, 2016. Accordingly, the assets and liabilities of the TelecityGroup data centers that were divested were included in assets and liabilities held for sale in the consolidated balance sheet through July 5, 2016, the date the divestiture closed.income. The results of operations for the TelecityGroup data centers that were divested, as well as the gain on divestiture, were classified as discontinued operations from January 15, 2016, the date the acquisition closed, through July 5, 2016 (see Note 5)6).
In June 2016,During the Company approved the divestiturefourth quarter of the solar power assets of Bit-isle. In October 2016,2015, the Company entered into an agreement to sell a Share Transfer Agreement for the transferparcel of common stock of Terra Power Co., Ltd., relating to the divestiture of the solar power assets of Bit-isle.land in San Jose, California. The Company received ¥400,000,000 upon the closing of the transaction, or approximately$3,816,000 at the exchange ratesale was completed in effect on October 31, 2016. By November 30,February 2016 and the Company had received an additional ¥2,500,000,000, or approximately $22,083,000 at the exchange rate in effect at the timerecognized a gain on sale of cash receipt. The Company expects to receive the remaining payment of ¥5,313,384,000 in the first quarter of 2017, or approximately $45,483,000 at the exchange rate in effect on December 31, 2016. The associated loss on the sale was insignificant. Furthermore, the revenue and net income generated by the solar power assets of Bit-isle during the years ended December 31, 2016 and 2015 were insignificant.
When an asset is classified as held for sale, the asset’s book value is evaluated and adjusted to the lower of its carrying amount or fair value less cost to sell. The determination of fair value for assets is dependent upon, among other factors, the potential sales transaction, composition of assets in the disposal group, the comparability of the disposal group to market transactions and negotiations with third party purchasers, etc. Such factors impact the range of potential fair values and the selection of the best estimates.
During the quarter ended September 30, 2016, the Company evaluated the recoverability of the carrying value of its assets held for sale. Based on the analysis, it was determined that during negotiation of the sales agreement, the Company would not recover the carrying value of certain assets. Accordingly, the Company recorded an impairment charge on other current assets of $7,698,000 in the third quarter of 2016, reducing the carrying value of such assets from $79,459,000 to the estimated fair value of $71,761,000. The revenue and net income generated by the solar power assets of Bit-isle during the year ended December 31, 2016 were insignificant.

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



The following table summarizes the assets and liabilities that were classified in assets and liabilities held for sale in the consolidated balance sheet as of December 31 (in thousands):
 2016 2015
Accounts receivable$
 $2,222
Other current assets
 408
Property, plant and equipment
 23,533
Goodwill
 5,000
Intangible assets
 784
Other assets
 1,310
Total assets held for sale$
 $33,257
    
Accounts payable and accrued expenses$
 $(654)
Accrued property, plant and equipment
 (816)
Other current liabilities
 (435)
Other liabilities
 (1,630)
Total liabilities held for sale$
 $(3,535)

$5.2 million.
5. Discontinued Operations
6.Discontinued Operations
In order to obtain the approval of the European Commission for the acquisition of TelecityGroup, the Company and TelecityGroup agreed to divest certain data centers of TelecityGroup in the United Kingdom, Netherlands and Germany. Accounting guidance requires a business activity that, on acquisition, meets the criteria to beThese TelecityGroup data centers were classified as held for sale beon the acquisition date and were reported as a discontinued operation. operations.
On July 5, 2016, the Company completed the sale of these data centers and related assets to Digital Realty for approximately €304,564,000€304.6 million and £376,171,000,£376.2 million, or approximately total of $827,314,000$827.3 million at the exchange rates in effect on July 5, 2016. The Company recognized a gain on sale of the TelecityGroup data centers in discontinued operations of $2,351,000.$2.4 million. The results of operations for these data centers that were divested, as well as the gain on divestiture, have been reported as net income from discontinued operations, net of tax, from January 15, 2016, the date of the acquisition, throughto July 5, 2016 in the Company's consolidated statementstatements of operations. As of the date of acquisition, depreciation and amortization of discontinued operations ceased. Capital expenditures from the date of acquisition through the date of sale were $31.5 million.
The following table presents the financial results of the Company's discontinued operations for the year ended December 31, 2016.2016 (in thousands). The Company didn'tdid not record income from discontinued operations, net of income taxestax for the years ended December 31, 20152018 and 2014.2017.
 2016
Revenue$48,782
Costs and operating expenses: 
Cost of revenues24,795
Sales and marketing1,030
General and administrative7,026
Total costs and operating expenses32,851
Income from operations of discontinued operations15,931
Interest expense and other, net(1,286)
Income from discontinued operations before income taxes14,645
Income tax expense(4,604)
Gain on sale of discontinued operations, net of income taxes2,351
Income from discontinued operations, net of income taxes$12,392
As of the date of acquisition, depreciation and amortization of discontinued operations were ceased. Capital expenditures from the date of acquisition through the date of sale were $31,537,000.
 2016
Revenues$48,782
Costs and operating expenses: 
Cost of revenues24,795
Sales and marketing1,030
General and administrative7,026
Total costs and operating expenses32,851
Income from operations of discontinued operations15,931
Interest expense and other, net(1,286)
Income from discontinued operations before income taxes14,645
Income tax expense(4,604)
Gain on sale of discontinued operations, net of tax2,351
Net income from discontinued operations, net of tax$12,392

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



6.    Balance Sheet Components
7.Balance Sheet Components
Cash, Cash Equivalents and Short-Term and Long-Term Investments
Cash, cash equivalents and short-term and long-term investments consisted of the following as of December 31 (in thousands):
2016 20152018 2017
Cash and cash equivalents:      
Cash (1)
$345,119
 $1,139,554
$486,648
 $985,382
Cash equivalents:      
Money market funds400,388
 1,089,284
119,518
 427,135
Certificate of deposit2,969
 
Total cash and cash equivalents748,476
 2,228,838
606,166
 1,412,517
Marketable securities:   
Short-term and long-term investments:   
Certificates of deposit6,988
 14,106
2,823
 31,351
Publicly traded equity securities6,463
 3,353
1,717
 6,163
Total marketable securities13,451
 17,459
Total short-term and long-term investments4,540
 37,514
Total cash, cash equivalents and short-term and long-term investments$761,927
 $2,246,297
$610,706
 $1,450,031
_________________________
(1)Excludes restricted cash.
(1)
Excludes restricted cash.
(2)
Total unrealized gains on the publicly traded equity securities as of December 31, 2017 were insignificant. The changes in the fair values of publicly traded equity securities were recognized within other income (expense) in the Company's consolidated statements of operations as a result of the adoption of ASU 2016-01 on January 1, 2018.
As of December 31, 20162018 and 2015,2017, cash and cash equivalents included investments which were readily convertible to cash and had original maturity dates of 90 days or less. The maturities of debt instrumentscertificates of deposit classified as short-term investments were one year or less as of December 31, 20162018 and 2015.2017. The maturities of debt instrumentscertificates of deposits classified as long-term investments were greater than one year and less than three years as of December 31, 2016 and 2015.
2017. The following table summarizes the cost and estimated fair valuebalance of marketable debt securities based on stated effective maturitiescertificates of deposits, by contractual maturity, as of December 31 (in thousands):
2016 2015
Amortized Cost Fair Value Amortized Cost Fair Value2018 2017
Due within one year$3,409
 $3,409
 $12,875
 $12,875
$2,823
 $28,271
Due after one year through three years3,579
 3,579
 1,231
 1,231

 3,080
Total$6,988
 $6,988
 $14,106
 $14,106
$2,823
 $31,351
AsAccounts Receivable
Accounts receivable, net, consisted of the following as of December 31 2016, the Company’s net unrealized gains (losses) on its available-for-sale securities were comprised of the following (in thousands):
 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value
Certificates of deposit$6,988
 $
 $
 $6,988
Publicly traded equity securities4,850
 1,613
 
 6,463
Total$11,838
 $1,613
 $
 $13,451
 2018 2017
Accounts receivable$646,069
 $594,541
Allowance for doubtful accounts(15,950) (18,228)
Accounts receivable, net$630,119
 $576,313
None ofTrade accounts receivable are recorded at the securities held at December 31, 2016 were other-than-temporarily impaired.invoiced amount and generally do not bear interest.

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



As of December 31, 2015, the Company’s net unrealized gains (losses) on its available-for-sale securities were comprised of the following (in thousands):
 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value
Certificates of deposit$14,106
 $
 $
 $14,106
Publicly traded equity securities3,561
 
 (208) 3,353
Total$17,667
 $
 $(208) $17,459
None of the securities held at December 31, 2015 were other-than-temporarily impaired.
Accounts Receivable
Accounts receivable, net, consisted of the following as of December 31 (in thousands):
 2016 2015
Accounts receivable$411,920
 $302,316
Allowance for doubtful accounts(15,675) (10,352)
Accounts receivable, net$396,245
 $291,964
Trade accounts receivable are recorded at the invoiced amount and generally do not bear interest.
The following table summarizes the activity of the Company’sCompany's allowance for doubtful accounts (in thousands):
Balance as of December 31, 2013$6,640
Provision for allowance for doubtful accounts7,093
Net write-offs(3,825)
Impact of foreign currency exchange(442)
Balance as of December 31, 20149,466
Provision for allowance for doubtful accounts5,037
Net write-offs(3,438)
Impact of foreign currency exchange(713)
Balance as of December 31, 201510,352
Provision for allowance for doubtful accounts8,260
Net write-offs(2,521)
Impact of foreign currency exchange(416)
Balance as of December 31, 2016$15,675

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Balance as of December 31, 2015$10,352
Provision for allowance for doubtful accounts8,260
Net write-offs(2,521)
Impact of foreign currency exchange(416)
Balance as of December 31, 201615,675
Provision for allowance for doubtful accounts5,627
Net write-offs(4,546)
Impact of foreign currency exchange1,472
Balance as of December 31, 201718,228
Provision for allowance for doubtful accounts7,236
Net write-offs(8,396)
Impact of foreign currency exchange(1,118)
Balance as of December 31, 2018$15,950
Other Current Assets
Other current assets consisted of the following as of December 31 (in thousands):
2016 20152018 2017
Prepaid expenses$79,258
 $48,322
$70,433
 $64,832
Taxes receivable102,002
 33,979
98,245
 110,961
Restricted cash, current10,887
 26,919
Other receivables46,809
 1,925
12,611
 7,797
Derivative instruments54,072
 60,165
62,170
 4,175
Contract asset, current9,778
 
Other current assets22,190
 68,538
10,733
 17,343
Total other current assets$304,331
 $212,929
$274,857
 $232,027
Property, Plant and Equipment, Net
Property, plant and equipment, net consisted of the following as of December 31 (in thousands):
2016 20152018 2017
Core systems$4,760,868
 $3,820,772
$7,073,912
 $6,334,702
Buildings2,785,799
 2,383,387
4,822,501
 3,906,686
Leasehold improvements1,599,424
 1,204,900
1,637,133
 1,850,351
Construction in progress645,388
 351,697
974,152
 425,428
Personal property622,069
 450,914
857,585
 798,133
Land237,349
 183,946
631,367
 423,539
10,650,897
 8,395,616
15,996,650
 13,738,839
Less accumulated depreciation(3,451,687) (2,789,180)(4,970,630) (4,344,237)
Property, plant and equipment, net$7,199,210
 $5,606,436
$11,026,020
 $9,394,602
Core systems, buildings, leasehold improvements, personal property and construction in progress recorded under capital and finance leases aggregated to $715,264,000$823.6 million and $725,337,000$760.4 million as of December 31, 20162018 and 2015,2017, respectively. AmortizationAs of December 31, 2018 and 2017, the Company recorded accumulated depreciation for assets recorded under capital leases is included in depreciation expenseof $248.9 million and accumulated depreciation on such assets totaled $161,355,000 and $117,338,000 as of December 31, 2016 and 2015,$199.2 million, respectively.

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Goodwill and Other Intangibles
The following table presents goodwill and other intangible assets, net, for the yearyears ended December 31, 20162018 and 20152017 (in thousands):
2016 20152018 2017
Goodwill:      
Americas$469,438
 $460,203
$1,745,804
 $1,561,512
EMEA2,281,306
 374,070
2,474,164
 2,610,899
Asia-Pacific235,320
 228,927
616,420
 239,351
$2,986,064
 $1,063,200
$4,836,388
 $4,411,762
   
Intangible assets, net:      
Intangible assets - customer contracts$839,593
 $326,493
Intangible assets - customer relationships$2,733,864
 $2,673,886
Intangible assets - trade names69,519
 10,390
71,778
 73,295
Intangible assets - favorable leases38,139
 7,871
35,969
 37,913
Intangible assets - in-place leases33,671
 10,327
Intangible assets - licenses9,697
 9,697
9,697
 9,696
Intangible assets - others19
 3,101
956,967
 357,552
2,884,979
 2,805,117
Accumulated amortization - customer contracts(183,270) (120,660)
Accumulated amortization - customer relationships(467,111) (331,930)
Accumulated amortization - trade names(43,830) (4,303)(62,585) (71,728)
Accumulated amortization - favorable leases(8,027) (5,416)(9,986) (9,607)
Accumulated amortization - in-place leases(8,118) (3,644)
Accumulated amortization - licenses(2,591) (1,942)(3,883) (3,236)
Accumulated amortization - others(18) (666)
(237,736) (132,987)(551,683) (420,145)
Total intangible assets, net$719,231
 $224,565
$2,333,296
 $2,384,972
Changes in the carrying amount of goodwill by geographic regions are as follows (in thousands):
 Americas EMEA Asia-Pacific Total
Balance as of December 31, 2014$463,902
 $404,093
 $134,134
 $1,002,129
Purchase accounting adjustments17,192
 
 95,437
 112,629
Asset held for sale adjustments
 (5,000) 
 (5,000)
Impact of foreign currency exchange(20,891) (25,023) (644) (46,558)
Balance as of December 31, 2015460,203
 374,070
 228,927
 1,063,200
Purchase accounting adjustments - TelecityGroup
 2,215,567
 
 2,215,567
Purchase accounting adjustments - Paris IBX Data Center acquisition
 48,835
 
 48,835
Asset held for sale adjustments
 1,605
 
 1,605
Impact of foreign currency exchange9,235
 (358,771) 6,393
 (343,143)
Balance as of December 31, 2016$469,438
 $2,281,306
 $235,320
 $2,986,064
 Americas EMEA Asia-Pacific Total
Balance as of December 31, 2016$469,438
 $2,281,306
 $235,320
 $2,986,064
Purchase accounting adjustments - Verizon Data Center acquisition1,095,262
 
 
 1,095,262
Purchase accounting adjustments - Other 2017 acquisitions
 163,993
 
 163,993
Impact of foreign currency exchange(3,188) 165,600
 4,031
 166,443
Balance as of December 31, 20171,561,512
 2,610,899
 239,351
 4,411,762
Purchase accounting adjustments - Infomart Dallas acquisition197,378
 
 
 197,378
Purchase accounting adjustments - Metronode acquisition
 
 413,871
 413,871
Purchase accounting adjustments - Other acquisitions333
 1,357
 
 1,690
Impact of foreign currency exchange(13,419) (138,092) (36,802) (188,313)
Balance as of December 31, 2018$1,745,804
 $2,474,164
 $616,420
 $4,836,388

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Changes in the net book value of intangible assets by geographic regions are as follows (in thousands):
Americas EMEA Asia-Pacific TotalAmericas EMEA Asia-Pacific Total
Balance as of December 31, 2013$76,224
 $82,709
 $25,249
 $184,182
Amortization of intangibles(12,257) (12,795) (2,704) (27,756)
Impact of foreign currency exchange(1,013) (7,729) (157) (8,899)
Balance as of December 31, 201462,954
 62,185
 22,388
 147,527
Nimbo acquisition1,089
 
 
 1,089
Bit-isle acquisition
 
 111,374
 111,374
Asset held for sale adjustments
 (784) 
 (784)
Write-off of intangible asset
 (357) 
 (357)
Amortization of intangibles(11,432) (11,675) (4,339) (27,446)
Impact of foreign currency exchange(1,968) (5,014) 144
 (6,838)
Balance as of December 31, 201550,643
 44,355
 129,567
 224,565
$50,643
 $44,355
 $129,567
 $224,565
TelecityGroup acquisition
 694,243
 
 694,243

 694,243
 
 694,243
Paris IBX Data Center acquisition
 11,758
 
 11,758

 11,758
 
 11,758
Sale of Terra Power
 
 (2,460) (2,460)
 
 (2,460) (2,460)
Write-off of intangible asset(573) 
 
 (573)(573) 
 
 (573)
Amortization of intangibles(11,348) (97,715) (13,799) (122,862)(11,348) (97,715) (13,799) (122,862)
Impact of foreign currency exchange1,395
 (90,280) 3,445
 (85,440)1,395
 (90,280) 3,445
 (85,440)
Balance as of December 31, 2016$40,117
 $562,361
 $116,753
 $719,231
40,117
 562,361
 116,753
 719,231
Verizon Data Center acquisition1,693,900
 
 
 1,693,900
Other 2017 acquisitions
 112,645
 
 112,645
Write-off of intangible asset
 (725) 
 (725)
Amortization of intangibles(84,749) (79,105) (13,154) (177,008)
Impact of foreign currency exchange(2,895) 36,043
 3,781
 36,929
Balance as of December 31, 20171,646,373
 631,219
 107,380
 2,384,972
Infomart Dallas acquisition65,847
 
 
 65,847
Metronode acquisition
 
 128,229
 128,229
Other acquisitions
 8,342
 
 8,342
Write-off of intangible asset(334) (1,661) (3) (1,998)
Amortization of intangibles(125,683) (62,283) (15,450) (203,416)
Impact of foreign currency exchange(7,232) (31,757) (9,691) (48,680)
Balance as of December 31, 2018$1,578,971
 $543,860
 $210,465
 $2,333,296
The Company’sCompany's goodwill and intangible assets in EMEA, denominated in Euros, British Pounds, Turkish Lira and the United Arab Emirates Dirham, British Pounds and Euros, goodwill and intangible assets in Asia-Pacific, denominated in Australian Dollars, Singapore Dollars, Hong Kong Dollars, Japanese Yen and Chinese Yuan, and certain goodwill and intangibles in Americas, denominated in Canadian Dollars, and Brazilian Reals and Colombian Pesos, are subject to foreign currency fluctuations. The Company’sCompany's foreign currency translation gains and losses, including goodwill and intangibles, are a component of other comprehensive income and loss.
Estimated future amortization expense related to these intangibles is as follows (in thousands):
Years ending:  
2017$98,178
201871,381
201967,056
$199,862
202060,805
193,073
202153,044
185,332
2022181,211
2023180,883
Thereafter368,767
1,392,935
Total$719,231
$2,333,296

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Other Assets
Other assets consisted of the following as of December 31 (in thousands):
2016 20152018 2017
Deferred tax assets, net$62,308
 $61,152
$58,300
 $66,031
Prepaid expenses, non-current80,888
 54,372
Prepaid expenses125,158
 89,784
Debt issuance costs, net6,611
 19,709
8,532
 10,670
Deposits40,893
 33,132
54,986
 48,296
Restricted cash, non-current9,706
 10,172
Restricted cash10,551
 11,265
Derivative instruments15,907
 8,735
10,904
 4,110
Other assets, non-current9,985
 11,358
Contract assets, non-current16,396
 
Contract costs188,200
 
Other assets60,225
 11,594
Total other assets$226,298
 $198,630
$533,252
 $241,750
Accounts Payable and Accrued Expenses
Accounts payable and accrued expenses consisted of the following as of December 31 (in thousands):
2016 20152018 2017
Accounts payable$60,211
 $49,892
$96,980
 $101,744
Accrued compensation and benefits172,808
 131,204
235,697
 214,585
Accrued interest95,832
 67,077
126,142
 100,347
Accrued taxes(1)
133,562
 37,004
118,818
 130,272
Accrued utilities and security44,202
 31,789
78,547
 68,916
Accrued professional fees14,071
 18,380
17,010
 13,830
Accrued repairs and maintenance5,430
 3,618
10,736
 11,232
Accrued other55,623
 61,984
72,762
 78,331
Total accounts payable and accrued expenses$581,739
 $400,948
$756,692
 $719,257
__________________________
(1)Includes income taxes payable of $44,048,000 and $14,527,000, respectively, as of December 31, 2016 and 2015.
(1)
Includes income taxes payable of $67.9 million and $56.4 million, respectively, as of December 31, 2018 and 2017.
Other Current Liabilities
Other current liabilities consisted of the following as of December 31 (in thousands):
2016 20152018 2017
Deferred installation revenue$61,399
 $56,055
Deferred revenue, current$73,143
 $87,300
Customer deposits13,894
 23,676
20,430
 16,598
Derivative instruments10,819
 79,256
8,812
 34,466
Deferred recurring revenue18,704
 12,515
Deferred rent4,158
 3,572
6,466
 6,546
Dividends payable11,999
 13,674
8,795
 11,181
Asset retirement obligations10,036
 
6,776
 1,716
Other current liabilities2,131
 3,538
2,573
 2,107
Total other current liabilities$133,140
 $192,286
$126,995
 $159,914

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Other Liabilities
Other liabilities consisted of the following as of December 31 (in thousands):
 2016 2015
Asset retirement obligations, non-current$92,979
 $78,482
Deferred tax liabilities, net274,341
 100,624
Deferred installation revenue, non-current96,744
 86,660
Deferred rent, non-current76,566
 68,787
Accrued taxes, non-current56,208
 26,763
Dividends payable, non-current8,495
 13,394
Customer deposits, non-current4,773
 4,701
Deferred recurring revenue, non-current2,681
 3,645
Derivative instruments140
 669
Other liabilities10,321
 6,688
Total other liabilities$623,248
 $390,413
 2018 2017
Asset retirement obligations$89,887
 $96,823
Deferred tax liabilities, net247,849
 252,287
Deferred revenue, non-current46,641
 121,257
Deferred rent108,693
 97,782
Accrued taxes116,735
 64,378
Dividends payable6,545
 6,669
Customer deposits9,671
 10,849
Derivative instruments928
 6,381
Other liabilities2,814
 5,284
Total other liabilities$629,763
 $661,710
The following table summarizes the activities of the Company’sCompany's asset retirement obligation liability("ARO") (in thousands):
Asset retirement obligations as of December 31, 2013$59,548
Additions5,774
Adjustments (1)
(871)
Accretion expense2,438
Impact of foreign currency exchange(2,031)
Asset retirement obligations as of December 31, 201464,858
Additions17,337
Adjustments (1)
(4,676)
Accretion expense3,349
Impact of foreign currency exchange(2,386)
Asset retirement obligations as of December 31, 201578,482
$78,482
Additions22,955
22,955
Adjustments (1)
(2,366)(2,366)
Accretion expense6,685
6,685
Impact of foreign currency exchange(2,741)(2,741)
Asset retirement obligations as of December 31, 2016$103,015
103,015
Additions17,736
Adjustments (1)
(34,576)
Accretion expense7,335
Impact of foreign currency exchange5,029
Asset retirement obligations as of December 31, 201798,539
Additions5,126
Adjustments (1)
(11,288)
Accretion expense6,285
Impact of foreign currency exchange(1,999)
Asset retirement obligations as of December 31, 2018$96,663
__________________________
(1)Reversal of asset retirement obligations associated with leases that were amended.

(1)
The ARO adjustments are primarily due to lease amendments and acquisition of real estate assets, as well as other adjustments.
7.     Derivatives and Hedging Instruments
8.Derivatives and Hedging Instruments
Derivatives Designated as Hedging Instruments
Net Investment Hedges. The Company is exposed to the impact of foreign exchange rate fluctuations on its investments in foreign subsidiaries whose functional currencies are other than the U.S. dollar. In order to mitigate the impact of foreign currency exchange rates, the Company has entered into various foreign currency loansdebt obligations, which are designated as hedges against the Company's net investment in foreign subsidiaries. As of December 31, 20162018 and 2015,2017, the total principal amount of foreign currency loans, which weredebt obligations designated as net investment hedges, was $646,219,000$4,139.8 million and $411,881,000,$3,149.5 million, respectively. In March 2016,From time to time, the Company began usingalso uses foreign exchange forward contracts to hedge against the effect of foreign exchange rate fluctuations on a portion of its net investment in the foreign subsidiaries. For a net investment hedge, changes in the fair value of the hedging instrument designated as a net investment hedge, except the ineffective portion and forward points, are recorded as a component of accumulated other comprehensive income (loss) in the consolidated balance sheet.

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



designated as a net investment hedge, except the ineffective portion and forward points, are recorded as a component of other comprehensive income in the consolidated balance sheet.
The Company recorded pre-tax net foreign exchange gains of $45,505,000$218.3 million and $4,484,000, net foreign exchange losses of amounts reclassified to gain on sale of discontinued operations,$235.3 million in other comprehensive income (loss) for the years ended December 31, 20162018 and 2015,2017, respectively. The Company recorded no ineffectiveness from its net investment hedges for the years ended December 31, 20162018 and 2015.2017.
Cash Flow Hedges. The Company hedges its foreign currency translation exposure for forecasted revenues and expenses in its EMEA region between the U.S. dollar and the British Pound, Euro, Swedish Krona and Swiss Franc. TheFrom time to time, the foreign currency forward and option contracts that the Company uses to hedge this exposure are designated as cash flow hedges under the accounting standard for derivatives and hedging.
The Company also uses purchased collar options to manage a portion of its exposure to foreign currency exchange rate fluctuations, where the Company writes a foreign currency call option and purchases a foreign currency put option. When two or more derivative instruments in combination are jointly designated as a cash flow hedging instrument, they are treated as a single instrument.
Effective January 1, 2015, the Company began to enterenters into intercompany hedging instruments (“("intercompany derivatives”derivatives") with a wholly-owned subsidiary of the Company in order to hedge certain forecasted revenues and expenses denominated in currencies other than the U.S. dollar. Simultaneously, the Company enters into derivative contracts with unrelated third parties to externally hedge the net exposure created by such intercompany derivatives.
The following disclosure is prepared on a consolidated basis. Assets and liabilities resulting from intercompany derivatives have been eliminated in consolidation. As of December 31, 2016,2018, the Company's cash flow hedge instruments had maturity dates rangingranging from January 2019 to December 2020 as f January 2017 to November 2018 as followsollows (in thousands):
Notional Amount 
Fair Value (1)
 
Accumulated Other Comprehensive Income (Loss) (2)(3)
Notional Amount 
Fair Value (1)
 
Accumulated Other Comprehensive Income (Loss) (2)(3)
Derivative assets$545,638
 $44,570
 $42,634
$642,542
 $38,606
 $27,968
Derivative liabilities42,207
 (1,815) (1,453)118,324
 (865) (1,997)
$587,845
 $42,755
 $41,181
$760,866
 $37,741
 $25,971
__________________________
(1)
All derivative assets related to cash flow hedges are included in the consolidated balance sheets within other current assets, other assets, other current liabilities and other liabilities.
(2)
Included in the consolidated balance sheets within accumulated other comprehensive income (loss).
(3)
The Company recorded a net gain of $31,896$21.4 million within accumulated other comprehensive income (loss) relating to cash flow hedges that will be reclassified to revenue and expenses as they mature over the next 12 months.
As of December 31, 2015,2017, the Company's cash flow hedge instruments had maturity dates ranging from January 20162018 to December 2017October 2019 as follows (in(in thousands):
Notional Amount 
Fair Value (1)
 
Accumulated Other Comprehensive Income (Loss) (2)(3)
Notional Amount 
Fair Value (1)
 
Accumulated Other Comprehensive Income (Loss) (2)(3)
Derivative assets$367,330
 $16,027
 $34,578
$72,262
 $2,379
 $2,055
Derivative liabilities47,447
 (813) (19,709)440,637
 (29,777) (34,311)
$414,777
 $15,214
 $14,869
$512,899
 $(27,398) $(32,256)
__________________________
(1)
All derivative assets related to cash flow hedges are included in the consolidated balance sheets within other current assets, other assets, other current liabilities and other liabilities.
(2)
Included in the consolidated balance sheets within accumulated other comprehensive income (loss).
(3)
The Company recorded a net gainloss of $12,940$26.7 million within accumulated other comprehensive income (loss) relating to cash flow hedges that will be reclassified to revenue and expenses as they mature over the next 12 months.
During the yearsyear ended December 31, 2016 and 2015,2018, the amount of net gains from the ineffective and excluded portions of cash flow hedges recognized in other income (expense) was $16.5 million. During the year ended December 31, 2017, the amount of net gains from the ineffective and excluded portions of cash flow hedges recognized in other income (expense) was $3.8 million. During the year ended December 31, 2018, the amount of net losses reclassified from accumulated other comprehensive income (loss) to revenues was $30.6 million and the amount of net gains reclassified from accumulated other comprehensive income (loss) to operating expenses were not significant.$15.3 million. During the year ended December 31, 2017, the amount of net gains reclassified from accumulated other comprehensive income (loss) to revenues was $20.8 million and the amount of net losses reclassified from accumulated other comprehensive income (loss) to operating expenses was $11.2 million. During the year ended December 31, 2016, the amount of net gains reclassified from accumulated other comprehensive income (loss) to revenues was $38,427,000 and the amount of net losses reclassified from$38.4 million

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



accumulated other comprehensive income (loss) to operating expenses were $19,908,000. During the year ended December 31, 2015, the amount of net gains reclassified from accumulated other comprehensive income (loss) to revenues was $27,973,000 and the amount of net losses reclassified from accumulated other comprehensive income (loss) to operating expenses was $6,256,000. During the year ended December 31, 2014, the amount of net gains reclassified from accumulated other comprehensive income (loss) to revenues was $4,332,000 and the amount of net losses reclassified from accumulated other comprehensive income (loss) to operating expenses was not significant.$19.9 million.
Derivatives Not Designated as Hedging Instruments
Embedded Derivatives. The Company is deemed to have foreign currency forward contracts embedded in certain of the Company’sCompany's customer agreements that are priced in currencies different from the functional or local currencies of the parties involved. These embedded derivatives are separated from their host contracts and carried on the Company’sCompany's balance sheet at their fair value. The majority of these embedded derivatives arise as a result of the Company’sCompany's foreign subsidiaries pricing their customer contracts in the U.S. dollar. Gains and losses on these embedded derivatives are included within revenues in the Company’sCompany's consolidated statements of operations. The company recognized a net loss of $6.8 million during the year ended December 31, 2017. During the years ended December 31, 2018 and 2016, and 2015, the gaingains or losslosses associated with these embedded derivatives was insignificant. During the year ended December 31, 2014, the Company recognized a net gain of $3,807,000 associated with these embedded derivatives.were not significant.
Economic Hedges of Embedded Derivatives. The Company uses foreign currency forward contracts to help manage the foreign exchange risk associated with the Company’sCompany's customer agreements that are priced in currencies different from the functional or local currencies of the parties involved (“("economic hedges of embedded derivatives”derivatives"). Foreign currency forward contracts represent agreements to exchange the currency of one country for the currency of another country at an agreed-upon price on an agreed-upon settlement date. Gains and losses on these contracts are included in revenues along with gains and losses of the related embedded derivatives. The Company entered into various economic hedges of embedded derivatives during the years ended December 31, 2016, 20152018, 2017 and 2014.2016. During the years ended December 31, 2018 and 2017, the gains or losses associated with these economic hedges of embedded derivatives were not significant. The Company recognized a net gain of $2,884,000 during the year ended December 31, 2016 and a net loss of $2,287,000 and $2,602,000$2.9 million during the years ended December 31, 2015 and 2014, respectively.2016.
Foreign Currency Forward and Option Contracts.currency forward contracts. The Company also uses foreign currency forward and option contracts to manage the foreign exchange risk associated with certain foreign currency-denominated monetary assets and liabilities.liabilities on the consolidated balance sheets. As a result of foreign currency fluctuations, the U.S. dollar equivalent values of its foreign currency-denominated monetary assets and liabilities change. Gains and losses on these contracts are included in other income (expense), on a net basis, along with the foreign currency gains and losses of the related foreign currency-denominated monetary assets and liabilities associated with these foreign currency forward contracts. The Company entered into various foreign currency forward and option contracts during the years ended December 31, 2016, 20152018, 2017 and 2014.2016. The Company recognized a net gain of $74,173,000$91.2 million during the year ended December 31, 2016. The Company recognized2018, a net loss of $24,319,000$69.0 million during the year ended December 31, 20152017 and a net gain of $12,657,000$74.2 million during the year ended December 31, 2014.2016 related to its foreign currency forward contracts.

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Offsetting Derivative Assets and Liabilities
The following table presents the fair value of derivative instruments recognized in the Company’sCompany's consolidated balance sheets as of December 31, 20162018 (in thousands):
Gross Amounts Gross Amounts Offset in the Consolidated Balance Sheet 
Net Consolidated Balance Sheet Amounts(1)
 
Gross Amounts not Offset in the Consolidated Balance Sheet (2)
 NetGross Amounts Gross Amounts Offset in the Consolidated Balance Sheet 
Net Consolidated Balance Sheet Amounts(1)
 
Gross Amounts not Offset in the Consolidated Balance Sheet (2)
 Net
Assets:                  
Designated as hedging instruments:                  
Cash flow hedges         
Foreign currency forward and option contracts$44,570
 $
 $44,570
 $(1,815) $42,755
Net investment hedges         
Foreign currency forward contracts6,930
 
 6,930
 (3,310) 3,620
51,500
 
 51,500
 (5,125) 46,375
         
Not designated as hedging instruments:         
Embedded derivatives9,745
 
 9,745
 
 9,745
Foreign currency forward contracts8,734
 
 8,734
 (1,873) 6,861
18,479
 
 18,479
 (1,873) 16,606
Additional netting benefit
 
 
 (2,436) (2,436)
$69,979
 $
 $69,979
 $(9,434) $60,545
         
Liabilities:         
Designated as hedging instruments:         
Cash flow hedges         
Foreign currency forward and option contracts$1,815
 $
 $1,815
 $(1,815) $
Net investment hedges         
Foreign currency forward contracts3,525
 
 3,525
 (3,310) 215
5,340
 
 5,340
 (5,125) 215
         
Foreign currency forward contracts designated as cash flow hedges$38,606
 $
 $38,606
 $(865) $37,741
Not designated as hedging instruments:                  
Embedded derivatives1,525
 
 1,525
 
 1,525
4,656
 
 4,656
 
 4,656
Economic hedges of embedded derivatives866
 
 866
 
 866
525
 
 525
 (104) 421
Foreign currency forward contracts3,228
 
 3,228
 (1,873) 1,355
29,287
 
 29,287
 (2,941) 26,346
5,619
 
 5,619
 (1,873) 3,746
34,468
 
 34,468
 (3,045) 31,423
Additional netting benefit
 
 
 (2,436) (2,436)
 
 
 (2,607) (2,607)
$10,959
 $
 $10,959
 $(9,434) $1,525
$73,074
 $
 $73,074
 $(6,517) $66,557
Liabilities:         
Designated as hedging instruments:         
Foreign currency forward contracts designated as cash flow hedges$865
 $
 $865
 $(865) $
Not designated as hedging instruments:         
Embedded derivatives2,426
 
 2,426
 
 2,426
Economic hedges of embedded derivatives180
 
 180
 (104) 76
Foreign currency forward contracts6,269
 
 6,269
 (2,941) 3,328
8,875
 
 8,875
 (3,045) 5,830
Additional netting benefit
 
 
 (2,607) (2,607)
$9,740
 $
 $9,740
 $(6,517) $3,223
_______________________
(1)
As presented in the Company’sCompany's consolidated balance sheets within other current assets, other assets, other current liabilities and other liabilities.
(2)
The Company enters into master netting agreements with its counterparties for transactions other than embedded derivatives to mitigate credit risk exposure to any single counterparty. Master netting agreements allow for individual derivative contracts with a single counterparty to offset in the event of default. For presentation on the consolidated balance sheets, the Company elects not to offset fair value amounts recognized for derivative instruments under master netting arrangements.

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)




The following table presents the fair value of derivative instruments recognized in the Company’sCompany's consolidated balance sheets as of December 31, 20152017 (in thousands):
Gross Amounts Gross Amounts Offset in the Consolidated Balance Sheet 
Net Consolidated Balance Sheet Amounts(1)
 
Gross Amounts not Offset in the Consolidated Balance Sheet (2)
 NetGross Amounts Gross Amounts Offset in the Consolidated Balance Sheet 
Net Consolidated Balance Sheet Amounts(1)
 
Gross Amounts not Offset in the Consolidated Balance Sheet (2)
 Net
Assets:                  
Designated as hedging instruments:                  
Foreign currency forward and option contracts$16,027
 $
 $16,027
 $(813) $15,214
         
Foreign currency forward contracts designated as cash flow hedges$2,379
 $
 $2,379
 $(2,379) $
Not designated as hedging instruments:                  
Embedded derivatives8,926
 
 8,926
 
 8,926
5,076
 
 5,076
 
 5,076
Economic hedges of embedded derivatives744
 
 744
 
 744
325
 
 325
 
 325
Foreign currency forward contracts43,203
 
 43,203
 (34,577) 8,626
505
 
 505
 (340) 165
52,873
 
 52,873
 (34,577) 18,296
5,906
 
 5,906
 (340) 5,566
Additional netting benefit
 
 
 (9,512) (9,512)
 
 
 (490) (490)
$68,900
 $
 $68,900
 $(44,902) $23,998
$8,285
 $
 $8,285
 $(3,209) $5,076
         
Liabilities:                  
Designated as hedging instruments:                  
Foreign currency forward and option contracts$813
 $
 $813
 $(813) $
         
Foreign currency forward contracts designated as cash flow hedges$29,777
 $
 $29,777
 $(2,379) $27,398
Not designated as hedging instruments:                  
Embedded derivatives1,772
 
 1,772
 
 1,772
3,503
 
 3,503
 
 3,503
Economic hedges of embedded derivatives417
 
 417
 
 417
20
 
 20
 
 20
Foreign currency forward contracts76,923
 
 76,923
 (34,577) 42,346
7,547
 
 7,547
 (340) 7,207
79,112
 
 79,112
 (34,577) 44,535
11,070
 
 11,070
 (340) 10,730
Additional netting benefit
 
 
 (9,512) (9,512)
 
 
 (490) (490)
$79,925
 $
 $79,925
 $(44,902) $35,023
$40,847
 $
 $40,847
 $(3,209) $37,638
_________________________
(1)
As presented in the Company’sCompany's consolidated balance sheets within other current assets, other assets, other current liabilities and other liabilities.
(2)
The Company enters into master netting agreements with its counterparties for transactions other than embedded derivatives to mitigate credit risk exposure to any single counterparty. Master netting agreements allow for individual derivative contracts with a single counterparty to offset in the event of default. For presentation on the consolidated balance sheets, the Company elects not to offset fair value amounts recognized for derivative instruments under master netting arrangements.
8.     Fair Value Measurements
9.Fair Value Measurements
Valuation Methods
Fair value estimates are made as of a specific point in time based on methods using the market approach valuation method which uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities or other valuation techniques. These techniques involve uncertainties and are affected by the assumptions used and the judgments made regarding risk characteristics of various financial instruments, discount rates, estimates of future cash flows, future expected loss experience and other factors.
Cash, Cash Equivalents and Investments. The fair value of the Company's investments in money market funds approximates their face value. Such instruments are included in cash equivalents. The Company’sCompany's money market funds and publicly traded equity securities are classified within Level 1 of the fair value hierarchy because they are valued using quoted prices for identical instruments in active markets. The fair value of the Company's other investments, including certificates of deposit, approximates

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



instruments in active markets. The fair value of the Company's other investments approximate their face value and include certificates of deposit.value. The fair value of these investments is priced based on the quoted market price for similar instruments or nonbinding market prices that are corroborated by observable market data. Such instruments are classified within Level 2 of the fair value hierarchy. The Company determines the fair values of its Level 2 investments by using inputs such as actual trade data, benchmark yields, broker/dealer quotes and other similar data, which are obtained from quoted market prices, custody bank, third-party pricing vendors or other sources. The Company uses such pricing data as the primary input to make its assessments and determinations as to the ultimate valuation of its investment portfolio and has not made, during the periods presented, any material adjustments to such inputs. The Company is responsible for its consolidated financial statements and underlying estimates.
The Company uses the specific identification method in computing realized gains and losses. Realized gains and losses on the investments are included within other income (expense) in the Company’sCompany's consolidated statements of operations. Short-term and long-termThe Company's investments are classified as available-for-sale andin publicly traded equity securities are carried at fair value withvalue. Subsequent to the adoption of ASU 2016-01, unrealized gains and losses on publicly traded equity securities are reported within other income (expense) in the Company's consolidated statements of operations. Prior to the adoption of ASU 2016-01, unrealized gains and losses on publicly traded equity securities were reported in stockholders’stockholders' equity as a component of other comprehensive income or loss,loss. Upon adoption of ASU 2016-01, the Company recorded a net cumulative effect increase of any related tax effect. The Company reviews its investment portfolio quarterly$2.1 million to determine if any securities may be other-than-temporarily impaired due to increased credit risk, changes in industry or sector of a certain instrument or ratings downgrades over an extended period of time.retained earnings.
Derivative Assets and Liabilities. For derivatives, the Company uses forward contract and option models employing market observable inputs, such as spot currency rates and forward points with adjustments made to these values utilizing published credit default swap rates of its foreign exchange trading counterparties and other comparable companies. The Company has determined that the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, therefore the derivatives are categorized as Level 2.
During the years ended December 31, 20162018 and 2015,2017, the Company did not have any nonfinancial assets or liabilities measured at fair value on a recurring basis.
The Company’sCompany's financial assets and liabilities measured at fair value on a recurring basis as of December 31, 20162018 were as follows (in thousands):
Fair Value at
December 31,
 
Fair Value
Measurement Using
Fair Value at
December 31,
 
Fair Value
Measurement Using
2016 Level 1 Level 22018 Level 1 Level 2
Assets:          
Cash$345,119
 $345,119
 $
$486,648
 $486,648
 $
Money market and deposit accounts400,388
 400,388
 
119,518
 119,518
 
Publicly traded equity securities6,463
 6,463
 
1,717
 1,717
 
Certificates of deposit9,957
 
 9,957
2,823
 
 2,823
Derivative instruments (1)
69,979
 
 69,979
73,074
 
 73,074
$831,906
 $751,970
 $79,936
$683,780
 $607,883
 $75,897
Liabilities:          
Derivative instruments (1)
$10,959
 $
 $10,959
$9,740
 $
 $9,740
_________________________
(1)
Includes both foreign currency embedded derivatives and foreign currency forward and option contracts. Amounts are included within other current assets, other assets, other current liabilities and other liabilities in the Company’sCompany's consolidated balance sheet.

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The Company’sCompany's financial assets and liabilities measured at fair value on a recurring basis at December 31, 20152017 were as follows (in thousands):
Fair Value at
December 31,
 
Fair Value
Measurement Using
Fair Value at
December 31,
 
Fair Value
Measurement Using
2015 Level 1 Level 22017 Level 1 Level 2
Assets:          
Cash$1,139,554
 $1,139,554
 $
$985,382
 $985,382
 $
Money market and deposit accounts1,089,284
 1,089,284
 
427,135
 427,135
 
Publicly traded equity securities3,353
 3,353
 
6,163
 6,163
 
Certificates of deposit14,106
 
 14,106
31,351
 
 31,351
Derivative instruments (1)
68,900
 
 68,900
8,285
 
 8,285
$2,315,197
 $2,232,191
 $83,006
$1,458,316
 $1,418,680
 $39,636
Liabilities:          
Derivative instruments (1)
$79,925
 $
 $79,925
$40,847
 $
 $40,847
_________________________
(1)
Includes embedded derivatives,both foreign currency embedded derivatives and foreign currency forward contracts. Amounts are included within other current assets, other assets, other current liabilities and other liabilities in the Company’sCompany's consolidated balance sheet.
The Company did not have any Level 3 financial assets or financial liabilities during the years ended December 31, 20162018 and 2015.2017.
9.     Leases
10.Leases
Capital Lease and Other Financing Obligations
The Company’sCompany's capital lease and other financing obligations expire at various dates ranging from 20172019 to 2053. The weighted average effective interest rate of the Company’sCompany's capital lease and other financing obligations was 7.96%7.88% as of December 31, 2016.2018.
The Company’sCompany's capital lease and other financing obligations are summarized as follows as of December 31, 20162018 (in thousands):
Capital Lease Obligations Other Financing Obligations TotalCapital Lease Obligations 
Other Financing Obligations (1)
 Total
2017$82,688
 $78,914
 $161,602
201883,046
 75,841
 158,887
201983,871
 70,893
 154,764
$103,859
 $80,292
 $184,151
202083,925
 69,838
 153,763
97,326
 73,266
 170,592
202184,192
 70,911
 155,103
95,414
 73,672
 169,086
202294,954
 73,856
 168,810
202395,463
 69,423
 164,886
Thereafter827,125
 693,385
 1,520,510
878,755
 722,496
 1,601,251
Total minimum lease payments1,244,847
 1,059,782
 2,304,629
1,365,771
 1,093,005
 2,458,776
Plus amount representing residual property value
 508,857
 508,857

 389,643
 389,643
Less amount representing interest(551,507) (750,191) (1,301,698)(602,026) (727,472) (1,329,498)
Present value of net minimum lease payments693,340
 818,448
 1,511,788
763,745
 755,176
 1,518,921
Less current portion(26,973) (74,073) (101,046)(43,498) (34,346) (77,844)
$666,367
 $744,375
 $1,410,742
Total$720,247
 $720,830
 $1,441,077
(1)
Other financing obligations are primarily related to build-to-suit arrangements. 


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New York 4, New York 5, New York 6 and New York 7 ("NY4, NY5, NY6 and NY7") Data Centers
In December 2018, the Company entered into new lease agreements with the landlord of the Company's NY4, NY5 and NY6 data centers, replacing the existing leases. Additionally, the Company signed a modification of the lease agreement for its NY7 IBX data center. The total contractual obligation over the estimated term of the four new leases is collectively approximately $335.6 million. The Company had previously accounted for NY4 and NY7 as capital leases and NY5 and NY6 as build-to-suit arrangements. Pursuant to the current accounting standard for leases, the Company determined that NY4 and NY7 continued to be accounted for as capital leases and recognized an incremental capital lease obligation of $23.7 million during the three months ended December 31, 2018. As a result of the new leases for NY5 and NY6, the Company recognized a loss on debt extinguishment of approximately $6.5 million during the three months ended December 31, 2018. Monthly payments under NY4, NY5, NY6 will be made through December 2048. The Company has certain renewal options available after December 2048, which have not been included in the lease term. Monthly payments under NY7 will be made through December 2028.
Stockholm 2 ("SK2") Data Center
In March 2018, the Company acquired the land and building for the SK2 IBX data center for cash consideration of SEK457.9 million, or approximately $54.9 million at the exchange rate in effect on March 31, 2018. The Company had previously accounted for SK2 as a build-to-suit arrangement. As a result of the purchase, the prior arrangement was effectively terminated, and the financing obligation was settled in full. The Company settled the financing obligation of the SK2 data center for SEK234.5 million or approximately $28.1 million and recognized a loss on debt extinguishment of SEK170.5 million, or approximately $20.4 million at the exchange rate in effect on March 31, 2018.
Tokyo 511 ("TY5"TY11") Phase 1 Equipment LeasesData Center
In February 2016,2018, the Company entered into a lease agreement for certain equipment in TY5the TY11 IBX data center in Tokyo metro area. Thecenter. Pursuant to the accounting standard for leases, the Company assessed the lease wasclassification of the TY11 lease and determined that the lease should be accounted for as a capital lease. Monthly payments underDuring the equipmentthree months ended March 31, 2018, the Company recorded a capital lease will be made through February 2032 at an effective interest rate of 6.33%. The total outstanding obligation under the equipment lease wastotaling approximately ¥3,074,947,000,¥2,348.5 million, or $27,244,000 in U.S. dollarsapproximately $22.1 million at the exchange rate in effect ason March 31, 2018. The lease has a term of 30 years through February 29, 2016.2048.
Operating Leases
The Company also leases its IBX data centers and certain equipment under noncancelable operating lease agreements. The majority of the Company’sCompany's operating leases for its land and IBX data centers expire at various dates through 2065 with renewal options available to the Company. The lease agreements typically provide for base rental rates that increase at defined intervals during the term of the lease. In addition, the Company has negotiated some rent expense abatement periods for certain leases to better match the phased build out of its IBX data centers. The Company accounts for such abatements and increasing base rentals using the straight-line method over the life of the lease. The difference between the straight-line expense and the cash payment is recorded as deferred rent (see Note 6, “Other7, "Other Current Liabilities”Liabilities" and “Other Liabilities”"Other Liabilities").
Minimum future operating lease payments as of December 31, 20162018 are summarized as follows (in thousands):
Years ending:  
2017$142,854
2018138,555
2019134,123
$187,280
2020122,781
179,515
2021114,890
166,159
2022158,115
2023147,677
Thereafter958,068
1,130,494
Total$1,611,271
$1,969,240
Total rent expense was approximately $140,604,000, $101,547,000$185.4 million, $157.9 million and $105,391,000$140.6 million for the years ended December 31, 2018, 2017 and 2016, 2015 and 2014, respectively.
10.    Debt Facilities
Mortgage and Loans Payable
The Company’s mortgage and loans payable consisted of the following as of December 31 (in thousands):
 2016 2015
Term loans$1,006,982
 $456,740
Bridge term loan
 386,547
Japanese Yen term loan406,600
 
Revolving credit facility borrowings
 325,622
Brazil financings
 27,113
Mortgage payable and other loans payable44,382
 47,677
 1,457,964
 1,243,699
Less the amount representing debt discount and debt issuance cost(22,811) (2,681)
Add the amount representing mortgage premium1,862
 1,987
 1,437,015
 1,243,005
Less current portion(67,928) (770,236)
 $1,369,087
 $472,769

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11.Debt Facilities
Mortgage and Loans Payable
The Company's mortgage and loans payable consisted of the following as of December 31 (in thousands):
 2018 2017
Term loans$1,344,482
 $1,417,352
Mortgage payable and other loans payable44,042
 48,872
 1,388,524
 1,466,224
Less the amount representing unamortized debt discount and debt issuance cost(6,614) (10,666)
Add the amount representing unamortized mortgage premium1,882
 2,051
 1,383,792
 1,457,609
Less current portion(73,129) (64,491)
 $1,310,663
 $1,393,118
Senior Credit Facility
On December 17, 2014,12, 2017, the Company entered into a credit agreement with a group of lenders for a $1,500,000,000$3,000.0 million credit facility (“("Senior Credit Facility”Facility"), comprised of a $1,000,000,000$2,000.0 million senior unsecured multicurrency revolving credit facility (“("Revolving Credit Facility”Facility") and a $500,000,000an approximately $1,000.0 million senior unsecured multicurrency term loan facility (“("Term Loan A Facility”Facility"). The Senior Credit Facility contains twocustomary covenants, including financial covenants with which require the Company must comply on a quarterly basis, including a maximum consolidated net lease adjustedto maintain certain financial coverage and leverage ratioratios, as well as customary events of default, and a minimum consolidated fixed charge coverage ratio. The Senior Credit Facility is guaranteed by certain of the Company’sCompany's domestic subsidiaries and is secured by its domestic accounts receivable as well as pledges of the equity interest of certain of the Company’s direct and indirect subsidiaries. The RevolvingSenior Credit Facility and the Term Loan A Facility both havehas a five-year term, maturing on December 17, 2019, subject12, 2022.
The Revolving Facility allows the Company to the satisfaction of certain conditions with respect to the Company’s outstanding convertible subordinated notes. The Company may use the remaining Senior Credit Facility for working capital, capital expendituresborrow, repay and other corporate purposes.
The Company is required to repay the Term Loan A Facility in quarterly installments in the amount of $10,000,000 per quarter, with a balloon payment of $300,000,000 at the end of thereborrow over its term. The Term Loan ARevolving Facility bearsprovides a sublimit for the issuance of letters of credit of up to $250.0 million at any one time. Borrowings under the Revolving Facility bear interest at a rate based on LIBORa benchmark rate defined in the credit agreement plus a margin that can vary from 0.85% to 1.40% or, at the Company’sCompany's option, the base rate, which is defined as the highest of (a) the Federal Funds Rate plus 1/2 of 1%0.5%, (b) the Bank of America prime rate and (c) one-month LIBOR plus in either case,1% plus a margin that varies as a function of the Company’s consolidated net lease adjusted leverage ratio that ranges between1.25% and 1.75% per annum if the Company electscan vary from 0.0% to use the LIBOR index and in the range of 0.25% to 0.75% per annum if the Company elects to use the base rate index. In December 2014, the Company utilized $110,740,000 of the Term Loan A Facility to repay the remaining principal of the U.S. term loan as well as fees and interest.

The Revolving Credit Facility allows the Company to borrow, repay and reborrow over the term. The Revolving Credit Facility provides a sublimit for the issuance of letters of credit of up to $150,000,000 at any one time.  Borrowings under the Revolving Credit Facility bear interest at a rate based on LIBOR or, at the Company’s option, the base rate, as defined above, plus, in either case, a margin that varies as a function of its consolidated net lease adjusted leverage ratio that ranges between 1.00% and 1.40% per annum if the Company elects to use the LIBOR index and in the range of 0.25% to 0.75% per annum if the Company elects to use the base rate index0.4%. The Company is required to pay a quarterly letter of credit fee on the face amount of each letter of credit, which fee is based on the same margin that applies from time to time to LIBOR-indexed borrowings under the revolving credit line.line. The Company is also required to pay a quarterly facility fee ranging from 0.25%0.15% to 0.35%0.30% per annum ofbased on the total revolving credit facility regardless of the amount utilized, which fee also varies as a function of our consolidated net lease adjusted leverage ratio. In December 2014, the outstanding letters of credit issued under the U.S. revolving credit line (see below) were assumed under the Revolving Credit Facility amount.
The Company borrowed £500.0 million and the U.S. revolving credit line was terminated.
First Amendment
On April 30, 2015, the Company, as borrower, and certain subsidiaries as guarantors entered into the first amendment (the “First Amendment”) to the Senior Credit Facility. The First Amendment provided for the conversion of the outstanding U.S. dollar-denominated borrowingsSEK2,800.0 million under the Term Loan A Facility into an approximately equivalent amount denominated in four foreign currencies. In connection with the execution of the First Amendment, on April 30, 2015 the Company repaid the U.S. dollar-denominated $490,000,000 remaining principal balance of the Term Loan A Facility and immediately reborrowed under the Term Loan A Facility in the aggregate principal amounts of CHF 47,780,000, €184,945,000, £92,586,000 and ¥11,924,000,000,December 12, 2017, or approximately $490,000,000 in U.S. dollars$997.1 million at the exchange rates in effect on April 30, 2015. The Company accounted for this transaction as a debt modification. Fees paid to third parties were expensed.
that date. The Company is required to repay the foreign-currency denominated borrowingsTerm Loan Facility at the rate of 5% of the original principal amount per annum with the remaining balance to be repaid in full at the maturity of the Senior Credit Facility. The Term Loan Facility bears interest at a rate based on LIBOR plus a margin that can vary from 1.00% to 1.70%. As of December 31, 2018, the Company had £481.3 million and SEK2,695.0 million, or approximately $916.7 million in U.S dollars at the exchange rates in effect as of December 31, 2018, outstanding under the Term Loan A Facility in equal quarterly installments on the last business daywith a weighted average effective interest rate of each March, June, September and December, commencing on June 30, 2015, equal1.85% per annum. Debt issuance costs related to the amount of 2.00% of the result of the respective Term Loan A Facility on April 30, 2015 divided by 0.98. The remaining principal amount will be paid on the maturity date of the Term Loan A Facility.Facility, net of amortization, were $2.3 million as of December 31, 2018.
Second AmendmentJPY Term Loan
On December 8, 2015,July 26, 2018, the Company as borrower, and certain subsidiaries as guarantors entered into an amendment to its Senior Credit Facility. The amendment provided for a senior unsecured term loan in an aggregate principal amount of ¥47.5 billion (the "JPY Term Loan"). The Company is required to repay the second amendment (the “Second Amendment”)JPY Term Loan at the rate of 5% of the original principal amount per annum with the remaining balance to be repaid in full at the maturity of the Senior Credit Facility. PursuantThe JPY Term Loan bears interest at a rate based on LIBOR plus a margin that can vary from 1.00% to 1.70% and contains customary covenants consistent with the Second Amendment, the RevolvingSenior Credit Facility was increased by $500,000,000 to $1,500,000,000 andFacility.
On July 31, 2018, the Company received commitments fromdrew down the lenders for a $250,000,000 seven year term loan (the “USDfull ¥47.5 billion of the JPY Term Loan, B Commitment”) and for a £300,000,000, or approximately $442,020,000 in U.S. dollars$424.7 million at the exchange rate in effecteffective on July 31, 2018, and prepaid the remaining principal of its existing Japanese Yen Term Loan of ¥43.8 billion or approximately $391.3 million. As of December 31, 2015, seven year term loan (the “Sterling2018, total outstanding borrowings under the JPY Term Loan B Commitment”, and collectively,were ¥46.9 billion, or approximately $427.8 million at the exchange rate effective on that date, with an effective interest rate of 1.74%. Debt issuance costs, net of amortization, related to the JPY Term Loan were $4.3 million as of December 31, 2018.

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the “Term Loan B Commitments”). On January 8, 2016, the Company borrowed the full amount of the $250,000,000 and £300,000,000 under the Term Loan B Commitment.
An original issue discount applied to borrowings under the Term Loan B Commitments. The original issue discount for borrowings under the USD Term Loan B Commitment was 0.25% of the principal. The original issue discount for borrowings under the Sterling Term Loan B Commitment was 0.50% of the principal. Funding of the Term Loan B will be net of the applicable original issue discount.
Loans made under the Term Loan B Commitments (the “Term Loan B”) must be repaid in equal quarterly installments of 0.25% of the original principal, with the remaining amount outstanding to be repaid in full on the seventh anniversary of the funding date of the Term Loan B. Once repaid, amounts borrowed under the Term Loan B Commitments may not be reborrowed.
Term Loan B made under the USD Term Loan B Commitment bear interest at a rate based on LIBOR or, at the Company’s option, the base rate, which is defined as the highest of (a) the Federal Funds Rate plus 1/2 of 1%, (b) the Bank of America prime rate and (c) one-month LIBOR, or 0.75% if LIBOR is less than 0.75%, plus a margin of 3.25%. Term Loan B made under the Sterling Term Loan B Commitment bear interest at a rate based on LIBOR, or 0.75% if LIBOR is less than 0.75%, plus a margin of 3.75%.
Third Amendment
On December 22, 2016, the Company, as borrower, and certain subsidiaries as guarantors, entered into the third amendment (the "Third Amendment") to the Senior Credit Facility. Pursuant to the Third Amendment, (i) the Company may borrow up to €1,000,000,000 in additional term B loan (the "Term B-2 Loan"), (ii) the interest rate margin applicable to the existing Term Loan B (the "Term Loan B-1 Facility") in US Dollars was reduced from 3.25% to 2.50% and the LIBOR floor applicable to such loans were reduced from 0.75% to zero and (iii) the interest rate margin applicable to the loans borrowed under the Term Loan B-1 Facility in Pounds Sterling was reduced from 3.75% to 3.00%, with no change to the existing LIBOR floor of 0.75% applicable to such loans. The Company accounted for this transaction as a debt modification.
On January 6, 2017, the Company borrowed the full amount of the Term B-2 Loan for €1,000,000,000, or approximately $1,059,800,000 in U.S dollars at the exchange rate in effect on January 6, 2017. The Term B-2 Loan will bear interest at an index rate based on EURIBOR plus a margin of 3.25%. No original issue discount is applicable to the Term B-2 Loan. The Term B-2 Loan must be repaid in equal quarterly installments of 0.25% of the original principal amount of the Term B-2 Loan starting in the second quarter of 2017, with the remaining amount outstanding to be repaid in full on the seventh anniversary of the funding date of the Term B-2 Loan.
Outstanding Borrowings
As of December 31, 2016, the Company had CHF 40,954,000, €158,525,000, £79,360,000 and ¥10,220,571,000, or approximately $392,238,000 in U.S dollars at exchange rates in effect as of December 31, 2016, outstanding under the Term Loan A Facility with a weighted average effective interest rate of 1.59% per annum. Debt issuance costs related to the Term Loan A, net of amortization, were $734,000 as of December 31, 2016. As of December 31, 2016, the Company had $248,125,000 and £297,750,000 outstanding term loan balances, or a total of approximately $614,745,000 at the exchange rate in effect on December 31, 2016, under the Term Loan B Commitments with a weighted average effective interest rate of 3.56% per annum. Debt issuance costs related to the Term Loan B, net of amortization were approximately $9,383,000 as of December, 31, 2016.
The Company commenced borrowing under the Revolving Credit Facility in late 2015. During 2015, the Company borrowed $245,000,000, of which $20,000,000 had been repaid as of December 31, 2015 and ¥12,094,000,000, or approximately $100,622,000 in U.S dollars at the exchange rate in effect on December 31, 2015. As of December 31, 2015, a total of $325,622,000 was outstanding under the Revolving Credit Facility with interest rates ranging from 1.25% to 1.60%. During the first quarter of 2016, the Company repaid $331,357,000 of the borrowings under the revolving credit facility at the exchange rate in effect on the repayment. No borrowings were outstanding under the revolving credit facility as of December 31, 2016.
Bridge Term Loan
In connection with its acquisition of Bit-isle, on September 30, 2015, the Company, acting through its Japanese subsidiaries as borrowers, entered into a term loan agreement (the “Bridge Term Loan”) with the Bank of Tokyo-Mitsubishi UFJ, Ltd. (“BTMU”). Pursuant to the Bridge Term Loan Agreement, BTMU committed to provide a senior bridge loan facility (the “Bridge Term Loan”)

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in the amount of up to ¥47,500,000,000, or approximately $395,200,000 in U.S dollars at the exchange rate in effect on December 31, 2015. Proceeds from the Bridge Term Loan were used exclusively for the acquisition of Bit-isle, the repayment of Bit-isle’s existing debt and transaction costs incurred in connection with the closing of the Bridge Term Loan and the acquisition of Bit-isle. Borrowings under the Bridge Term Loan bore interest at the Tokyo Interbank Offered Rate for Japanese Yen, plus a margin of 0.4% per annum for the first ten months following the first draw down. Thereafter, the margin increased to 1.75% per annum. The Company repaid the Bridge Term Loan at the end of its term on October 31, 2016.
Japanese Yen Term Loan
On September 30, 2016, the Company entered into a five year term loan agreement (the "Japanese Yen Term Loan") with BTMUMUFG for ¥47,500,000,000,¥47.5 billion, or approximately $468,350,000$468.4 million at the exchange rate in effect on September 30, 2016. Loans made under the Japanese Yen Term Loan must be repaid in equal quarterly installments of ¥625,000,000, with the remaining¥35,625,000,000 to be repaid in full on October 29, 2021. Borrowings under the Japanese Yen Term Loan bear interest at the Tokyo Interbank Offered Rate for Japanese Yen, plus a margin of 1.5% per annum.

In October 2016, the Company drew down the full amount of the Japanese Yen Term Loan of ¥47,500,000,000,¥47.5 billion, or approximately$453,150,000approximately $453.2 million at the exchange rate in effect on October 31, 2016, and repaid2016. On July 31, 2018, the Bridge Term Loan. Total outstanding borrowings underCompany prepaid the Term Loan Commitment were ¥47,500,000,000, or approximately $406,600,000 in U.S dollars at the exchange rate in effect asremaining principal of December 31, 2016. As of December 31, 2016, debt issuance cost, net of amortization, related to the Japanese Yen Term Loan was ¥1,094,395,000,of ¥43.8 billion or approximately $9,401,000 in U.S. dollars at$391.3 million using proceeds from the exchange rate in effect on December 31, 2016.

U.S. Financing
JPY Term Loan. In June 2012,connection with this prepayment of its existing Japanese Yen Term Loan, the Company entered into a credit agreement with a group of lenders for a $750,000,000 credit facility (the “U.S. Financing”), comprised of a $200,000,000 term loan facility (the “U.S. Term Loan”) and a $550,000,000 multicurrency revolving credit facility (the “U.S. Revolving Credit Line”). The U.S. Term Loan bore interest at a rate based on LIBOR or, at the option of the Company, the Base Rate (defined as the highest of (a) the Federal Funds Rate plus 1/2 of 1%, (b) the Bank of America prime rate and (c) one-month LIBOR plus 1.00%) plus, in either case, a margin that varies as a function of the Company’s senior leverage ratio in the range of 1.25%-2.00% per annum if the Company elects to use the LIBOR index and in the range of 0.25%-1.00% per annum if the Company elected to use the Base Rate index. In July 2012, the Company fully utilized the U.S. Term Loan and used the funds to prepay the outstanding balance of and terminate a multi-currency credit facility in the Company’s Asia-Pacific region. Borrowings under the U.S. Revolving Credit Line bore interest at a rate based on LIBOR or, at the option of the Company, the Base Rate (defined above) plus, in either case, a margin that varies as a function of the Company’s senior leverage ratio in the range of 0.95%-1.60% per annum if the Company elected to use the LIBOR index and in the range of 0.00%-0.60% per annum if the Company elected to use the Base Rate index. The Company was required to pay a quarterly letter of credit fee on the face amount of each letter of credit, which fee was based on the same margin that applies from time to time to LIBOR-indexed borrowings under the U.S. Revolving Credit Line. The Company was also required to pay a quarterly facility fee ranging from 0.30%-0.40% per annum of the U.S. Revolving Credit Line (regardless of the amount utilized), which fee also varied as a function of the Company’s senior leverage ratio.  In June 2012, the outstanding letters of credit issued under an existing revolving credit facility were replaced by the U.S. Revolving Credit Line and the existing revolving credit facility was terminated.
In December 2014, the Company paid down the remaining principal of U.S. Term Loan of $110,000,000 and replaced the U.S. Revolving Credit Line with the revolving credit facility (see above). As a result, Company recordedrecognized a loss on debt extinguishment of $2,534,000.
Brazil Financings
In November 2013, the Company completed a 60,318,000 Brazilian real borrowing agreement, or approximately $25,536,000 (the “2013 Brazil Financing”).  The 2013 Brazil Financing had a five-year term with semi-annual principal payments beginning in the third year of its term and semi-annual interest payments during its term.  The 2013 Brazil Financing bears an interest rate of 2.25% above the local borrowing rate. The 2013 Brazil Financing had a final maturity date of November 2018.
In June 2012, the Company completed a 100,000,000 Brazilian real borrowing agreement, or approximately $48,807,000 (the “2012 Brazil Financing”). The 2012 Brazil Financing had a five-year term with semi-annual principal payments beginning in the third year of its term and quarterly interest payments during its term. The 2012 Brazil Financing bears an interest rate of 2.75% above the local borrowing rate. The 2012 Brazil Financing had a final maturity date of June 2017.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



In June 2016, the Company prepaid and terminated its 2012 and 2013 Brazil financings. In connection with this prepayment, the Company paid 90,652,000 Brazilian Reals including principal, accrued interest and termination fees, or approximately $28,298,000 at the exchange rate in effect as of June 30, 2016. The loss on debt extinguishment recognized in the consolidated statements of operations was insignificant.

$2.2 million.
Mortgage Payable
In October 2013, as a result of the Frankfurt Kleyer 90 Carrier Hotel Acquisition, the Company assumed a mortgage payable of $42,906,000$42.9 million with an effective interest rate of 4.25%. The mortgage payable has monthly principal and interest payments and has an expiration date of August 2022.
Convertible Debt
The Company’s convertible debt consisted of the following as of December 31 (in thousands):
 2016 2015
4.75% Convertible Subordinated Notes$
 $150,082
Less amount representing debt discount and debt issuance cost
 (3,961)
 $
 $146,121
3.00% Convertible Subordinated Notes
In September 2007, the Company issued $395,986,000 aggregate principal amount of 3.00% Convertible Subordinated Notes due October 15, 2014 (the “3.00% Convertible Subordinated Notes”). Interest was payable semi-annually on April 15 and October 15 of each year and commenced April 15, 2008.
In June 2014, the Company entered into an agreement with a note holder to exchange an aggregate of $217,199,000 of the principal amount of the 3.00% Convertible Subordinated Notes for 1,948,578 shares of the Company’s common stock and $5,387,000 in cash, comprised of accrued interest and a premium. As a result, the Company recognized a loss on debt extinguishment of $4,210,000 during the three months ended June 30, 2014 in its consolidated statement of operations. In the Company’s consolidated statement of cash flows for the year ended December 31, 2014, the premium paid was included within net cash provided by financing activities and the accrued interest paid was included within net cash provided by operating activities.
In October 2014, upon maturity the Company settled with the remaining holders of 3.00% Convertible Subordinated Notes. The conversion rate was adjusted to 8.9264 per $1,000 principal amount of 3.00% convertible notes. Approximately $178,741,000 in aggregate principal amount of the 3.00% Convertible Subordinated Notes was converted into 1,595,496 shares of common stock. The remaining 3.00% Convertible Subordinated Notes, plus accrued interest, were settled in cash.
4.75% Convertible Subordinated Notes
In June 2009, the Company issued $373,750,000$373.8 million aggregate principal amount of 4.75% Convertible Subordinated Notes due June 15, 2016 (the “4.75%"4.75% Convertible Subordinated Notes”Notes"). Interest was payable semi-annually on June 15In 2014 and December 15 of each year and commenced on December 15, 2009.
In May and June 2014,2015, certain holders of the 4.75% Convertible Subordinated Notes elected to convert a total of $215,830,000$223.7 million of the principal amount of the notes for 2,411,8512,513,798 shares of the Company’sCompany's common stock and $51,671,000$51.7 million in cash, comprised of accrued interest, premium and cash paid in lieu of issuing shares for certain note holders’holders' principal amount. As a result, the Company recognized a loss on debt extinguishment of $46,973,000 for the year ended December 31, 2014 in its consolidated statement of operations. The loss on debt extinguishment included the premium paid and the excess of the fair value of liability component of the 4.75% Convertible Subordinated Notes over its carrying amount, including debt discount and unamortized debt issuance costs, in accordance with the accounting standard for convertible debt instruments that may be settled in cash upon conversion (including partial cash settlement). In the Company’s consolidated statement of cash flows for the year ended December 31, 2014, the premium and cash paid in lieu of issuing shares to settle a portion of the principal amount were included within net cash provided by financing activities and the accrued interest paid was included within net cash provided by operating activities.

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In December 2015,April and June 2016, certain holders of the 4.75% Convertible Subordinated Notes elected to convert a total of $7,803,000 of the principal amount of the notes at a conversion rate of 13.0655 shares of the Company’s common stock per $1,000 principal amount of the notes. The Company issued a total 101,947 shares of its common stock and paid approximately $1,000 in cash for residual shares in connection with the conversions. The Company recorded a $289,000 loss on debt extinguishment as a result of the conversions.
In April and June 2016, holders of the 4.75% convertible subordinated notes converted or redeemed a total of $150,082,000$150.1 million of the principal amount of the notes for 1,981,662 shares of the Company’sCompany's common stock and $3,619,000$3.6 million in cash, comprised of accrued interest, cash paid in lieu of fractional shares and principal redemption. In the Company’sCompany's consolidated statement of cash flows for the year ended December 31, 2016, the principal redemption and cash paid in lieu of issuing fractional shares to settle a portion of the principal amount were included within net cash provided by (used in) financing activities and the accrued interest paid was included within net cash provided by operating activities.

Issuance and transaction costs incurred at the time of the issuance of the 4.75% Convertible Subordinated Notes with third parties are allocated to the liability and equity components and accounted for as debt issuance costs and equity issuance costs, respectively. The 4.75% Convertible Subordinated Notes consisted of the following as of December 31 (in thousands):
 2016 2015
Equity component (1)
$
 $42,091
Liability component:   
Principal$
 $150,082
Less debt discount and debt issuance costs, net (2)

 (3,961)
Net carrying amount$
 $146,121
__________________________
(1)Included in the consolidated balance sheets within additional paid-in capital.
(2)Included in the consolidated balance sheets within convertible debt and is amortized over the remaining life of the 4.75% Convertible Subordinated Notes.
The following table sets forth total interest expense recognized related to the 4.75% Convertible Subordinated Notes for the yearsyear ended December 31 (in thousands):
2016 20152016
Contractual interest expense$3,267
 $7,501
$3,267
Amortization of debt issuance costs186
 428
186
Amortization of debt discount3,775
 8,060
3,775
$7,228
 $15,989
$7,228
Effective interest rate of the liability component10.48% 10.65%10.48%
To minimize the impact of potential dilution upon conversion of the 4.75% Convertible Subordinated Notes, the Company entered into capped call transactions ("the Capped(the "Capped Call") separate from the issuance of the 4.75% Convertible Subordinated Notes and paid a premium of $49,664,000$49.7 million for the Capped Call in 2009. The Capped Call covers a total of approximately 4,432,638 shares of the Company’sCompany's common stock, subject to adjustment.
Upon maturity of the 4.75% convertible subordinated notesConvertible Subordinated Notes on June 15, 2016, the Company settled the capped call transaction and received 380,779 shares of common stock, which were placed in treasury and resulted in a credit of $141,688,000$141.7 million to additional paid inpaid-in capital at the market price of $372.10 on June 15, 2016.


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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Senior Notes
The Company’sCompany's senior notes consisted of the following as of December 31 (in thousands):
2016 2015 2018 2017
Senior Notes Issuance Date Maturity Date Amount Effective Rate Amount Effective Rate
5.000% Infomart Senior Notes April 2018 April 2019 - April 2021 $750,000
 4.40% $
 %
5.375% Senior Notes due 2022 November 2014 January 2022 750,000
 5.56% 750,000
 5.56%
5.375% Senior Notes due 2023$1,000,000
 $1,000,000
 March 2013 April 2023 1,000,000
 5.51% 1,000,000
 5.51%
5.375% Senior Notes due 2022750,000
 750,000
4.875% Senior Notes due 2020500,000
 500,000
5.75% Senior Notes due 2025500,000
 500,000
2.875% Euro Senior Notes due 2024 March 2018 March 2024 859,125
 3.08% 
 %
5.750% Senior Notes due 2025 November 2014 January 2025 500,000
 5.88% 500,000
 5.88%
2.875% Euro Senior Notes due 2025 September 2017 October 2025 1,145,500
 3.04% 1,201,000
 3.04%
5.875% Senior Notes due 20261,100,000
 1,100,000
 December 2015 January 2026 1,100,000
 6.03% 1,100,000
 6.03%
2.875% Euro Senior Notes due 2026 December 2017 February 2026 1,145,500
 3.04% 1,201,000
 3.04%
5.375% Senior Notes due 2027 March 2017 May 2027 1,250,000
 5.51% 1,250,000
 5.51%
3,850,000
 3,850,000
 8,500,125
   7,002,000
  
Less amount representing debt issuance cost(39,230) (45,366)
Less amount representing unamortized debt issuance costLess amount representing unamortized debt issuance cost (75,372)   (78,151)  
Add amount representing unamortized debt premiumAdd amount representing unamortized debt premium 5,031
   
  
$3,810,770
 $3,804,634
 8,429,784
   6,923,849
  
Less current portion (300,999)   
  
 $8,128,785
   $6,923,849
  
2022 Senior Notes and 20255.000% Infomart Senior Notes
In November 2014,On April 2, 2018, in connection with the closing of the Infomart Dallas Acquisition, the Company issued $750,000,000$750.0 million aggregate principal amount of 5.375%5.000% senior unsecured notes in five new series due January 1, 2022,in each of April 2019, October 2019, April 2020, October 2020 and $500,000,000April 2021, with each series consisting of $150.0 million principal amount. The 5.000% Infomart Senior Notes were fair valued as of the acquisition date and the Company recognized debt premium of $8.2 million. Interest on the notes is payable semi-annually on April 2 and October 2 of each year, commencing on October 2, 2018. The 5.000% Infomart Senior Notes are not redeemable prior to their maturity dates.
2.875% Euro Senior Notes due 2024
On March 14, 2018, the Company issued €750.0 million, or approximately $929.9 million in U.S. dollars, at the exchange rate in effect on March 14, 2018, aggregate principal amount of 5.750%2.875% senior notes due January 1, 2025, which are referred to as the “2022 Senior Notes” and “2025 Senior Notes”, respectively, and collectively, as the “2022 and 2025 Senior Notes”.March 15, 2024. Interest on each series of the notes is payable semi-annually in arrears on January 1March 15 and July 1September 15 of each year, commencing on July 1, 2015.
The 2022 and 2025September 15, 2018. Debt issuance costs related to the 2.875% Euro Senior Notes due 2024 were $11.6 million.
All senior notes are unsecured and rank equal in right of payment to the Company’sCompany's existing or future senior indebtedness and senior in right of payment to the Company’sCompany's existing and future subordinated indebtedness. The 2022 and 2025 Senior Notes are effectively subordinated to all of the existing and future secured debt, including debt outstanding under any bank facility or secured by any mortgage, to the extent of the assets securing such debt. They are also structurally subordinated to any existing and future indebtedness and other liabilities (including trade payables) of any of the Company’s subsidiaries.
The 2022 and 2025 Senior Notes are governed by an indenture between the Company and U.S. Bank National Association, as trustee. The indenture contains covenants that limit the Company’s ability and the ability of its subsidiaries to, among other things:
incur additional debt;
pay dividends or make other restricted payments;
purchase, redeem or retire capital stock or subordinated debt;
make asset sales;
enter into transactions with affiliates;
incur liens;
enter into sale-leaseback transactions;
provide subsidiary guarantees;
make investments; and
merge or consolidate with any other person.
Subject to compliance with the limitations described above, the Company may issue an unlimited principal amount of additional notes at later dates under the same indenture as the 2022 and 2025 Senior Notes. Any additional notes the Company issues under the indenture will be identical in all respects to the 2022 and 2025 Senior Notes except that the additional notes will have different issuance dates and may have different issuance prices.
The Company is not required to make any mandatory redemption with respect to the 2022 and 2025 Senior Notes, however under certain circumstances as specified in the restrictions described above, the Company may be required to offer to purchase the 2022 and 2025 Senior Notes.
At any time prior to January 1, 2018, the Company may on any one or more occasions redeem up to 35% of the aggregate principal amount of the 2022 Senior Notes (calculated giving effect to any issuance of additional notes of such series) outstanding under the 2022 Senior Notes indenture, at a redemption price equal to 105.375% of the principal amount of the notes to be redeemed,

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



plus accrued and unpaid interest to, but not including, the redemption date, with the net cash proceeds of one or more equity offerings, provided that (i) at least 65% of the aggregate principal amount of the 2022 Senior Notes issued under the 2022 indenture remains outstanding immediately after the occurrence of such redemption (excluding 2022 Senior Notes held by the Company and its subsidiaries) and (ii) the redemption must occur within 90 days of the date of the closing of such equity offerings.
On or after January 1, 2018, the Company may redeem all or a part of the 2022 Senior Notes, on any one or more occasions, at the redemption prices (expressed as percentages of principal amount) set forth below plus accrued and unpaid interest thereon, if any, to, but not including, the applicable redemption date, if redeemed during the twelve-month period beginning January 1 of the years indicated below:
 Redemption Price of the 2022 Notes
2018104.031%
2019102.688%
2020101.344%
2021 and thereafter100.000%
In addition, at any time prior to January 1, 2018, the Company may redeem all or a part of the 2022 Senior Notes at a redemption price equal to 100% of the principal amount of 2022 Senior Notes redeemed plus the applicable premium (the “2022 Senior Notes Applicable Premium”) as of, and accrued and unpaid interest, if any, to, but not including, the date of the redemption, subject to the rights of the holders of record of 2022 Senior Notes on the relevant record date to receive interest due on the relevant interest payment date. The 2022 Senior Notes Applicable Premium means the greater of:
1.0% of the principal amount of the 2022 Senior Notes;
the excess of: (a) the present value at such redemption date of (i) the redemption price of the 2022 Senior Notes at January 1, 2018 (such redemption price being set forth in the table as shown in the above table ), plus (ii) all required interest payments due on the 2022 Senior Notes through January 1, 2018 (excluding accrued but unpaid interest, if any, to, but not including the, the redemption date,) computed using a discount rate equal to the treasury rate as of such redemption date plus 0.5 basis points; and
the principal amount of the 2022 Senior Notes.
At any time prior to January 1, 2018, the Company may on any one or more occasions redeem up to 35% of the aggregate principal amount of the 2025 Senior Notes (calculated giving effect to any issuance of additional notes of such series) outstanding under the 2025 Senior Notes indenture, at a redemption price equal to 105.750% of the principal amount of the 2025 Senior Notes to be redeemed, plus accrued and unpaid interest to, but not including, the redemption date, with the net cash proceeds of one or more equity offerings; provided that (1) at least 65% of the aggregate principal amount of the 2025 Senior Notes issued under the 2025 Senior Notes indenture remains outstanding immediately after the occurrence of such redemption (excluding 2025 Senior Notes held by the Company and its subsidiaries); and (2) the redemption must occur within 90 days of the date of the closing of such equity offering.
On or afterJanuary 1, 2020, the Company may redeem all or a part of the 2025 Senior Notes, on any one or more occasions, at the redemption prices (expressed as percentages of principal amount) set forth below plus accrued and unpaid interest thereon, if any, to, but not including, the applicable redemption date, if redeemed during the twelve-month period beginning January 1 of the years indicated below:
 
Redemption Price
 of the 2025 Notes
2020102.875%
2021101.917%
2022100.958%
2023 and thereafter100.000%

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EQUINIX, INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



In addition, at any time prior to January 1, 2020, the Company may also redeem all or a part of the 2025 Senior Notes at a redemption price equal to 100% of the principal amount of 2025 Senior Notes redeemed plus the applicable premium (the “2025 Senior Notes Applicable Premium”) as of, and accrued and unpaid interest, if any, to, but not including, the redemption date, subject to the rights of holders of record of 2025 Senior Notes on the relevant record date to receive interest due on the relevant interest payment date. The 2025 Senior Notes Applicable Premium means the greater of:
1.0% of the principal amount of the 2025 Senior Notes;
the excess of: (a) the present value at such redemption date of (i) the redemption price of the 2025 Senior Notes at January 1, 2020 (such redemption price being set forth in the table as shown in the above table ), plus (ii) all required interest payments due on the 2025 Senior Notes through January 1, 2020 (excluding accrued but unpaid interest, if any, to, but not including the, the redemption date,) computed using a discount rate equal to the treasury rate as of such redemption date plus 0.5 basis points; and
the principal amount of the 2025 Senior Notes.
As of December 31, 2016 and 2015, debt issuance costs related to the 2022 and 2025 Senior Notes, net of amortization, were $12,532,000 and $14,622,000, respectively.
2026 Senior Notes
In December 2015, the Company issued $1,100,000,000 aggregate principal amount of 5.875% of additional senior notes due January 15, 2026, which are referred to as the “2026 Senior Notes”. Interest on the senior notes is payablepaid semi-annually in arrears on January 15 and July 15 of each year, commencing on July 15, 2016.
The 2026 Senior Notes are unsecured and rank equal in right of payment to the Company’s existing or future senior indebtedness and senior in right of payment to the Company’s existing and future subordinated indebtedness.arrears. The senior notes are effectively subordinated to all of the existing and future secured debt, including debt outstanding under any bank facility or secured by any mortgage, to the extent of the assets securing such debt. They are also structurally subordinated to any existing and future indebtedness and other liabilities (including trade payables) of any of the Company’sCompany's subsidiaries.
The 2026 Senior Notes areEach series of senior notes is governed by a supplemental indenture to the indenture between the Company and U.S. Bank National Association, as trustee, that governs the Company’s 2022 and 2025 Senior Notes. Thetrustee. These supplemental indenture containsindentures contain covenants that limit the Company’sCompany's ability and the ability of its subsidiaries to, among other things:things(1):
incur additional debt;
pay dividends or make other restricted payments;
purchase, redeem or retire capital stock or subordinated debt;
make asset sales;
enter into transactions with affiliates;
incur liens;
enter into sale-leaseback transactions;
provide subsidiary guarantees;
make investments; and
merge or consolidate with any other person.
The 2026 Senior Notes provided for a special mandatory redemption if the TelecityGroup acquisition was not completed on or prior to November 29, 2016, or if, prior to such date, the TelecityGroup offer had lapsed or been withdrawn for the purposes of the UK City Code on Takeovers and Mergers. In either case, the Company would have been required to redeem all of the 2026 Senior Notes at a redemption price equal to 100% of the principal amount of the notes, plus accrued and unpaid interest to, but excluding, the redemption date. The acquisition of TelecityGroup closed on January 15, 2016. As a result, the Company is no longer subject to a mandatory redemption of the 2026 Senior Notes.
The 2026 Senior Notes also provide for optional redemption. At any time prior to January 15, 2019, the Company may on any one or more occasions redeem up to 35% of the aggregate principal amount of the 2026 Senior Notes (calculated giving effect to any issuance of additional notes of such series) outstanding under the 2026 Senior Notes indenture, at a redemption price equal to 105.875% of the principal amount of the notes to be redeemed, plus accrued and unpaid interest to, but not including, the redemption date, with the net cash proceeds of one or more equity offerings, provided that (i) at least 65% of the aggregate principal amount of the 2026 Senior Notes (calculated giving effect to any issuance of additional notes) issued under the 2026 indenture

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



incur liens(2);
enter into sale-leaseback transactions(2);
provide subsidiary guarantees;
make investments; and
merge or consolidate with any other person(2).
(1)
If the senior notes are rated investment grade at any time by two or more of Standard & Poor's, Moody's and Fitch, most of the restrictive covenants contained in the supplemental indentures will be suspended.
(2)
The supplemental indentures for the 5.000% Infomart Senior Notes, 2.875% Euro Senior Notes due 2024 and 2.875% Euro Senior Notes due 2026 only contain these covenants footnoted with (2).

Subject to compliance with the limitations described above, the Company may issue an unlimited principal amount of additional notes at later dates under the same indenture as the senior notes. Any additional notes the Company issues under the indenture will be identical in all respects to the terms of the 5.000% Infomart Senior Notes, 2.875% Euro Senior Notes due 2024 and 2.875% Euro Senior Notes due 2026, except that the additional notes will have different issuance dates and may have different issuance prices.
The Company is not required to make any mandatory redemption with respect to the senior notes; however, upon the event of a change in control, the Company may be required to offer to purchase the senior notes.
Optional Redemption Schedule
Senior Note DescriptionEarly Equity Redemption PriceFirst Scheduled Redemption DateFirst Scheduled Redemption PriceSecond Year Redemption PriceThird Year Redemption Price
Fourth Year
(if scheduled) Redemption Price
5.375% Senior Notes due 2022105.375%January 1, 2018104.031%102.688%101.344%100.000%
5.375% Senior Notes due 2023105.375%April 1, 2018102.688%101.792%100.896%100.000%
2.875% Euro Senior Notes due 2024102.875%September 15, 2020101.438%100.719%100.000% 
5.750% Senior Notes due 2025105.750%January 1, 2020102.875%101.917%100.958%100.000%
2.875% Euro Senior Notes due 2025102.875%October 1, 2020101.438%100.719%100.000% 
5.875% Senior Notes due 2026105.875%January 15, 2021102.938%101.958%100.979%100.000%
2.875% Euro Senior Notes due 2026102.875%February 1, 2021101.438%100.719%100.000% 
5.375% Senior Notes due 2027105.375%May 15, 2022102.688%101.792%100.896%100.000%
Each series of senior notes provides for optional redemption, with the exception of 5.000% Infomart Senior Notes. Within 90 days of the closing of one or more equity offerings and at any time prior to the first scheduled redemption date listed in the Optional Redemption Schedule, the Company may redeem up to 35% of the aggregate principal amount of any series of senior notes outstanding, at the respective early equity redemption price listed in the Optional Redemption Schedule, plus accrued and unpaid interest to the redemption date, provided that at least 65% of the aggregate principal amount of the senior notes issued in such series remains outstanding immediately after the occurrence of such redemption and (ii) the redemption must occur within 90 days of the date of the closing of such equity offerings.redemption(s).
On or after January 15, 2021,the first scheduled redemption date listed in the Optional Redemption Schedule, the Company may redeem all or a part of the 2026 Senior Notes,a series of senior notes, on any one or more occasions, at the redemption prices (expressed as percentages of principal amount) set forth belowin the Optional Redemption Schedule, plus accrued and unpaid interest thereon, if any, to, but not including, the applicable redemption date, if redeemed during the twelve-month period beginning January 15on the first scheduled redemption date and at reduced scheduled redemption prices during the twelve or eighteen-month periods beginning on the anniversaries of the years indicated below:
 Redemption Price of the 2026 Notes
2021102.938%
2022101.958%
2023100.979%
2024 and thereafter100.000%
first scheduled redemption date.
In addition, at any time prior to January 15, 2021,the first scheduled redemption date, the Company may redeem all or a part of the 2026 Senior Notesany series of senior notes at a redemption price equal to 100% of the principal amount of 2026 Senior Notessuch senior notes redeemed plus the applicable premium (the “2026 Senior Notes Applicable Premium”"Applicable Premium") as of, and accrued and unpaid interest, if any, to, but not including, the date of the redemption, subject to the rights of the holders of record of 2026 Senior Notessuch senior notes on the relevant record date to receive interest due on the relevant interest payment date. The 2026 Senior Notes Applicable Premium means the greater of:
1.0% of the principal amount of the 2026 Senior Notes;
the excess of: (a) the present value at such redemption date of (i) the redemption price of the 2026 Senior Notes at January 15, 2021 (such redemption price being set forth in the table as shown in the above table ), plus (ii) all required interest payments due on the 2026 Senior Notes through January 15, 2021 (excluding accrued but unpaid interest, if any, to, but not including the, the redemption date,) computed using a discount rate equal to the treasury rate as of such redemption date plus 0.5 basis points; over (b) the principal amount of the 2026 Senior Notes, if greater.
As of December 31, 2016 and 2015, debt issuance costs related to the 2026 Senior Notes, net of amortization, were $15,112,000 and $16,879,000, respectively.
2020 Senior Notes and 2023 Senior Notes
In March 2013, the Company issued $1,500,000,000 aggregate principal amount of senior notes, which consist of $500,000,000 aggregate principal amount of 4.875% senior notes due April 1, 2020 (the “2020 Senior Notes”) and $1,000,000,000 aggregate principal amount of 5.375% senior notes due April 1, 2023 (the “2023 Senior Notes”). Interest on both the 2020 Senior Notes and the 2023 Senior Notes is payable semi-annually on April 1 and October 1 of each year and commenced on October 1, 2013.
The 2020 Senior Notes and the 2023 Senior Notes are governed by separate indentures dated March 5, 2013, between the Company, as issuer, and U.S. Bank National Association, as trustee (the “Senior Notes Indentures”). The Senior Notes Indentures contain covenants that limit the Company’s ability and the ability of its subsidiaries to, among other things:
incur additional debt;
pay dividends or make other restricted payments;
purchase, redeem or retire capital stock or subordinated debt;
make asset sales;
enter into transactions with affiliates;
incur liens;
enter into sale-leaseback transactions;
provide subsidiary guarantees;
make investments; and
merge or consolidate with any other person.
(1)1.0% of the principal amount of the senior notes;

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(2)the excess of:
Each of these restrictions has a number of important qualifications and exceptions. The 2020 Senior Notes and the 2023 Senior Notes are unsecured and rank equal in right of payment with the Company’s existing or future senior unsecured debt and senior in right of payment with the Company’s existing and future subordinated debt. The 2020 Senior Notes and the 2023 Senior Notes are junior to the Company’s secured indebtedness and guaranteed indebtedness of its subsidiaries.
At any time prior to April 1, 2016, the Company may on any one or more occasions redeem up to 35% of the aggregate principal amount of the 2020 Senior Notes outstanding at a redemption price equal to 104.875% of the principal amount of the 2020 Senior Notes to be redeemed, plus accrued and unpaid interest to, but not including, the redemption date, with the net cash proceeds of one or more equity offerings; provided that (i) at least 65% of the aggregate principal amount of the 2020 Senior Notes issued under the 2020 Senior Notes indenture remains outstanding immediately after the occurrence of such redemption (excluding the 2020 Senior Notes held by the Company and its subsidiaries); and (ii) the redemption must occur within 90 days of the date of the closing of such equity offering.
On or after April 1, 2017, the Company may redeem all or a part of the 2020 Senior Notes, on any one or more occasions, at the redemption prices (expressed as percentages of principal amount) set forth below plus accrued and unpaid interest thereon, if any, to, but not including, the applicable redemption date, if redeemed during the twelve-month period beginning on April 1 of the years indicated below:
 
Redemption Price of
 the 2020 Senior Notes
2018102.438%
2019101.219%
2020 and thereafter100.000%
At any time prior to April 1, 2017, the Company may also redeem all or a part of the 2020 Senior Notes at a redemption price equal to 100% of the principal amount of the 2020 Senior Notes redeemed plus an applicable premium (the “2020 Senior Notes Applicable Premium”), and accrued and unpaid interest, if any, to, but not including, the date of redemption (the “2020 Senior Notes Redemption Date”). The 2020 Senior Notes Applicable Premium means the greater of:
1.0% of the principal amount of the 2020 Senior Notes; and
the excess of: (a)the present value at such redemption date of (i) the redemption price of the 2020 Senior Notessenior notes at April 1, 2017 as shown in the above table,first scheduled redemption date, plus (ii) all required interest payments due on the 2020 Senior Notessenior notes through April 1, 2017 (excluding accrued but unpaid interest, if any, to, but not including the 2020 Senior Notes Redemption Date),first scheduled redemption date computed using a discount rate equal to the yield to maturitytreasury rate as of the U.S. Treasury securities with a constant maturity most nearly equal to the period from the 2020 Senior Notes Redemption Date to April 1, 2017,such redemption date plus 0.50%;50 basis points; over
(b)the principal amount of the 2020 Senior Notes.
At any time prior to April 1, 2016, the Company may on any one or more occasions redeem up to 35% of the aggregate principal amount of the 2023 Senior Notes outstanding at a redemption price equal to 105.375% of the principal amount of the 2023 Senior Notes to be redeemed, plus accrued and unpaid interest to, but not including, the redemption date, with the net cash proceeds of one or more equity offerings; provided that (i) at least 65% of the aggregate principal amount of the 2023 Senior Notes issued under the 2023 Senior Notes indenture remains outstanding immediately after the occurrence of such redemption (excluding the 2023 Senior Notes held by the Company and its subsidiaries); and (ii) the redemption must occur within 90 days of the date of the closing of such equity offering.
On or after April 1, 2018, the Company may redeem all or a part of the 2023 Senior Notes, on any one or more occasions, at the redemption prices (expressed as percentages of principal amount) set forth below plus accrued and unpaid interest thereon, if any, to, but not including, the applicable redemption date, if redeemed during the twelve-month period beginning on April 1 of the years indicated below:

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 Redemption Price of the 2023 Senior Notes
2018102.688%
2019101.792%
2020100.896%
2021 and thereafter100.000%
At any time prior to April 1, 2018, the Company may also redeem all or a part of the 2023 Senior Notes at a redemption price equal to 100% of the principal amount of the 2023 Senior Notes redeemed plus an applicable premium (the “2023 Senior Notes Applicable Premium”), and accrued and unpaid interest, if any, to, but not including, the date of redemption (the “2023 Senior Notes Redemption Date”). The 2023 Senior Notes Applicable Premium means the greater of:
1.0% of the principal amount of the 2023 Senior Notes; and
the excess of: (a) the present value at such redemption date of (i) the redemption price of the 2023 Senior Notes at April 1, 2018 as shown in the above table, plus (ii) all required interest payments due on the 2023 Senior Notes through April 1, 2018 (excluding accrued but unpaid interest, if any, to, but not including the 2023 Senior Notes Redemption Date), computed using a discount rate equal to the yield to maturity of the U.S. Treasury securities with a constant maturity most nearly equal to the period from the 2023 Senior Notes Redemption Date to April 1, 2018, plus 0.50%; over (b) the principal amount of the 2023 Senior Notes.
Debt issuance costs related to the 2020 Senior Notes and 2023 Senior Notes, net of amortization, were $11,585,000 and $13,865,000 as of December 31, 2016 and 2015, respectively.
7.00% Senior Notes
In July 2011, the Company issued $750,000,000 aggregate principal amount of 7.00% Senior Notes due July 15, 2021 (the “7.00% Senior Notes”). Interest was payable semi-annually in arrears on January 15 and July 15 of each year and commenced on January 15, 2012. The indenture governing the 7.00% senior notes permitted the Company to redeem the 7.00% senior notes at the redemption prices set forth in the 7.00% senior notes indenture plus accrued and unpaid interest to, but not including the redemption price.notes.
In December 2014, the Company redeemed the 7.00% Senior Notes and paid $866,861,000 in cash including the principal amount of $750,000,000 plus a premium of $93,965,000 and accrued and unpaid interest of $22,896,000. During the three months of December 31, 2014, the Company recognized a loss on debt extinguishment of $103,273,000, including the unamortized debt issuance costs and the redemption premium.
Loss on Debt Extinguishment
During the year ended December 31, 2018, the Company recorded $51.4 million of loss on debt extinguishment comprised of (i) $17.1 million of loss on debt extinguishment as a result of amendments to leases impacting the related financing obligations, (ii) $19.5 million of loss on debt extinguishment from the settlement of financing obligations as a result of the Infomart Dallas Acquisition, (iii) $12.6 million of loss on debt extinguishment as a result of the settlement of financing obligations for properties purchased and (iv) $2.2 million of loss on debt extinguishment as a result of the redemption of the Japanese Yen Term Loan.
During the year ended December 31, 2017, the Company recorded $65.8 million of loss on debt extinguishment comprised of (i) $14.6 million of loss on debt extinguishment from the redemption of senior notes, which included $12.2 million redemption premium that was paid in cash and $2.4 million related to the write-off of unamortized debt issuance costs, (ii) $22.5 million of loss on debt extinguishment from the redemption of term loans under the previously outstanding credit facility, (iii) $16.7 million of loss on debt extinguishment as a result of amendments to leases and financing obligations and (iv) $12.0 million of loss on debt extinguishment from the settlement of financing obligations as a result of properties purchased.
During the year ended December 31, 2016, the Company recorded $12.3 million of $12,276,000 loss on debt extinguishment as a result of (i) the settlement of the financing obligations for Paris 3 IBX data center, (ii) a portion of the lender fees associated with the Japanese Yen Term Loan and (iii) the prepayment and terminations of the 2012 and 2013 Brazil financings.
During the year ended December 31, 2015, the Company recorded $289,000 of loss on debt extinguishment as a result of the conversions of the 4.75% Convertible Subordinated Notes.
During the year ended December 31, 2014, the Company recorded $156,990,000 of loss on debt extinguishment comprised of (i) $103,273,000 of loss on debt extinguishment from the redemption of the 7.00% Senior Notes, which included the $93,965,000 redemption premium that was paid in cash and $9,307,000 related to the write-off of unamortized debt issuance costs, (ii) $51,183,000 related to the exchanges of the 3.00% Convertible Subordinated Notes and 4.75% Convertible Subordinated Notes and (iii) $2,534,000 as a result of the prepayment and termination of the U.S. Term Loan and the U.S. Revolving Credit Line.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Maturities of Debt FacilitiesInstruments
The following table sets forth maturities of the Company’sCompany's debt, including mortgage and loans payable, and senior notes, gross of debt issuance costs, debt discounts and debt discounts,premiums, as of December 31, 20162018 (in thousands):
Years ending:  
2017$67,928
201868,013
2019348,271
$373,128
2020530,836
373,443
2021330,530
223,134
20221,915,871
20231,002,491
Thereafter3,964,248
6,002,464
$5,309,826
$9,890,531
Fair Value of Debt FacilitiesInstruments
The following table sets forth the estimated fair values of the Company’sCompany's mortgage and loans payable convertible debt,and senior notes and revolving credit line, including current maturities, as of December 31 (in thousands):
2016 20152018 2017
Mortgage and loans payable$1,461,954
 $916,602
$1,389,632
 $1,464,877
Convertible debt
 151,997
Senior notes4,033,985
 3,954,000
8,422,211
 7,288,673
Revolving credit facility
 325,617
The fair valuevalues of the mortgage and loans payable and convertible debt,5.000% Infomart Senior Notes, which were not publicly traded, waswere estimated by considering the Company’sCompany's credit rating, current rates available to the Company for debt of the same remaining maturities and terms of the debt (level 2). The fair value of the senior notes, which were traded in the public debt market, was based on quoted market prices (level 1).

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Interest Charges
The following table sets forth total interest costs incurred and total interest costs capitalized for the years ended December 31 (in thousands):
 2016 2015 2014
Interest expense$392,156
 $299,055
 $270,553
Interest capitalized13,338
 10,943
 19,004
Interest charges incurred$405,494
 $309,998
 $289,557
11.    Redeemable Non-Controlling Interests
In July 2014, the Company and Riverwood entered into a purchase and sale agreement in which the Company acquired Riverwood’s interest in ALOG and approximate 10% of ALOG owned by ALOG management, which resulted in the Company owning 100% of ALOG (See Note 2). The Company did not have redeemable non-controlling interests as of December 31, 2015 and 2016.
The following table provides a summary of the activities of the Company’s redeemable non-controlling interests (in thousands):

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



 2018 2017 2016
Interest expense$521,494
 $478,698
 $392,156
Interest capitalized19,880
 22,625
 13,338
Interest charges incurred (1)
$541,374
 $501,323
 $405,494
Balance as of December 31, 2013$123,902
Net loss attributable to redeemable non-controlling interest(1,179)
Other comprehensive income attributable to redeemable non-controlling interests1,810
Increase in redemption value of non-controlling interests90,913
Impact of foreign currency translation1,724
Exercise of vested and outstanding ALOG stock options8,459
Purchase price of redeemable non-controlling interests(225,629)
Balances as of December 31, 2014$
(1)
Interest charges incurred for the year ended December 31, 2017 and 2016 also include interest expense incurred under the previously outstanding credit facility the Company entered in 2014, which was terminated in December 2017.
Total interest paid, net of capitalized interest, during the years ended December 31, 2018, 2017 and 2016 was $476.9 million, $422.2 million and $336.7 million, respectively.
12.     Stockholders’ Equity
12.Stockholders' Equity
The Company’sCompany's authorized share capital is 300,000,000 shares of common stock and 100,000,000 shares of preferred stock, of which 25,000,000 is designated Series A, 25,000,000 is designated as Series A-1 and 50,000,000 is undesignated. As of December 31, 20162018 and 2015,2017, the Company had no preferred stock issued and outstanding.
Common Stock
In November 2015,December 2018, the Company entered into an equity distribution agreement with Barclays Capital Inc., Goldman Sachs & Co. LLC, HSBC Securities (USA) Inc., MUFG Securities Americas Inc. and TD Securities (USA) LLC, establishing an "at the market" equity offering program, under which the Company may offer and sell from time to time up to an aggregate of $750.0 million of its common stock in "at the market" transactions (the "2018 ATM Program"). As of December 31, 2018, no sales have been made under the 2018 ATM Program.
In August 2017, the Company entered into an equity distribution agreement with RBC Capital Market, LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated, Citigroup Global Markets Inc. and J.P. Morgan Securities LLC, establishing an "at the market" equity offering program, under which the Company may offer and sell from time to time up to an aggregate of $750.0 million of its common stock in "at the market" transactions (the "2017 ATM Program"). For the year ended December 31, 2018 and 2017, the Company sold 930,934 shares and 763,201 shares, respectively, for approximately $388.2 million and $355.1 million, respectively, net of payment of commissions to the sales agents and estimated equity offering costs. As of December 31, 2018, no shares remain available for sale under the 2017 ATM Program.
In March 2017, the Company issued and sold 2,994,7926,069,444 shares of its common stock in a public offering pursuant to a registration statement and a related prospectus and prospectus supplement, in each case filed with the Securities and Exchange Commission. The shares issued and sold included the full exercise of the underwriters’underwriters' option to purchase 390,625791,666 additional shares. The Company received net proceeds of approximately $829,496,000,$2,126.3 million, after deducting underwriting discounts and commissions of $32,344,000 and offering expenses of $660,000.
In December 2015, certain holders of the Company's 4.75% Convertible Subordinated Notes elected to convert a portion of the notes into 101,947 shares of the Company's common stock. See convertible debt in Note 10 for additional information.$58.7 million.
In April and June 2016, upon the maturity of the Company's 4.75% Convertible Subordinated Notes, holders of the Company's 4.75% Convertible Subordinated Notes converted $150,082,000$150.1 million principal amount of the notes into 1,981,662 shares of the Company's common stock. In June 2016, the Company also settled the capped call transaction and received 380,779 shares of common stock, which were placed in treasury and resulted in a credit of $141,688,000$141.7 million to additional paid inpaid-in capital at the market price of $372.10 on June 15, 2016. See convertible debt in Note 1011 for additional information.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



As of December 31, 2016,2018, the Company had reserved the following shares of authorized but unissued shares of common stock for future issuances:
Common stock options and restricted stock units5,134,8853,885,220
Common stock employee purchase plans3,427,8673,120,425
Total8,562,7527,005,645

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



Accumulated Other Comprehensive Loss
The components of the Company’sCompany's accumulated other comprehensive loss, (OCI)net of tax, consisted of the following as of December 31, 2014, 20152018, 2017 and 2016 (in thousands):
December 31, 2013 Net
Change
 December 31, 2014 Net
Change
 December 31, 2015 Net
Change
 December 31, 2016December 31, 2015 Net
Change
 December 31, 2016 Net
Change
 December 31, 2017 Net
Change
 Cumulative Effect Adjustment December 31, 2018
Foreign currency translation adjustment ("CTA") loss$(132,881) $(204,065) $(336,946) $(186,763) $(523,709) $(507,420) $(1,031,129)
Foreign currency translation adjustment ("CTA") gain (loss)$(523,709) $(507,420) $(1,031,129) $454,269
 $(576,860) $(421,743) $
 $(998,603)
Unrealized gain (loss) on cash flow hedges(1)
(2,187) 8,790
 6,603
 4,550
 11,153
 19,551
 30,704
11,153
 19,551
 30,704
 (54,895) (24,191) 43,671
 
 19,480
Net investment hedge CTA gain(1)

 
 
 4,484
 4,484
 45,505
 49,989
Net investment hedge CTA gain (loss)(1)
4,484
 45,505
 49,989
 (235,292) (185,303) 219,628
 
 34,325
Unrealized gain (loss) on available for sale securities(2)
180
 (279) (99) (40) (139) 2,249
 2,110
(139) 2,249
 2,110
 14
 2,124
 
 (2,124) 
Net actuarial gain (loss) on defined benefit plans(3)

 (2,001) (2,001) 1,153
 (848) 32
 (816)(848) 32
 (816) (143) (959) 55
 
 (904)
OCI attributable to redeemable non-controlling interests (4)
21,121
 (21,121) 
 
 
 
 
$(113,767) $(218,676) $(332,443) $(176,616) $(509,059) $(440,083) $(949,142)$(509,059) $(440,083) $(949,142) $163,953
 $(785,189) $(158,389) $(2,124) $(945,702)
__________________________
(1)
Refer to Note 78 for a discussion of the amounts reclassified from accumulated other comprehensive loss to net income (loss).income.
(2)
Upon adoption of ASU 2016-01 during the three months ended March 31, 2018, the Company recorded a net cumulative effect adjustment of $2.1 million from accumulated other comprehensive loss to retained earnings. The realized gains and losses reclassified from accumulated other comprehensive loss to net income (loss)as a result of sale of available for sale securities were insignificantnot significant for the yearyears ended December 31, 2017 and 2016.
(3)
The Company has a defined benefit pension plan covering all employees in one country where such plans are mandated by law. The Company does not have any defined benefit plans in any other countries. The unamortized gain (loss) on defined benefit plans includes gains or losses resulting from a change in the value of either the projected benefit obligation or the plan assets resulting from a change in an actuarial assumption, net of amortization.
(4)The Company purchased the redeemable non-controlling interests in ALOG in July 2014. Changes include $1,810 of other comprehensive income attributable to redeemable non-controlling interests for the seven months and $19,311 of accumulated other comprehensive income reclassified to additional paid-in capital upon the Company’s purchase of the redeemable non-controlling interests in ALOG in July 2014.
Changes in foreign currencies can have a significant impact to the Company’sCompany's consolidated balance sheets (as evidenced above in the Company’sCompany's foreign currency translation gain or loss), as well as its consolidated results of operations, as amounts in foreign currencies are generally translatingtranslated into more U.S. dollars when the U.S. dollar weakens or less U.S. dollars when the U.S. dollar strengthens. AtAs of December 31, 2016,2018, the U.S. dollar was generally stronger relative to certain of the currencies of the foreign countries in which the Company operates.operates as compared to December 31, 2017. This overall strengthstrengthening of the U.S. dollar had an overall negative impact on the Company’sCompany's consolidated financial position because the foreign denominations translated into less U.S. dollars as evidenced by anthe increase in foreign currency translation loss for the year ended December 31, 2016 compared to the year ended December 31, 20152018 as reflected in the above table. In future periods, the volatility of the U.S. dollar as compared to the other currencies in which the Company does business could have a significant impact on its consolidated financial position and results of operations including the amount of revenue that the Company reports in future periods.
Share Repurchase Program
2013 Share Repurchase Program
In December 2013, the Company’s Board of Directors (the “Board”) approved a share repurchase program (the “2013 Share Repurchase Program”) to repurchase up to $500,000,000 in value of the Company’s common stock in the open market or private transactions through December 31, 2014. The 2013 Share Repurchase Program was designed to return value to the Company’s stockholders and minimize dilution from stock issuances.Dividends
During the year ended December 31, 2014,2018, the Company's Board of Directors declared quarterly dividends of $2.28 per share on November 1, August 8, May 2 and February 14, 2018, to stockholders of record on November 14, August 22, May 23 and February 26, 2018, respectively, and payment dates of December 12, September 19, June 20 and March 21, 2018, respectively. The Company repurchasedpaid a total of 1,517,743 shares of its common stock$727.4 million in quarterly dividends during the open market at an average price of $196.32 per share for total consideration of $297,958,000 under the 2013 Share Repurchase Program. The 2013 Share Repurchase Program expired onyear ended December 31, 2014.2018.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



During the year ended December 31, 2015,2017, the Company's Board of Directors declared quarterly dividends of $2.00 per share on November 1, August 2, April 26 and February 15, 2017, to stockholders of record on November 15, August 23, May 24 and February 27, 2017, respectively, and payment dates of December 13, September 20, June 21 and March 22, 2017, respectively. The Company re-issued 7,348 shares of its treasury stock withpaid a total value of $1,807,000 related to the settlement of restricted stock units and 11,784 shares of its treasury stock with a total value of $3,546,000 related to the exchange and conversion of the 4.75% Convertible Subordinated Notes (see Note 10). During$612.1 million in quarterly dividends during the year ended December 31, 2014, the Company re-issued a total of 1,752,615 shares of treasury stock acquired under the 2013 Share Repurchase Program with a total value of $345,858,000 primarily related to the exchange and conversions of the 4.75% Convertible Subordinated Notes and the exchanges and settlement of the 3.00% Convertible Subordinated Notes (see Note 10).
2011 Share Repurchase Program
In November 2011, the Board approved a share repurchase program (the “2011 Share Repurchase Program”) to repurchase up to $250,000,000 in value of the Company’s common stock in the open market or private transactions through December 31, 2012. The 2011 Share Repurchase Program was designed to return value to the Company’s stockholders and minimize dilution from stock issuances.
During the year ended December 31, 2014, the Company re-issued a total of 355,477 shares of its treasury stock with a total value of $66,424,000, primarily related to the exchange and conversions of the 4.75% Convertible Subordinated Notes (see Note 10).
Special Distributions
In September 2015, the Company’s Board of Directors declared a special distribution of $627,000,000, or approximately $10.95 per share (the “2015 Special Distribution”), to its common stockholders. The 2015 Special Distribution represents an amount that includes the sum of: (1) foreign earnings and profits repatriated as dividend income in 2015; (2) taxable income in 2015 from depreciation recapture in respect of accounting method changes commenced in the Company’s pre-REIT period; and (3) certain other items of taxable income.
The 2015 Special Distribution was paid on November 10, 2015 to the Company’s common stockholders of record as of the close of business on October 8, 2015. Common stockholders had the option to elect to receive payment of the 2015 Special Distribution in the form of stock or cash. The number of shares distributed was determined based upon common stockholder elections and the average closing price of the Company’s common stock on the three trading days commencing on November 3, 2015 or $297.03 per share. As such, the Company issued 1,688,411 shares of its common stock and paid $125,486,000 in connection with the 2015 Special Distribution.
In October 2014, the Company’s Board of Directors declared a special distribution of $416,000,000, or approximately $7.57 per share (the “2014 Special Distribution”), to its common stockholders in connection with the Company’s planned conversion to a REIT. The 2014 Special Distribution was paid on November 25, 2014 to the Company’s common stockholders of record as of the close of business on October 27, 2014. Common stockholders had the option to elect to receive payment of the 2014 Special Distribution in the form of stock or cash, with the total cash payment to all stockholders limited to no more than 20% of the total distribution. The number of shares distributed was determined based upon common stockholder elections and the average closing price of the Company’s common stock on the three trading days commencing on November 18, 2014 or $224.45 per share. As such, the Company issued 1,482,419 shares of its common stock and paid $83,266,000 in connection with the 2014 Special Distribution.
Shares issued in connection with the 2015 Special Distribution and the 2014 Special Distribution impact weighted average shares outstanding from the date of issuance, thus impacting the Company’s earnings per share data prospectively from the distribution date.
Dividends2017.
During the year ended December 31, 2016, the Company's Board of Directors declared quarterly cash dividends of $1.75 per share on November 2, August 3, May 4 and February 18, 2016, withto stockholders of record dates ofon November 16, August 24, May 25 and March 9, 2016, respectively, and payment dates of December 14, September 14, June 15 and March 23, 2016, respectively. The Company paid a total of $492,403,000$492.4 million in cashquarterly dividends during the year ended December 31, 2016.
During the year ended December 31, 2015, the Company's Board of Directors declared quarterly cash dividends of $1.69 per share on October 28, July 29, May 7 and February 19, 2015, with record dates of December 9, August 26, May 27 and March 11,

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



2015, respectively, and payment dates of December 16, September 16, June 17 and March 25, 2015, respectively. The Company paid a total of $393,584,000 in cash dividends during the year ended December 31, 2015.
In addition, as of December 31, 2016,2018, for dividends and special distributions attributed to the RSU awards,restricted stock units, the Company recorded a short term dividend payable of $11,999,000$8.8 million and a long term dividend payable of $8,495,000$6.5 million for the restricted stock units that have not yet vested. As of December 31, 2017, for dividends and special distributions attributed to the restricted stock units, the Company recorded a short term dividend payable of $11.2 million and a long term dividend payable of $6.7 million for the restricted stock units that have not yet vested.
For Federalfederal income tax purposes, distributions to stockholders are treated as ordinary income, capital gains, return of capital or a combination thereof. For the years ended December 31, 20162018 and 2015,2017, the quarterly dividend and special distributionsdividends were classified as follows:
Record Date Payment Date Total Distribution Nonqualified Ordinary Dividend Qualified Ordinary Dividend Return of Capital
    (per share)
Fiscal 2016          
3/9/2016 3/23/2016 $1.750000
 $1.231334
 $0.518666
 $
5/25/2016 6/15/2016 1.750000
 1.231334
 0.518666
 
8/24/2016 9/14/2016 1.750000
 1.231334
 0.518666
 
11/16/2016 12/14/2016 1.750000
 1.231334
 0.518666
 
Total   $7.000000
 $4.925336
 $2.074664
 $
           
Fiscal 2015          
3/11/2015 3/25/2015 $1.690000
 $0.978733
 $0.711267
 $
5/27/2015 6/17/2015 1.690000
 0.978733
 0.711267
 
8/26/2015 9/16/2015 1.690000
 0.978733
 0.711267
 
10/8/2015 11/10/2015 10.945146
 6.338687
 4.606459
 
12/9/2015 12/16/2015 1.690000
 0.978733
 0.711267
 
Total   $17.705146
 $10.253619
 $7.451527
 $
Record Date Payment Date Total Distribution Nonqualified Ordinary Dividend Qualified Ordinary Dividend Return of Capital
    (per share)
Fiscal 2018          
2/26/2018 3/21/2018 $2.280000
 $2.280000
 $
 $
5/23/2018 6/20/2018 2.280000
 2.280000
 
 
8/22/2018 9/19/2018 2.280000
 2.280000
 
 
11/14/2018 12/12/2018 2.280000
 2.280000
 
 
Total   $9.120000
 $9.120000
 $
 $
           
Fiscal 2017          
2/27/2017 3/22/2017 $2.000000
 $2.000000
 $
 $
5/24/2017 6/21/2017 2.000000
 2.000000
 
 
8/23/2017 9/20/2017 2.000000
 2.000000
 
 
11/15/2017 12/13/2017 2.000000
 2.000000
 
 
Total   $8.000000
 $8.000000
 $
 $
13.     Stock-Based Compensation
13.Stock-Based Compensation
Equinix Equity Awards
Equity Compensation Plans
In May 2000, the Company’sCompany's stockholders approved the adoption of the 2000 Equity Incentive Plan as the successor plan to the 1998 Stock Plan. Beginning in August 2000, the Company no longer issued additional grants under the 1998 Stock Plan, and unexercised options under the 1998 Stock Plan that are canceled due to an optionee’s termination may be reissued under the successor 2000 Equity Incentive Plan. Under the 2000 Equity Incentive Plan, nonstatutory stock options, restricted shares, restricted stock units and stock appreciation rights may be granted to employees, outside directors and consultants at not less than 85% of the fair value on the date of grant, and incentive stock options may be granted to employees at not less than 100% of the fair value on the date of grant. Options granted prior to October 1, 2005 generally expire 10 years from the grant date, and equity awards granted to employees and consultants on or after October 1, 2005 will generally expire 7 years from the grant date, subject to continuous service of the optionee. Equity awards granted under the 2000 Equity Incentive Plan generally vest over 4 years. As of December 31, 2016, theThe Company had reserved a total of 16,636,172 shares for issuance under the 2000 Equity Incentive Plan of which 3,001,7961,892,262 shares were still available for grant.grant as of December 31, 2018. The 2000 Equity Incentive Plan is administered by the Compensation Committee of the Board of Directors (the “Compensation Committee”"Compensation Committee"), and the Compensation Committee may terminate or amend the plan, with approval of the stockholders as may be required by applicable law, at any time.
In May 2000, the Company’sCompany's stockholders approved the adoption of the 2000 Director Option Plan, which was amended and restated effective January 1, 2003. Under the 2000 Director Option Plan, each non-employee board member who was not previously an employee of the Company willwould receive an automatic initial nonstatutory stock option grant which vests in fouras well as an annual non-statutory

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installments. In addition, each non-employee board member will receive an annual non-statutory stock option grant on the date of the Company’sCompany's regular Annual Meeting of Stockholders, provided the board member will continue to serve as a director thereafter. Such annual option grants shall vest in full on the earlier of a) the first anniversary of the grant, or b) the date of the regular Annual Meeting of Stockholders held in the year following the grant date. A new director who receives an initial option will not receive an annual option in the same calendar year. Options granted under the 2000 Director Option Plan will have an option price not less than 100% of the fair value on the date of grant and will have a 10-year contractual term, subject to continuous service of the board member.Stockholders. On December 18, 2008, the Company’sCompany's Board of Directors passed resolutions eliminating all automatic stock option grant mechanisms under the 2000 Director Option Plan and replaced them with an automatic restricted stock unit grant mechanism under the 2000 Equity Incentive Plan. As of December 31, 2016, theThe Company had reserved 594,403 shares for issuance under the 2000 Director Option Plan of which 505,646 shares were still available for grant.grant as of December 31, 2018. The 2000 Director Option Plan is administered by the Compensation Committee and the Compensation Committee may terminate or amend the plan, with approval of the stockholders as may be required by applicable law, at any time.
In September 2001, the Company adopted the 2001 Supplemental Stock Plan, under which non-statutory stock options and restricted shares/restricted stock units may be granted to consultants and employees who are not executive officers or board members, at not less than 85% of the fair value on the date of grant. Options granted prior to October 1, 2005 generally expire 10 years from the grant date, and options granted on or after October 1, 2005 will generally expire seven years from the grant date, subject to continuous service of the optionee. Current stock options granted under the 2001 Supplemental Stock Plan generally vest over four years. As of December 31, 2016, theThe Company had reserved a total of 1,494,275 shares for issuance under the 2001 Supplemental Stock Plan, of which 260,498 shares were still available for grant.grant as of December 31, 2018. The 2001 Supplemental Stock Plan is administered by the Compensation Committee, and the plan will continue in effect indefinitely unless the Compensation Committee decides to terminate it earlier.
The 1998 Stock Plan, 2000 Equity Incentive Plan, 2000 Director Option Plan and 2001 Supplemental Stock Plan are collectively referred to as the “Equity"Equity Compensation Plans."
Stock Options
Stock option activity under the Equity Compensation Plans is summarized as follows:
 Number of Shares Outstanding Weighted Average Exercise Price per Share Weighted Average Remaining Contractual Life (Years) 
Aggregate
Intrinsic
Value (1) 
(Dollars in Thousands)
Stock options outstanding at December 31, 2013148,055
 $73.99
    
Stock options exercised(71,780) 72.44
    
Additional shares granted due to special distribution1,659
 
    
Stock options outstanding at December 31, 201477,934
 73.84
    
Stock options exercised(41,889) 64.18
    
Additional shares granted due to special distribution1,454
 
    
Stock options expired(250) 41.12
    
Stock options outstanding at December 31, 201537,249
 82.06
    
Stock options exercised(18,183) 80.10
    
Stock options outstanding at December 31, 201619,066
 82.01
 1.2 $5,251
Stock options vested and exercisable at December 31, 201619,066
 82.01
 1.2 $5,251
__________________________
(1)The aggregate intrinsic value is calculated as the difference between the market value of the stock as of December 31, 2016 and the exercise price of the option.

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The following table summarizes information about outstanding stock options as of December 31, 2016:
 Outstanding Exercisable
Range of exercise pricesNumber of Shares Weighted Average Remaining Contractual Life (Years) Weighted Average Exercise Price Number of Shares Weighted Average Exercise Price
$28.56 to $54.221,585
 1.89 $35.55
 1,585
 $35.55
$80.84 to $88.5617,481
 1.14 86.22
 17,481
 86.22
 19,066
 1.2 82.01
 19,066
 82.01
The Company provides the following additional disclosures for stock options as of December 31 (in thousands):
 2016 2015 2014
Total fair value of stock options vested$
 $
 $45
Total aggregate intrinsic value of stock options exercised (1)
4,712
 7,198
 9,227
_________________________
(1)The intrinsic value is calculated as the difference between the market value of the stock on the date of exercise and the exercise price of the option.

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Restricted Stock Units
Since 2008, the Company primarily grants restricted stock units to its employees, including executives and non-employee directors, in lieu of stock options. The Company generally grants restricted stock units that have a service condition only or have both a service and performance condition. Each restricted stock unit is not considered issued and outstanding and does not have voting rights until it is converted into one share of the Company’sCompany's common stock upon vesting. Restricted stock unit activity is summarized as follows:
Number of Shares Outstanding Weighted Average Grant Date Fair Value per Share Weighted Average Remaining Contractual Life (Years) 
Aggregate Intrinsic Value (1) (Dollars in Thousands)
Number of Shares Outstanding
Weighted Average Grant Date Fair Value per Share
Weighted Average Remaining Contractual Life (Years)
Aggregate Intrinsic Value (1) (Dollars in Thousands)
Restricted stock units outstanding, December 31, 20131,509,382
 $122.05
  
Restricted stock units granted803,692
 190.90
  
Additional shares granted due to special distribution48,171
 224.45
  
Restricted stock units released, vested(703,393) 201.85
  
Restricted stock units canceled(253,878) 179.71
  
Restricted stock units outstanding, December 31, 20141,403,974
 114.56
  
Restricted stock units granted711,990
 236.89
  
Additional shares granted due to special distribution51,432
 297.03
  
Restricted stock units released, vested(623,554) 173.79
  
Special distribution shares released(19,966) 227.99
  
Restricted stock units canceled(103,922) 198.67
  
Special distribution shares canceled(3,516) 235.43
  
Restricted stock units outstanding, December 31, 20151,416,438
 148.53
  1,416,438

$148.53



Restricted stock units granted720,601
 309.18
  720,601

309.18



Additional shares granted due to special distribution37
 297.03
  37

297.03



Restricted stock units released, vested(655,584) 213.72
  (655,584)
213.72



Special distribution shares released(35,354) 269.94
  (35,354)
269.94



Restricted stock units canceled(93,940) 242.41
  (93,940)
242.41



Special distribution shares canceled(4,319) 272.84
  (4,319)
272.84



Restricted stock units outstanding, December 31, 20161,347,879
 192.59
 1.2 $481,745
1,347,879

192.59



Restricted stock units granted658,196

389.60



Restricted stock units released, vested(606,064)
260.75



Special distribution shares released(15,667)
243.06



Restricted stock units canceled(79,451)
313.83



Special distribution shares canceled(1,002)
282.49



Restricted stock units outstanding, December 31, 20171,303,891

252.30



Restricted stock units granted704,249

387.31



Restricted stock units released, vested(593,528)
299.07



Special distribution shares released(13,880)
283.14



Restricted stock units canceled(173,460)
336.75



Special distribution shares canceled(485)
295.77



Restricted stock units outstanding, December 31, 20181,226,787

$361.22

1.24
$432,516
__________________________
(1)The intrinsic value is calculated based on the market value
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



(1)
The intrinsic value is calculated based on the market value of the stock as of December 31, 2018.
The total fair value of restricted stock units vested and released during the years ended December 31, 2018, 2017 and 2016 2015was $249.8 million, $259.1 million and 2014 was $227,359,000, $157,605,000 and $141,980,000,$227.4 million, respectively.
Employee Stock Purchase Plan
In June 2004, the Company’sCompany's stockholders approved the adoption of the 2004 Employee Stock Purchase Plan (the “2004"2004 Purchase Plan”Plan") as a successor plan to a previous plan that ceased activity in 2005. A total of 500,000 shares have been reserved for issuance under the 2004 Purchase Plan, and the number of shares available for issuance under the 2004 Purchase Plan automatically increased on January 1 each year, beginning in 2005 and ending in 2014 by the lesser of 2% of the shares of common stock then outstanding or 500,000 shares. Effective November 25, 2014, 3,197 shares were added to the 2004 Purchase Plan, representing an anti-dilutive adjustment pursuant to the 2014 Special Distribution. Effective November 10, 2015, 9,020 shares were added to the 2004 Purchase Plan, representing an anti-dilutive adjustment pursuant to the 2015 Special Distribution. As of December 31, 2016,2018, a total of 3,427,8673,120,425 shares remained available for purchase under the 2004 Purchase Plan. The 2004 Purchase Plan permits eligible employees to purchase common stock on favorable terms via payroll deductions of up to 15% of the employee’semployee's cash compensation, subject to certain share and statutory dollar limits. Two overlapping offering periods commence during each calendar year, on each February 15 and August 15 or such other periods or dates as determined by the Compensation Committee

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from time to time, and the offering periods last up to 24 months with a purchase date every six months. The price of each share purchased is 85% of the lower of a) the fair value per share of common stock on the last trading day before the commencement of the applicable offering period or b) the fair value per share of common stock on the purchase date. The 2004 Purchase Plan is administered by the Compensation Committee of the Board of Directors, and such plan will terminate automatically in June 2024 unless a) the 2004 Purchase Plan is extended by the Board of Directors and b) the extension is approved within 12 months by the Company’sCompany's stockholders.
The Company provides the following disclosures for the 2004 Purchase Plan as of December 31 (dollars, except shares):
2016 2015 20142018 2017 2016
Weighted-average purchase price per share$217.91
 $150.13
 $144.95
$341.48
 $250.65
 $217.91
Weighted average grant-date fair value per share of shares purchased60.49
 57.63
 53.37
$90.04
 $72.21
 $60.49
Number of shares purchased150,044
 182,175
 166,384
145,346
 162,076
 150,044
The Company uses the Black-Scholes option-pricing model to determine the fair value of shares purchased under the 2004 Purchase Plan with the following weighted average assumptions forduring the years ended December 31:
 2016 2015 2014
Dividend yield2.38-2.53%
 2.65 - 2.81%
 0%
Expected volatility23% 31% 34%
Risk-free interest rate0.36% 0.26% 0.19%
Expected life (in years)1.04
 1.25
 1.25
 2018 2017 2016
Range of dividend yield1.97 - 2.00%
 2.10 - 2.31%
 2.38 - 2.53%
Range of risk-free interest rate1.79 - 2.68%
 0.70 - 1.35%
 0.48 - 0.76%
Range of expected volatility19.04 - 24.33%
 16.42 - 24.27%
 18.80 - 30.94%
Weighted-average expected volatility20.74% 20.30% 25.01%
Weighted average expected life (in years)1.43
 1.52
 1.41
Stock-Based Compensation Recognized in the Consolidated Statement of Operations
The Company generally recognizes stock-based compensation expense on a straight-line basis over the requisite service period of the awards. However, for awards with market conditions or performance conditions, stock-based compensation expense is recognized on a straight-line basis over the requisite service period for each vesting tranche of the award.
In October 2014, the Compensation Committee approved amendments to the terms of all outstanding restricted stock units (“RSUs”) granted prior to January 1, 2014 to provide for dividend equivalent rights (“DERs”) in the event of future dividends paid on the Company’s common stock.  The Compensation Committee also approved an adjustment to outstanding stock options, including those under the Company’s Employee Stock Purchase Plan (“ESPP”), to ensure that the cash portion of the 2014 Special Distribution would not negatively impact the intrinsic value of the options. Pursuant to the accounting standard for stock compensation, these actions affecting the terms of the awards are considered modifications for accounting purposes that resulted in incremental stock-based compensation expenses and will be recognized over the requisite service period for each vesting tranche of the award. The total charges associated with this modification are insignificant to the financial statements.
As of December 31, 2016,2018, the total stock-based compensation cost related to unvested equity awards not yet recognized, net of estimated forfeitures, totaled $241,037,000$337.8 million which is expected to be recognized over a weighted-average period of 2.052.14 years.
The following table presents, by operating expense, the Company’s stock-based compensation expense recognized in the Company’s consolidated statement of operations for the years ended December 31 (in thousands):
 2016 2015 2014
Cost of revenues$13,086
 $9,878
 $8,511
Sales and marketing43,030
 36,847
 30,084
General and administrative100,032
 86,908
 79,395
Total$156,148
 $133,633
 $117,990

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The Company’sfollowing table presents, by operating expense, the Company's stock-based compensation expense recognized in the Company's consolidated statement of operations for the years ended December 31 (in thousands):
 2018 2017 2016
Cost of revenues$18,247
 $13,621
 $13,086
Sales and marketing53,448
 50,094
 43,030
General and administrative109,021
 111,785
 100,032
Total$180,716
 $175,500
 $156,148
The Company's stock-based compensation recognized in the consolidated statement of operations was comprised of the following types of equity awards for the years ended December 31 (in thousands):
2016 2015 20142018 2017 2016
Stock options$
 $1,679
 $4,917
Restricted shares and restricted stock units145,769
 124,512
 104,235
Restricted stock units$165,141
 $164,321
 $145,769
Employee stock purchase plan10,379
 7,442
 8,838
15,575
 11,179
 10,379
Total$156,148
 $133,633
 $117,990
$180,716
 $175,500
 $156,148
Stock-based compensation for stock options for the year ended December 31, 2015 included $1,191,000 in as a result of the Company's acquisition of Bit-isle in November 2015. During the years ended December 31, 2016, 20152018, 2017 and 2014,2016, the Company capitalized $4,242,000, $2,987,000$9.1 million, $6.2 million and $3,958,000,$4.2 million, respectively, of stock-based compensation expense as construction in progress in property, plant and equipment.
14.     Income Taxes
The Company began operating as a real estate investment trust for federal income tax purposes ("REIT") effective January 1, 2015, and thereafter received a favorable private letter ruling (“PLR”) from the U.S. Internal Revenue Service (“IRS”) that validated the Company's position with respect to specified REIT compliance matters. As a result, the Company may deduct the distributions made to its stockholders from taxable income generated by the Company and its qualified REIT subsidiaries (“QRSs”). The Company’s dividends paid deduction generally eliminates the taxable income of the Company and its QRSs, resulting in no U.S. income tax due. However, the Company's taxable REIT subsidiaries (“TRSs”) in the U.S. will continue to be subject to federal and state income taxes on any taxable income generated by them. In addition, the foreign operations of the Company will continue to be subject to local income taxes regardless of whether the foreign operations are operated as a QRS or a TRS.
14.Income Taxes
Income (loss) before income taxes is attributable to the following geographic locations for the years ended December 31, (in thousands):
2016 2015 20142018 2017 2016
Domestic$215,010
 $123,153
 $(46,876)$298,009
 $148,500
 $215,010
Foreign(55,151) 87,845
 131,609
135,029
 138,332
 (55,151)
Income from continuing operations before income taxes$159,859
 $210,998
 $84,733
$433,038
 $286,832
 $159,859
The tax benefit (expenses) for income taxes consisted of the following components for the years ended December 31, (in thousands):
2016 2015 20142018 2017 2016
Current:          
Federal$(16,365) $(85,352) $(98,445)$7,085
 $9,346
 $(16,365)
State and local(2,147) (3,984) (16,243)(2,663) (849) (2,147)
Foreign(62,278) (27,090) (31,844)(118,175) (109,032) (62,278)
Subtotal(80,790) (116,426) (146,532)(113,753) (100,535) (80,790)
Deferred:          
Federal(11,184) 87,801
 (177,877)(27,874) 9,684
 (11,184)
State and local(3,328) 4,600
 (21,539)(1,165) 2,018
 (3,328)
Foreign49,851
 801
 489
75,113
 34,983
 49,851
Subtotal35,339
 93,202
 (198,927)46,074
 46,685
 35,339
Provision for income taxes$(45,451) $(23,224) $(345,459)$(67,679) $(53,850) $(45,451)
State and foreign taxes not based on income are included in general and administrative expenses and the aggregate amounts were insignificantnot significant for the years ended December 31, 2016, 20152018, 2017 and 2014.2016.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



The Company is entitled to a deduction for federalfiscal 2018, 2017 and state2016 income tax purposes with respect to employee equity award activity. The reduction in income tax payable related to windfall tax benefits for employee equity awards has been reflected as an adjustment to additional paid-in capital. For the years ended December 31, 2016, 2015 and 2014, the benefits arising from employee equity award activity that resulted in an adjustment to additional paid-in capital were approximately $2,773,000, $30,000 and $18,561,000, respectively. The amount of benefits for 2016 and 2015 is significantly lower than 2014 due to the zero effective U.S. tax rate that applies to the REIT as the Company intended to distribute or distributed 100% of its U.S. taxable income for 2016 and 2015.
The fiscal 2016, 2015 and 2014 income tax expensebenefit (expenses) differed from the amounts computed by applying the U.S. federal income tax rate of 21%, 35% and 35%, respectively, to pre-tax income as a result of the following for the years ended December 31 (in thousands):
2016 2015 20142018 2017 2016
Federal tax at statutory rate$(55,951) $(73,849) $(29,657)$(90,938) $(100,391) $(55,951)
State and local taxes(4,895) 945
 1,370
State and local tax (expense) benefit(3,616) 1,000
 (4,895)
Deferred tax assets generated in current year not benefited(6,246) (4,916) (3,311)(3,777) (7,643) (6,246)
Foreign income tax rate differential22,016
 30,387
 20,002
(4,072) 26,151
 22,016
Non-deductible expenses(15,828) (14,252) (1,274)(756) (2,629) (15,828)
Stock-based compensation expense(5,890) (3,922) (4,496)(2,308) (616) (5,890)
Change in valuation allowance11,995
 710
 1,655
38,684
 (716) 11,995
Foreign financing activities(26,708) 2,592
 2,981
(17,548) 1,319
 (26,708)
Loss on debt extinguishment(8,288) 
 

 (1,604) (8,288)
Gain on divestments8,828
 
 

 
 8,828
Uncertain tax positions reserve(9,371) (3,191) (463)(20,440) (66) (9,371)
Tax adjustments related to REIT45,060
 45,823
 (324,142)32,189
 41,973
 45,060
Enactment of the US tax reform
 (6,513) 
Other, net(173) (3,551) (8,124)4,903
 (4,115) (173)
Total income tax expense$(45,451) $(23,224) $(345,459)$(67,679) $(53,850) $(45,451)
The Company had not previously provided for deferred taxesLegislation commonly referred to as the Tax Cuts and Jobs Act ("TCJA"), which was signed into law on December 22, 2017, contained many significant changes to the excess ofU.S. federal income tax laws. Among other things, the financial reporting value overTCJA reduced the U.S. corporate income tax rate from 35% to 21% effective January 1, 2018, limited the tax basis in its investments in foreign subsidiaries that are essentially permanent in duration because the Company intended to reinvest the earnings outsidedeductibility of interest expense, accelerated expensing of certain business assets and transitioned the U.S. for an indefinite periodinternational taxation from a worldwide tax system to a territorial tax system by imposing a one-time mandatory repatriation of time.undistributed foreign earnings. As a result of the Company’sreduced corporate tax rate, the Company recognized an income tax expense of $6.5 million during the fourth quarter of 2017 as a provisional estimate due to the remeasurement of the net deferred tax assets in the U.S. TRS. In the fourth quarter of 2018, the Company has completed the analysis of the TCJA's income tax effects and recorded an additional $1.3 million as an adjustment to the provisional amount related to the remeasurement of the net deferred tax assets in the U.S. TRS.
The TCJA mandated a one-time deemed repatriation of undistributed foreign earnings, which increased the Company's 2017 taxable income, as well as its required REIT distribution. In the fourth quarter of 2017, the Company estimated a provisional amount of $195.0 million as the one-time mandatory repatriation of its cumulative foreign earnings that was not previously included in the U.S. taxable income. In the fourth quarter of 2018, the Company completed the analysis based on the interpretation and guidance issued during 2018 and determined the one-time mandatory repatriation of its cumulative foreign earnings to be $271.8 million. The Company had an option of including the entire amount in its 2017 taxable income or spreading the amount over 8 years in its taxable income. The Company has included the entire amount in its 2017 taxable income. The Company believes the mandatory repatriation resulted in no financial statement impact because the Company satisfied its REIT distribution requirement and paid out such amounts (net of the permitted one-time participation deduction) to its stockholders.
The TCJA included a Global Intangible Low-Taxed Income ("GILTI") provision that increases U.S. federal taxable income by certain foreign subsidiary income in the year it is earned. The Company's accounting policy is to treat any tax on GILTI inclusions as a current period cost included in the tax expense in the year incurred. The Company believes the GILTI inclusion provision will result in no financial statement impact provided the Company satisfies its REIT distribution requirement with respect to the GILTI inclusions.
As a result of the Company's conversion to a REIT effective January 1, 2015, it is no longer the Company’sCompany's intent to indefinitely reinvest undistributed foreign earnings from its operations in Europe, Canada and Japan.earnings. However, no deferred tax liability has been recognized to account for this change because the expected recovery of the basis difference will not result in U.S. taxes in the post-REIT conversion periods. As itperiods because none of its foreign subsidiaries is owned by a U.S. taxable REIT subsidiary and the withholding tax effect would be immaterial. The Company continues to qualify as a REIT,assess the Company will not incur U.S. tax liability on the future repatriation of the foreign earnings and profits of the above noted jurisdictions due to the zero tax rate that will apply provided the Company distributes 100% of its taxable income. The Company, in general, will continue to reinvest its undistributed foreign earnings in jurisdictions that are not included in the REIT structure indefinitely. The foreign withholding taxes are expected to be immaterial if these undistributed foreign earnings are distributed. During the fourth quarter of 2016, the Company repatriated approximately $63,700,000 of foreign earnings from Singapore, which increased the taxable income for 2016 and was included in the REIT distribution for the year. There is no foreign withholding tax triggered byimpact of its current policy and does not believe the repatriation.distribution of its foreign

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earnings would trigger any significant foreign withholding taxes, as a majority of the foreign jurisdictions where the Company operates do not impose withholding taxes on dividend distributions to a corporate U.S. parent.
The types of temporary differences that give rise to significant portions of the Company’sCompany's deferred tax assets and liabilities are set out below as of December 31 (in thousands):
2016 20152018 2017
Deferred tax assets:      
Reserves and accruals$11,276
 $13,013
$24,136
 $27,673
Stock-based compensation expense1,752
 1,459
2,524
 1,960
Unrealized (gains) losses
 10,656
Unrealized losses1,471
 10,768
Operating loss carryforwards37,594
 34,457
49,169
 95,864
Others, net5
 18
Gross deferred tax assets50,627
 59,603
77,300
 136,265
Valuation allowance(29,167) (29,894)(57,003) (84,573)
Total deferred tax assets, net21,460
 29,709
20,297
 51,692
Deferred tax liabilities:      
Property, plant and equipment(57,006) (9,048)(50,610) (65,825)
Unrealized (gains) losses(7,832) 
Intangible assets(168,655) (60,133)(159,237) (172,123)
Total deferred tax liabilities(233,493) (69,181)(209,847) (237,948)
Net deferred tax liabilities$(212,033) $(39,472)$(189,550) $(186,256)
The tax basis of REIT assets, excluding investments in TRSs, is greater than the amounts reported for such assets in the accompanying consolidated balance sheet by approximately $1,153,900,000 at$1.8 billion as of December 31, 2016.
2018.
The Company's accounting for deferred taxes involves weighing positive and negative evidence concerning the realizability of the Company's deferred tax assets in each tax jurisdiction. After considering such evidence as the nature, frequency and severity of current and cumulative financial reporting losses, and the sources of future taxable income and tax planning strategies, managementthe Company concluded that valuation allowances were required in certain foreign jurisdictions. A valuation allowance continues to be provided for the deferred tax assets, net of deferred tax liabilities, associated with the Company's operations in Brazil, Canada, and certain jurisdictions located in the Company’s EMEA and Asia-Pacific regions. The operations in thesethe jurisdictions for which a valuation allowance has been established have a history of significant losses as of December 31, 2016.2018. As such, managementthe Company does not believe these operations have established a sustained history of profitability and that a valuation allowance is, therefore, necessary.

The Company also provided a full valuation allowance against certain gross deferred tax assets acquired in the Metronode Acquisition as these deferred tax assets are not expected to be realizable in the foreseeable future.
Changes in the valuation allowance for deferred tax assets for the years ended December 31, 2016, 20152018, 2017 and 20142016 are as follows (in thousands):
2016 2015 20142018 2017 2016
Beginning balance$29,894
 $27,181
 $31,058
$84,573
 $29,167
 $29,894
Amounts from acquisitions5,053
 
 
33,070
 25,283
 5,053
Amounts recognized into income(11,995) (710) (1,655)(38,684) 716
 (11,995)
Current increase (decrease)6,557
 4,513
 721
(13,086) 28,431
 6,557
Impact of foreign currency exchange(342) (1,090) (3,181)(8,870) 976
 (342)
Net operating loss ("NOL") and tax credit expiration
 
 238
Ending balance$29,167
 $29,894
 $27,181
$57,003
 $84,573
 $29,167
Federal and state tax laws, including California tax laws, impose substantial restrictions on the utilization of NOL and credit carryforwards in the event of an "ownership change" for tax purposes, as defined in Section 382 of the Internal Revenue Code. In 2003, the Company conducted an analysis to determine whether an ownership change had occurred due to significant stock transactions in each of the reporting years disclosed at that time. The analysis indicated that anAn ownership change occurred during fiscal year 2002, which resulted in an annual limitation of approximately $819,000$0.8 million for NOL carryforwards generated prior to 2003.

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Therefore, the Company substantially reduced its federal and state NOL carryforwards for the periods prior to 2003 to approximately $16,400,000. In addition, an ownership change under Section 382 of the Internal Revenue Code was triggered in September 2007 by the issuance of 4,211,939 shares of theThe Company's common stock. However, the annual limitation associated with this ownership change is not meaningful due to the substantial market capitalization of the Company at the time of the ownership change. The Company determined that no Section 382 ownership change occurred during the year ended December 31, 2016. In addition, the NOL acquired in the Switch and Data acquisition in 2010 is subject to the Section 382 limitation; however, the Company has determined that none of the acquired NOLs will expire unused as a result of the limitation.
The Company’s U.S. operations generated significant taxable income (versus book income) for the years ended December 31, 2016 and 2015 primarily due to the change in the tax method for depreciation of the Company’s property, plant and equipment. As the result of announcing its plan to pursue a REIT conversion, the Company changed its methods of depreciating and amortizing various data center assets to methods that are more consistent with the characterization of such assets as real property for REIT purposes. The change in the depreciation method resulted in the recapture of depreciation expense deducted in prior years and a much smaller amount of depreciation expense for the years ended December 31, 2016 and 2015.
The Company’s NOL carryforwards for federal, state and foreign tax purposes which expire, if not utilized, at various intervals from 2017,2019, are outlined below (in thousands):
Expiration Date 
Federal (1)
 
State (1)
 Foreign Total
2017 $
 $
 $9,018
 $9,018
2018 to 2020 80,915
 190
 26,405
 107,510
2021 to 2023 148,238
 
 3,375
 151,613
2024 to 2026 15,564
 3,501
 8,377
 27,442
2027 to 2029 6,065
 
 
 6,065
2030 to 2032 
 2,445
 
 2,445
Thereafter 
 1,108
 162,863
 163,971
  $250,782
 $7,244
 $210,038
 $468,064
Expiration Date 
Federal (1)
 State Foreign Total
2019 $
 $
 $8,397
 $8,397
2020 to 2022 210,114
 
 14,436
 224,550
2023 to 2025 26,838
 
 13,596
 40,434
2026 to 2028 12,186
 45
 2,297
 14,528
Thereafter 
 731
 137,333
 138,064
  $249,138
 $776
 $176,059
 $425,973
__________________________
(1)
The total amount of NOL carryforwards that will not be available to offset the Company’sCompany's future taxable income after dividend paid deduction due to Section 382 limitations was $245,101,000, comprising $241,766,000 of federal and $3,335,000 of state.$241.8 million for federal.
Approximately $3,021,000 of the total NOL carryforwards is attributable to excess tax deductions related to employee equity awards, the benefit from which will be credited to additional paid-in capital when subsequently utilized in future years.
The beginning and ending balances of the Company's unrecognized tax benefits are reconciled below for the years ended December 31 (in thousands):
2016 2015 20142018 2017 2016
Beginning balance$30,845
 $36,138
 $36,552
$82,390
 $72,187
 $30,845
Gross increases related to prior year tax positions570
 
 1,200
33,436
 6,095
 570
Gross decreases related to prior year tax positions
 (8,645) (984)
Gross increases related to current year tax positions41,972
 4,802
 1,538
48,685
 19,832
 41,972
Decreases resulting from expiration of statute of limitation(826) (1,450) (1,112)(1,276) (15,410) (826)
Decreases resulting from settlements(374) 
 (1,056)(12,305) (314) (374)
Ending balance$72,187
 $30,845
 $36,138
$150,930
 $82,390
 $72,187
The Company recognizes interest and penalties related to unrecognized tax benefits within income tax benefit (expense) in the consolidated statementstatements of operations. During the year ended December 31, 2016, the accrued interest and penalties related to the unrecognized tax benefits was increased by $675,000. During the years ended December 31, 2015 and 2014, the accrued interest and penalties related to the unrecognized tax benefits were decreased by $1,701,000 and $3,126,000, respectively, primarily resulting from the settlement of tax audits and the lapse of statutes of limitations in its foreign operations. The Company has accrued $4,411,000$8.4 million and $3,736,000$2.9 million for interest and penalties accrued atas of December 31, 20162018 and 2015,2017, respectively.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



The unrecognized tax benefits of $72,187,000$114.9 million as of December 31, 2016,2018, if subsequently recognized, will affect the Company's effective tax rate favorably at the time when such a benefit is recognized.
Due to various tax years open for examination, it is reasonably possible that the balance of unrecognized tax benefits could significantly increase or decrease over the next 12 months as the Company may be subject to either examination by tax authorities, tax audit settlements, or a lapse in statute of limitations. The Company is currently unable to estimate the range of possible adjustments to the balance of unrecognized tax benefits.
The Company's income tax returns for all taxthe years from 2015 through current remain open to examination by federal and state taxing authorities due to the Company's NOL carryforwards.authorities. In addition, the Company's tax years of 20052007 through 20152018 remain open and subject to examination by local tax authorities in certain foreign jurisdictions in which the Company has major operations.
15.     Commitments and Contingencies
15.Commitments and Contingencies
Purchase Commitments
Primarily as a result of the Company’sCompany's various IBX expansion projects, as of December 31, 2016,2018, the Company was contractually committed for $234,365,000$0.7 billion of unaccrued capital expenditures, primarily for IBX equipment not yet delivered and labor not yet provided, in connection with the work necessary to open these IBX data centers and make them available to customers for installation. In addition, the Company had numerous other, non-capital purchase commitments in place as of December 31, 2016,2018, such as commitments to purchase power in select locations, primarily in select locations through 20172019 and thereafter, and other open purchase orders for goods, services or servicesarrangements that may contain embedded leases to be delivered or provided during 20172019 and thereafter. Such other miscellaneous purchase commitments totaled $304,937,000$0.8 billion as of December 31, 2016.2018. In addition, the Company entered into lease agreements in various locations for a total lease commitment of approximately $262.2

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



million, excluding potential lease renewals. These lease agreements will commence between February 2019 and May 2020 with lease terms of 5 to 30 years.
Contingent Liabilities
The Company estimates exposure on certain liabilities, such as indirect and property taxes, based on the best information available at the time of determination. With respect to real and personal property taxes, the Company records what it can reasonably estimate based on prior payment history, current landlord estimates or estimates based on current or changing fixed asset values in each specific municipality, as applicable. However, there are circumstances beyond the Company’sCompany's control whereby the underlying value of the property or basis for which the tax is calculated on the property may change, such as a landlord selling the underlying property of one of the Company’sCompany's IBX data center leases or a municipality changing the assessment value in a jurisdiction and, as a result, the Company’sCompany's property tax obligations may vary from period to period. Based upon the most current facts and circumstances, the Company makes the necessary property tax accruals for each of its reporting periods. However, revisions in the Company’sCompany's estimates of the potential or actual liability could materially impact the financial position, results of operations or cash flows of the Company.
The Company's indirect and property tax filings in various jurisdictions are subject to examination by local tax authorities. The outcome of any examinations cannot be predicted with certainty. The Company regularly assesses the likelihood of adverse outcomes resulting from these examinations that would affect the adequacy of its tax accruals for each of the reporting periods. If any issues arising from the tax examinations are resolved in a manner inconsistent with the Company’sCompany's expectations, the revision of the estimates of the potential or actual liabilities could materially impact the financial position, results of operations, or cash flows of the Company.
From time to time, the Company may have certain contingent liabilities that arise in the ordinary course of its business activities. The Company accrues contingent liabilities when it is probable that future expenditures will be made and such expenditures can be reasonably estimated. In the opinion of management, there are no pending claims for which the outcome is expected to result in a material adverse effect in the financial position, results of operations or cash flows of the Company.
Employment Agreements
The Company has entered into a severance agreement with each of its executive officers that provides for a severance payment equal to the executive officer’sofficer's annual base salary and maximum bonus in the event his or her employment is terminated for any reason other than cause or he or she voluntarily resigns under certain circumstances as described in the agreement. In addition, under the agreement, the executive officer is entitled to the payment of his or her monthly health care premiums under the Consolidated Omnibus Budget Reconciliation Act for up to 12 months. For certain executive officers, these benefits are only triggered after a change-in-control of the Company.

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Indemnification and Guarantor Arrangements
As permitted under Delaware law, the Company has agreements whereby the Company indemnifies its officers and directors for certain events or occurrences while the officer or director is, or was serving, at the Company’sCompany's request in such capacity. The term of the indemnification period is for the officer's or director's lifetime. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has a director and officer insurance policy that limits the Company’sCompany's exposure and enables the Company to recover a portion of any future amounts paid. As a result of the Company’sCompany's insurance policy coverage, the Company believes the estimated fair value of these indemnification agreements is minimal. The Company has no liabilities recorded for these agreements as of December 31, 2016.2018.
The Company enters into standard indemnification agreements in the ordinary course of business. Pursuant to these agreements, the Company indemnifies, holds harmless, and agrees to reimburse the indemnified party for losses suffered or incurred by the indemnified party, generally the Company’sCompany's business partners or customers, in connection with any U.S. patent, or any copyright or other intellectual property infringement claim by any third party with respect to the Company’sCompany's offerings. The term of these indemnification agreements is generally perpetual any time after execution of the agreement. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has never incurred costs to defend lawsuits or settle claims related to these indemnification agreements. As a result, the Company believes the estimated fair value of these agreements is minimal. The Company has no liabilities recorded for these agreements as of December 31, 2016.2018.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



The Company enters into arrangements with its business partners, whereby the business partner agrees to provide services as a subcontractor for the Company’sCompany's installations. Accordingly, the Company enters into standard indemnification agreements with its customers, whereby the Company indemnifies them for other acts, such as personal property damage, of its subcontractors. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has general and umbrella insurance policies that enable the Company to recover a portion of any amounts paid. The Company has never incurred costs to defend lawsuits or settle claims related to these indemnification agreements. As a result, the Company believes the estimated fair value of these agreements is minimal. The Company has no liabilities recorded for these agreements as of December 31, 2016.2018.
The Company has service level commitment obligations to certain of its customers. As a result, service interruptions or significant equipment damage in the Company’sCompany's IBX data centers, whether or not within the Company’sCompany's control, could result in service level commitments to these customers. The Company’sCompany's liability insurance may not be adequate to cover those expenses. In addition, any loss of services, equipment damage or inability to meet the Company’sCompany's service level commitment obligations could reduce the confidence of the Company’sCompany's customers and could consequently impair the Company’sCompany's ability to obtain and retain customers, which would adversely affect both the Company’sCompany's ability to generate revenues and the Company’sCompany's operating results. The Company generally has the ability to determine such service level credits prior to the associated revenue being recognized. The Company has nodoes not have significant liabilities in connection with service level credits as of December 31, 2016.2018.
16.     Related Party Transactions
16.Related Party Transactions
The Company has several significant stockholders and other related parties that are also customers and/or vendors. The Company’sCompany's activity of related party transactions was as follows (in thousands):
Years ended December 31,Years ended December 31,
2016 2015 20142018 2017 2016
Revenues$11,822
 $10,745
 $8,392
$19,439
 $13,726
 $11,822
Costs and services14,574
 10,808
 8,351
19,708
 11,211
 14,574
 As of December 31,
 2016 2015
Accounts receivable$1,109
 $797
Accounts payable1,720
 254

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



On February 10, 2016, the Company entered into a purchase and sale agreement to acquire land and a building from Prologis, L.P., with which it shares a common board member, for approximately $6.3 million. This transaction is considered a related party transaction but is not reflected in the related party data presented above.
 As of December 31,
 2018 2017
Accounts receivable$4,031
 $1,321
Accounts payable585
 744
17.     Segment Information
17.Segment Information
While the Company has a single line of business, which is the design, build-out and operation of IBX data centers, it has determined that it has three reportable segments comprised of its Americas, EMEA and Asia-Pacific geographic regions.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



The Company’sfollowing tables present revenue information disaggregated by service lines and geographic areas (in thousands):
 Twelve Months Ended December 31, 2018
 Americas EMEA Asia-Pacific Total
Colocation (1)
$1,732,998
 $1,201,769
 $735,404
 $3,670,171
Interconnection532,163
 138,874
 130,928
 801,965
Managed infrastructure75,595
 118,685
 85,352
 279,632
Other (1)
16,570
 8,164
 
 24,734
Recurring revenues2,357,326
 1,467,492
 951,684
 4,776,502
Non-recurring revenues127,408
 95,145
 72,599
 295,152
Total$2,484,734
 $1,562,637
 $1,024,283
 $5,071,654
(1)
Includes some leasing and hedging activities. For further information on revenue recognition, see Note 1 and Note 2 above.
 Twelve Months Ended December 31, 2017
 Americas EMEA Asia-Pacific Total
Colocation (1)
$1,518,929
 $1,063,543
 $595,673
 $3,178,145
Interconnection469,268
 104,891
 107,014
 681,173
Managed infrastructure68,937
 88,122
 88,110
 245,169
Other (1)
5,218
 10,415
 
 15,633
Recurring revenues2,062,352
 1,266,971
 790,797
 4,120,120
Non-recurring revenues110,408
 79,285
 58,615
 248,308
Total$2,172,760
 $1,346,256
 $849,412
 $4,368,428
(1)
Includes some leasing and hedging activities. For further information on revenue recognition, see Note 1 and Note 2 above.
 Twelve Months Ended December 31, 2016
 Americas EMEA Asia-Pacific Total
Colocation (1)
$1,161,665
 $941,848
 $543,581
 $2,647,094
Interconnection374,655
 85,869
 82,521
 543,045
Managed infrastructure53,404
 67,553
 89,335
 210,292
Other (1)
3,360
 11,382
 2,201
 16,943
Recurring revenues1,593,084
 1,106,652
 717,638
 3,417,374
Non-recurring revenues86,465
 64,687
 43,463
 194,615
Total$1,679,549
 $1,171,339
 $761,101
 $3,611,989
(1)
Includes some leasing and hedging activities. For further information on revenue recognition, see Note 1 and Note 2 above.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



The Company's chief operating decision-maker evaluates performance, makes operating decisions and allocates resources based on the Company’sCompany's revenues and adjusted EBITDA performance both on a consolidated basis and these three reportable segments. The Company defines adjusted EBITDA as income or loss from operations plusexcluding depreciation, amortization, accretion, stock-based compensation expense, restructuring charges, impairment charges, acquisition costs and gain on asset sales as presented below for the years ended December 31 (in thousands):
2016 2015 20142018 2017 2016
Adjusted EBITDA:          
Americas$787,311
 $698,604
 $635,007
$1,183,831
 $1,034,694
 $787,311
EMEA494,263
 318,561
 269,222
698,280
 582,697
 494,263
Asia-Pacific375,900
 254,462
 209,662
531,129
 434,650
 375,900
Total adjusted EBITDA1,657,474
 1,271,627
 1,113,891
2,413,240
 2,052,041
 1,657,474
Depreciation, amortization and accretion expense(843,510) (528,929) (484,129)(1,226,741) (1,028,892) (843,510)
Stock-based compensation expense(156,148) (133,633) (117,990)(180,716) (175,500) (156,148)
Acquisitions costs(64,195) (41,723) (2,506)(34,413) (38,635) (64,195)
Impairment charges(7,698) 
 

 
 (7,698)
Gain on asset sales32,816
 
 
6,013
 
 32,816
Income from operations$618,739
 $567,342
 $509,266
$977,383
 $809,014
 $618,739
The Company provides the following segment disclosures related to its continuing operations as follows for the years ended December 31 (in thousands):
2016 2015 20142018 2017 2016
Total revenues:     
Americas(1)
$1,679,549
 $1,512,535
 $1,376,103
EMEA1,171,339
 698,807
 637,265
Asia-Pacific761,101
 514,525
 430,408
$3,611,989
 $2,725,867
 $2,443,776
     
Total depreciation and amortization:     
Depreciation and amortization:     
Americas$319,202
 $278,216
 $261,018
$636,214
 $515,726
 $319,202
EMEA313,291
 117,655
 114,511
355,895
 316,250
 313,291
Asia-Pacific204,714
 129,709
 106,162
235,380
 210,504
 204,714
$837,207
 $525,580
 $481,691
Total$1,227,489
 $1,042,480
 $837,207
          
Capital expenditures:          
Americas$503,855
 $401,685
 $333,315
$773,514
 $621,158
 $503,855
EMEA400,642
 202,322
 151,634
884,790
 555,346
 400,642
Asia-Pacific208,868
 264,113
 175,254
437,870
 202,221
 208,868
$1,113,365
 $868,120
 $660,203
Total$2,096,174
 $1,378,725
 $1,113,365

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)



__________________________
(1)Includes revenues of $1,549,819, $1,404,648 and $1,257,661, respectively, attributed to the U.S. for the years ended December 31, 2016, 2015 and 2014.
The Company’sCompany's long-lived assets are located in the following geographic areas as of December 31 (in thousands):
2016 20152018 2017
Americas (1)
$3,339,518
 $3,025,450
$5,010,507
 $4,425,077
EMEA2,355,943
 1,157,304
3,726,596
 3,265,088
Asia-Pacific1,503,749
 1,423,682
2,288,917
 1,704,437
$7,199,210
 $5,606,436
Total long-lived assets$11,026,020
 $9,394,602
_________________________
(1)
Includes $3,012,307$4.6 billion and $2,781,924,$4.0 billion, respectively, of long-lived assets attributed to the U.S. as of December 31, 20162018 and 2015.2017.
The following table presents revenue information on a service basis for the year ended December 31, 2016 and retrospective adjustments to revenue information on a services basis for the years ended December 31, 2015 and 2014 (in thousands):
 2016 2015 2014
Colocation$2,647,094
 $2,019,875
 $1,823,992
Interconnection543,045
 441,749
 379,007
Managed infrastructure210,292
 96,836
 104,455
Rental16,943
 10,681
 10,336
Recurring revenues3,417,374
 2,569,141
 2,317,790
Non-recurring revenues194,615
 156,726
 125,986
 $3,611,989
 $2,725,867
 $2,443,776

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18.     Subsequent Events
On January 6, 2017, the Company borrowed the full amount of the €1,000,000,000 Term B-2 Loan. The Term B-2 Loan will bear interest at an index rate based on EURIBOR plus a margin of 3.25%. No original issue discount is applicable to the Term B-2 Loan. The Term B-2 Loan must be repaid in equal quarterly installments of 0.25% of the original principal amount of the Term B-2 Loan starting in the second quarter of 2017, with the remaining amount outstanding to be repaid in full on the seventh anniversary of the funding date of the Term B-2 Loan.
On January 7, 2017, the Company entered into a purchase agreement with IO International Holdings LLC for the purchase of the entire issued share capital of IO Europe Limited for approximately $36,680,000 in cash. The transaction closed on February 3, 2017. The Company is evaluating the accounting for the purchase of IO Europe Limited.
18.Subsequent Events
On February 15, 2017,13, 2019, the Company's Board of Directors declared a quarterly cash dividend of $2.00$2.46 per share, which is payable on March 22, 201720, 2019 to the Company’sCompany's common stockholders of record as of the close of business on February 27, 2017.2019.

On January 11, 2019, the Company entered into cross-currency swaps where the Company receives a fixed amount of U.S. Dollars and pays a fixed amount of Euros, with a total notional amount of $750 million and maturity dates in April 2022, January 2024 and January 2025. These cross-currency swaps are designated as hedges of the Company's net investment in its European operations and changes in the fair value of these swaps will be recognized as a component of accumulated other comprehensive income (loss) in the consolidated balance sheet. Time value will be excluded from the assessment of effectiveness and the amount of interest paid or received on the swaps will be recognized as an adjustment to interest expense in earnings over the life of the swaps.
19.     Quarterly Financial Information (Unaudited)
19.Quarterly Financial Information (Unaudited)
The Company believes that period-to-period comparisons of its financial results should not be relied upon as an indication of future performance. The Company’sCompany's revenues and results of operations have been subject to significant fluctuations, particularly on a quarterly basis, and the Company’sCompany's revenues and results of operations could fluctuate significantly quarter-to-quarter and year-to-year. Significant quarterly fluctuations in revenues will cause fluctuations in the Company’sCompany's cash flows and the cash and cash equivalents and accounts receivable accounts on the Company’sCompany's consolidated balance sheet. Causes of such fluctuations may include the volume and timing of new orders and renewals, the timing of the opening of new IBX data centers, the sales cycle for the Company’sCompany's offerings, the introduction of new offerings, changes in prices and pricing models, trends in the internet infrastructure industry, general economic conditions, extraordinary events such as acquisitions or litigation and the occurrence of unexpected events.
The unaudited quarterly financial information presented below has been prepared by the Company and reflects all adjustments, consisting only of normal recurring adjustments, which in the opinion of management are necessary to present fairly the financial position and results of operations for the interim periods presented.

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The following tables present selected quarterly information (in thousands, except per share data):
 2016
 Quarters Ended
 March 31 June 30 September 30 December 31
Revenues$844,156
 $900,510
 $924,676
 $942,647
Gross profit416,476
 443,543
 454,374
 476,726
Net income (loss)(31,111) 44,711
 51,450
 61,750
Comprehensive income (loss)61,394
 (182,521) (18,533) (173,623)
EPS       
Basic EPS(0.46) 0.64
 0.73
 0.86
Diluted EPS(0.46) 0.64
 0.72
 0.86
 2018
 Quarters Ended
 March 31 June 30 September 30 December 31
Revenues$1,215,877
 $1,261,943
 $1,283,751
 $1,310,083
Gross profit593,447
 610,142
 623,442
 639,148
Net income62,894
 67,618
 124,825
 110,022
        
Earnings per share:       
Basic0.79
 0.85
 1.56
 1.37
Diluted0.79
 0.85
 1.55
 1.36
 2015
 Quarters Ended
 March 31 June 30 September 30 December 31
Revenues$643,174
 $665,582
 $686,649
 $730,462
Gross profit344,861
 349,825
 361,181
 378,494
Net income76,452
 59,459
 41,132
 10,731
Comprehensive income (loss)(59,141) 104,323
 (23,707) (10,317)
EPS       
Basic EPS1.35
 1.04
 0.72
 0.18
Diluted EPS1.34
 1.03
 0.71
 0.18
 2017
 Quarters Ended
 March 31 June 30 September 30 December 31
Revenues$949,525
 $1,066,421
 $1,152,261
 $1,200,221
Gross profit480,564
 544,218
 569,901
 580,596
Net income42,062
 45,805
 79,900
 65,215
        
Earnings per share:       
Basic0.58
 0.59
 1.02
 0.83
Diluted0.57
 0.58
 1.02
 0.82

EQUINIX INC.
SCHEDULE III-III - SCHEDULE OF REAL ESTATE AND ACCUMULATED DEPRECIATION
DECEMBER 31, 20162018
(Dollars in Thousands)
 
Initial Costs to Company (1)
            Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Accumulated Depreciation Date of Construction 
Date of Acquisition or Lease (3)
Americas:                   
AT1 ATLANTA    120,368  120,368 (33,293) N/A 2010
AT2 ATLANTA    41,845  41,845 (16,871) N/A 2010
AT3 ATLANTA    3,935  3,935 (1,257) N/A 2010
BO1 BOSTON (METRO)    11,332  11,332 (5,999) N/A 2010
CH1 CHICAGO (METRO)    155,387  155,387 (99,289) 2001 1999
CH2 CHICAGO (METRO)    104,108  104,108 (48,677) 2005 2005
CH3 CHICAGO (METRO) 9,759  351 229,398 10,110 229,398 (88,929) 2007 2006
CH4 CHICAGO (METRO)    21,566  21,566 (8,181) 2010 2009
DA1 DALLAS    73,407  73,407 (46,642) 2000 2000
DA2 DALLAS    78,681  78,681 (17,561) 2011 2010
DA3 DALLAS    85,099  85,099 (25,993) N/A 2010
DA4 DALLAS    17,421  17,421 (7,702) N/A 2010
DA6 DALLAS  20,522  83,115  103,637 (11,130) 2013 2012
DA7 DALLAS    26,431  26,431 (2,351) 2015 2015
DC1 WASHINGTON, DC (METRO)    5,120  5,120 (363) 2007 1999
DC2 WASHINGTON, DC (METRO)   5,047 153,115 5,047 153,115 (126,299) 1999 1999
DC3 WASHINGTON, DC (METRO)  37,451  52,846  90,297 (46,073) 2004 2004
DC4 WASHINGTON, DC (METRO) 1,906 7,272  71,942 1,906 79,214 (46,128) 2007 2005
DC5 WASHINGTON, DC (METRO) 1,429 4,983  88,407 1,429 93,390 (52,407) 2008 2005
DC6 WASHINGTON, DC (METRO) 1,429 5,082  86,711 1,429 91,793 (35,116) 2010 2005
DC7 WASHINGTON, DC (METRO)    20,605  20,605 (10,099) N/A 2010
DC8 WASHINGTON, DC (METRO)    5,186  5,186 (4,614) N/A 2010
DC10 WASHINGTON, DC (METRO)  44,601  70,790  115,391 (30,595) 2012 2011
DC11 WASHINGTON, DC (METRO) 1,429 5,082  165,021 1,429 170,103 (20,495) 2013 2005
 
Initial Costs to Company (1)
 Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 
Accumulated Depreciation (3)
 Date of Construction 
Date of Acquisition or Lease (4)
Americas:                   
AT1 ATLANTA (METRO)    125,872  125,872 (50,601) N/A 2010
AT2 ATLANTA (METRO)    41,058  41,058 (21,054) N/A 2010
AT3 ATLANTA (METRO)    4,469  4,469 (2,128) N/A 2010
AT4 ATLANTA (METRO) 5,400 20,209  7,588 5,400 27,797 (6,133) N/A 2017
AT5 ATLANTA (METRO)  5,011  2,170  7,181 (2,248) N/A 2017
BG1 BOGOTÁ (METRO), COLOMBIA  8,779 929 2,527 929 11,306 (1,866) N/A 2017
BO1 BOSTON (METRO)    11,026  11,026 (6,920) N/A 2010
BO2 BOSTON (METRO) 2,500 30,383  2,800 2,500 33,183 (6,602) N/A 2017
CH1 CHICAGO (METRO)    146,693  146,693 (89,280) 2001 1999
CH2 CHICAGO (METRO)    108,106  108,106 (55,969) 2005 2005
CH3 CHICAGO (METRO) 9,759  351 295,893 10,110 295,893 (106,445) 2007 2006
CH4 CHICAGO (METRO)    22,148  22,148 (11,315) 2010 2009
CH7 CHICAGO (METRO) 670 10,564  2,029 670 12,593 (2,357) N/A 2017
CU1 CULPEPER (METRO) 1,019 37,581  1,315 1,019 38,896 (6,618) N/A 2017
CU2 CULPEPER (METRO) 1,244 48,000  1,357 1,244 49,357 (7,200) N/A 2017
CU3 CULPEPER (METRO) 1,088 37,387  555 1,088 37,942 (5,605) N/A 2017
CU4 CULPEPER (METRO) 1,372 27,832  31,364 1,372 59,196 (3,398) N/A 2017
DA1 DALLAS (METRO)    66,119  66,119 (37,704) 2000 2000
DA2 DALLAS (METRO)    79,384  79,384 (25,148) 2011 2010
DA3 DALLAS (METRO)    95,891  95,891 (33,723) N/A 2010
DA4 DALLAS (METRO)    17,205  17,205 (8,470) N/A 2010
DA6 DALLAS (METRO)  20,522  139,630  160,152 (22,692) 2013 2012
DA7 DALLAS (METRO)    28,006  28,006 (7,670) 2015 2015
DA9 DALLAS (METRO) 610 15,398  699 610 16,097 (2,963) N/A 2017
DA10 DALLAS (METRO)  117  4,633  4,750 (1,704) N/A 2017
INFOMART BUILDING DALLAS (METRO) 24,380 337,643  5,619 24,380 343,262 (8,353) N/A 2018
DC1 WASHINGTON, DC (METRO)    3,247  3,247 (825) 2007 1999
DC2 WASHINGTON, DC (METRO)   5,047 121,519 5,047 121,519 (93,855) 1999 1999
DC3 WASHINGTON, DC (METRO)  37,451  49,266  86,717 (48,753) 2004 2004
DC4 WASHINGTON, DC (METRO) 1,906 7,272  71,813 1,906 79,085 (50,787) 2007 2005
DC5 WASHINGTON, DC (METRO) 1,429 4,983  88,456 1,429 93,439 (60,307) 2008 2005

 
Initial Costs to Company (1)
            Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Accumulated Depreciation Date of Construction 
Date of Acquisition or Lease (3)
DE1 DENVER (METRO)    9,978  9,978 (5,968) N/A 2010
LA1 LOS ANGELES    110,624  110,624 (60,332) 2000 1999
LA2 LOS ANGELES    11,861  11,861 (9,870) 2001 2000
LA3 EL SEGUNDO  34,727 3,959 21,931 3,959 56,658 (42,651) 2005 2005
LA4 EL SEGUNDO 19,333 137,630  28,247 19,333 165,877 (60,398) 2009 2009
MI2 MIAMI (METRO)    22,239  22,239 (10,570) N/A 2010
MI3 MIAMI (METRO)    29,573  29,573 (7,983) 2012 2012
NY1 NEWARK    79,857  79,857 (42,647) 1999 1999
NY2 NEW YORK CITY (METRO)   17,859 194,181 17,859 194,181 (120,724) 2002 2000
NY4 NEW YORK CITY (METRO)    330,754  330,754 (153,480) 2007 2006
NY5 NEW YORK CITY (METRO)    243,296  243,296 (38,838) 2012 2010
NY6 NEW YORK CITY (METRO)    73,266  73,266 (5,587) 2015 2010
NY7 NEW YORK CITY (METRO)  24,660  138,865  163,525 (88,677) N/A 2010
NY8 NEW YORK CITY (METRO)    12,159  12,159 (6,118) N/A 2010
NY9 NEW YORK CITY (METRO)    53,840  53,840 (28,065) N/A 2010
PH1 PHILADELPHIA    43,979  43,979 (10,365) N/A 2010
SE2 SEATTLE    29,242  29,242 (19,757) N/A 2010
SE3 SEATTLE  1,760  94,947  96,707 (22,692) 2013 2011
SV1 SILICON VALLEY (METRO)   15,545 159,286 15,545 159,286 (104,600) 1999 1999
SV2 SILICON VALLEY (METRO)    147,154  147,154 (68,545) 2003 2003
SV3 SILICON VALLEY (METRO)    43,738  43,738 (38,220) 2004 1999
SV4 SILICON VALLEY (METRO)    25,941  25,941 (19,003) 2005 2005
SV5 SILICON VALLEY (METRO) 6,238 98,991  88,737 6,238 187,728 (43,544) 2010 2010
SV6 SILICON VALLEY (METRO)  15,585  21,811  37,396 (22,079) N/A 2010
SV8 SILICON VALLEY (METRO)    48,939  48,939 (21,363) N/A 2010
SV12 SILICON VALLEY (METRO) 20,535  (222) 2,277 20,313 2,277  2015 2015
TR1 TORONTO, CANADA    90,158  90,158 (19,895) N/A 2010
TR2 TORONTO, CANADA  21,113  76,387  97,500 (7,133) 2015 2015
RJ1 RIO DE JANEIRO, BRAZIL    26,361  26,361 (17,933) 2011 2011
RJ2 RIO DE JANEIRO, BRAZIL  2,012  34,237  36,249 (10,145) 2013 2012
SP1 SÃO PAULO, BRAZIL  10,188  23,181  33,369 (19,816) 2011 2011
 
Initial Costs to Company (1)
 Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 
Accumulated Depreciation (3)
 Date of Construction 
Date of Acquisition or Lease (4)
DC6 WASHINGTON, DC (METRO) 1,429 5,082  89,795 1,429 94,877 (44,365) 2010 2005
DC7 WASHINGTON, DC (METRO)    19,765  19,765 (11,629) N/A 2010
DC8 WASHINGTON, DC (METRO)    4,901  4,901 (4,589) N/A 2010
DC10 WASHINGTON, DC (METRO)  44,601  73,924  118,525 (52,029) 2012 2011
DC11 WASHINGTON, DC (METRO) 1,429 5,082  179,753 1,429 184,835 (40,450) 2013 2005
DC12 WASHINGTON, DC (METRO)  101,783  59,152  160,935 (8,220) 2017 2017
DC13 WASHINGTON, DC (METRO) 5,500 25,423  3,477 5,500 28,900 (6,928) N/A 2017
DC14 WASHINGTON, DC (METRO) 2,560 33,511  614 2,560 34,125 (5,509) N/A 2017
DC97 WASHINGTON, DC (METRO)  2,021  631  2,652 (692) N/A 2017
DE1 DENVER (METRO)    9,985  9,985 (7,988) N/A 2010
DE2 DENVER (METRO) 5,240 23,053  27,744 5,240 50,797 (8,099) N/A 2017
HO1 HOUSTON (METRO) 1,440 23,780  31,078 1,440 54,858 (6,880) N/A 2017
LA1 LOS ANGELES (METRO)    106,877  106,877 (63,323) 2000 1999
LA2 LOS ANGELES (METRO)    10,785  10,785 (8,654) 2001 2000
LA3 LOS ANGELES (METRO)  34,727 3,959 21,461 3,959 56,188 (44,967) 2005 2005
LA4 LOS ANGELES (METRO) 19,333 137,630  33,753 19,333 171,383 (78,571) 2009 2009
LA7 LOS ANGELES (METRO) 7,800 33,621  5,204 7,800 38,825 (6,166) N/A 2017
MI1 MIAMI (METRO) 18,920 127,194  88,736 18,920 215,930 (25,966) N/A 2017
MI2 MIAMI (METRO)    23,391  23,391 (12,178) N/A 2010
MI3 MIAMI (METRO)    32,056  32,056 (12,752) 2012 2012
MI6 MIAMI (METRO) 4,750 23,017  5,916 4,750 28,933 (5,859) N/A 2017
NY1 NEW YORK (METRO)    70,595  70,595 (38,536) 1999 1999
NY2 NEW YORK (METRO)   17,859 198,809 17,859 198,809 (125,571) 2002 2000
NY4 NEW YORK (METRO)    346,128  346,128 (176,708) 2007 2006
NY5 NEW YORK (METRO)    259,184  259,184 (63,058) 2012 2010
NY6 NEW YORK (METRO)    73,464  73,464 (11,734) 2015 2010
NY7 NEW YORK (METRO)  24,660  169,698  194,358 (115,229) N/A 2010
NY8 NEW YORK (METRO)    11,650  11,650 (7,426) N/A 2010
NY9 NEW YORK (METRO)    51,918  51,918 (31,834) N/A 2010
NY11 NEW YORK (METRO) 2,050 58,717  11,378 2,050 70,095 (11,926) N/A 2017
NY12 NEW YORK (METRO) 3,460 10,380  1,631 3,460 12,011 (2,413) N/A 2017
NY13 NEW YORK (METRO)  31,603  4,170  35,773 (6,982) N/A 2017
PH1 PHILADELPHIA (METRO)    43,380  43,380 (14,553) N/A 2010
RJ1 RIO DE JANEIRO (METRO), BRAZIL    20,167  20,167 (16,059) 2011 2011
RJ2 RIO DE JANEIRO (METRO), BRAZIL  2,012 1,695 51,849 1,695 53,861 (14,380) 2013 2012

 
Initial Costs to Company (1)
            Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Accumulated Depreciation Date of Construction 
Date of Acquisition or Lease (3)
SP2 SÃO PAULO, BRAZIL    73,615  73,615 (33,839) 2011 2011
OTHERS (4)
 52,630 18,709 934 185,212 53,564 203,921 (2,202) Various Various
                    
EMEA:                   
AM1 AMSTERDAM, THE NETHERLANDS    71,764  71,764 (23,787) 2008 2008
AM2 AMSTERDAM, THE NETHERLANDS    53,661  53,661 (17,868) 2010 2008
AM3 AMSTERDAM, THE NETHERLANDS  27,099  92,654  119,753 (22,758) 2012 2011
AM5 AMSTERDAM, THE NETHERLANDS  92,199  1,029  93,228 (5,838) N/A 2016
AM6 AMSTERDAM, THE NETHERLANDS 6,616 50,876  3,872 6,616 54,748 (2,691) N/A 2016
AM7 AMSTERDAM, THE NETHERLANDS  7,397  363  7,760 (973) N/A 2016
AM8 AMSTERDAM, THE NETHERLANDS    9,291  9,291 (1,677) N/A 2016
DB1 DUBLIN, IRELAND    1,852  1,852 (164) N/A 2016
DB2 DUBLIN, IRELAND  12,460  671  13,131 (1,706) N/A 2016
DB3 DUBLIN, IRELAND 3,334 54,387  3,507 3,334 57,894 (3,208) N/A 2016
DB4 DUBLIN, IRELAND  26,875  9,899  36,774 (1,163) N/A 2016
DU1 DÜSSELDORF, GERMANY    21,330  21,330 (17,813) 2001 2000
DX1 DUBAI, UNITED ARAB EMIRATES    45,710  45,710 (5,501) 2012 2008
EN1 ENSCHEDE, THE NETHERLANDS    22,408  22,408 (13,720) 2008 2008
FR1 FRANKFURT (METRO), GERMANY    7,173  7,173 (6,792) N/A 2007
FR2 FRANKFURT (METRO), GERMANY   11,212 198,157 11,212 198,157 (73,449) N/A 2007
FR3 FRANKFURT (METRO), GERMANY   1,967 4,679 1,967 4,679 (1,178) N/A 2007
FR4 FRANKFURT (METRO), GERMANY 11,578 9,307  51,650 11,578 60,957 (14,570) 2009 2009
FR5 FRANKFURT (METRO), GERMANY30,310   3,716 109,540 3,716 109,540 (20,552) 2012 2012
FR7 FRANKFURT (METRO), GERMANY  43,634  1,035  44,669 (4,492) N/A 2016
GV1 GENEVA (METRO), SWITZERLAND    5,846  5,846 (4,232) 2004 2004
 
Initial Costs to Company (1)
 Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 
Accumulated Depreciation (3)
 Date of Construction 
Date of Acquisition or Lease (4)
SE2 SEATTLE (METRO)    27,856  27,856 (23,013) N/A 2010
SE3 SEATTLE (METRO)  1,760  97,454  99,214 (34,694) 2013 2011
SE4 SEATTLE (METRO) 4,000 12,903  13,032 4,000 25,935 (3,001) N/A 2017
SP1 SÃO PAULO (METRO), BRAZIL  10,188  22,319  32,507 (23,450) 2011 2011
SP2 SÃO PAULO (METRO), BRAZIL    68,952  68,952 (50,007) 2011 2011
SP3 SÃO PAULO (METRO), BRAZIL 10,368 72,997  23,900 10,368 96,897 (10,451) 2017 2017
SP4 SÃO PAULO (METRO), BRAZIL  22,027    22,027 (4,936) N/A 2017
SV1 SILICON VALLEY (METRO)   15,545 142,285 15,545 142,285 (89,903) 1999 1999
SV2 SILICON VALLEY (METRO)    151,278  151,278 (81,688) 2003 2003
SV3 SILICON VALLEY (METRO)    40,448  40,448 (35,541) 2004 1999
SV4 SILICON VALLEY (METRO)    24,946  24,946 (20,473) 2005 2005
SV5 SILICON VALLEY (METRO) 6,238 98,991  94,163 6,238 193,154 (63,716) 2010 2010
SV6 SILICON VALLEY (METRO)  15,585  29,146  44,731 (28,862) N/A 2010
SV8 SILICON VALLEY (METRO)    51,200  51,200 (29,120) N/A 2010
SV10 SILICON VALLEY (METRO) 12,646 123,594  81,555 12,646 205,149 (9,252) 2017 2017
SV12 SILICON VALLEY (METRO) 20,313   4,623 20,313 4,623  2015 2015
SV13 SILICON VALLEY (METRO)  3,828  85  3,913 (1,617) N/A 2017
SV14 SILICON VALLEY (METRO) 3,638 5,503  3,375 3,638 8,878 (1,006) N/A 2017
SV15 SILICON VALLEY (METRO) 7,651 23,060  838 7,651 23,898 (3,730) N/A 2017
SV16 SILICON VALLEY (METRO) 4,271 15,018  646 4,271 15,664 (2,813) N/A 2017
SV17 SILICON VALLEY (METRO)  17,493  2,034  19,527 (6,977) N/A 2017
TR1 TORONTO (METRO), CANADA    87,819  87,819 (25,974) N/A 2010
TR2 TORONTO (METRO), CANADA  21,113  94,362  115,475 (17,923) 2015 2015
OTHERS (5)
 78,242 21,304  39,800 78,242 61,104 (5,002) Various Various
                    
EMEA:                   
AD1 ABU DHABI (METRO), UNITED ARAB EMIRATES    319  319 (56) N/A 2017
AM1 AMSTERDAM (METRO), THE NETHERLANDS    87,687  87,687 (37,861) 2008 2008
AM2 AMSTERDAM (METRO), THE NETHERLANDS    80,258  80,258 (27,008) 2010 2008
AM3 AMSTERDAM (METRO), THE NETHERLANDS  27,099  126,102  153,201 (43,860) 2012 2011
AM4 AMSTERDAM (METRO), THE NETHERLANDS    152,650  152,650 (6,626) 2016 2016
AM5 AMSTERDAM (METRO), THE NETHERLANDS  92,199  14,059  106,258 (19,576) N/A 2016

 
Initial Costs to Company (1)
            Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Accumulated Depreciation Date of Construction 
Date of Acquisition or Lease (3)
GV2 GENEVA (METRO), SWITZERLAND    21,282  21,282 (13,709) 2010 2009
HE1 HELSINKI (METRO), FINLAND    2,732  2,732 (632) N/A 2016
HE2 HELSINKI (METRO), FINLAND    1,445  1,445 (524) N/A 2016
HE3 HELSINKI (METRO), FINLAND    8,765  8,765 (2,118) N/A 2016
HE4 HELSINKI (METRO), FINLAND  29,092  3,785  32,877 (2,824) N/A 2016
HE5 HELSINKI (METRO), FINLAND  7,564  64  7,628 (1,019) N/A 2016
HE6 HELSINKI (METRO), FINLAND  17,204  10,067  27,271 (540) N/A 2016
IS1 ISTANBUL (METRO), TURKEY    7,046  7,046 (2,126) N/A 2016
LD1 LONDON (METRO), UNITED KINGDOM    2,352  2,352 (2,154) 2000 2000
LD3 LONDON (METRO), UNITED KINGDOM    14,864  14,864 (9,975) 2005 2000
LD4 LONDON (METRO), UNITED KINGDOM  23,044  56,232  79,276 (30,704) 2007 2007
LD5 LONDON (METRO), UNITED KINGDOM  16,412  162,639  179,051 (51,491) 2010 2010
LD6 LONDON (METRO), UNITED KINGDOM    103,276  103,276 (6,038) 2015 2013
LD8 LONDON (METRO), UNITED KINGDOM  107,544  4,834  112,378 (7,598) N/A 2016
LD9 LONDON (METRO), UNITED KINGDOM  181,431  1,667  183,098 (11,741) N/A 2016
MA1 MANCHESTER, UNITED KINGDOM    4,254  4,254 (797) N/A 2016
MA2 MANCHESTER, UNITED KINGDOM    6,619  6,619 (952) N/A 2016
MA3 MANCHESTER, UNITED KINGDOM  44,931  316  45,247 (4,305) N/A 2016
MA4 MANCHESTER, UNITED KINGDOM  6,697  65  6,762 (748) N/A 2016
ML1 MILAN (METRO), ITALY    806  806 (742) 2011 2011
ML2 MILAN (METRO), ITALY    5,650  5,650 (2,676) N/A 2016
ML3 MILAN (METRO), ITALY    11,937  11,937 (5,373) N/A 2016
ML4 MLAN (METRO), ITALY    6,870  6,870 (1,346) N/A 2016
MU1 MUNICH, GERMANY    14,818  14,818 (11,501) N/A 2007
 
Initial Costs to Company (1)
 Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 
Accumulated Depreciation (3)
 Date of Construction 
Date of Acquisition or Lease (4)
AM6 AMSTERDAM (METRO), THE NETHERLANDS 6,616 50,876 584 65,278 7,200 116,154 (12,138) N/A 2016
AM7 AMSTERDAM (METRO), THE NETHERLANDS  7,397  51,535  58,932 (2,378) N/A 2016
AM8 AMSTERDAM (METRO), THE NETHERLANDS    11,125  11,125 (3,364) N/A 2016
BA1 BARCELONA (METRO), SPAIN  9,443  1,843  11,286 (1,495) N/A 2017
DB1 DUBLIN (METRO), IRELAND    3,389  3,389 (1,495) N/A 2016
DB2 DUBLIN (METRO), IRELAND  12,460  4,384  16,844 (4,963) N/A 2016
DB3 DUBLIN (METRO), IRELAND 3,334 54,387 294 14,917 3,628 69,304 (11,434) N/A 2016
DB4 DUBLIN (METRO), IRELAND  26,875  15,608  42,483 (5,134) N/A 2016
DU1 DÜSSELDORF (METRO), GERMANY   8,287 29,641 8,287 29,641 (18,951) 2001 2000
DX1 DUBAI (METRO), UNITED ARAB EMIRATES    87,891  87,891 (16,550) 2012 2008
DX2 DUBAI (METRO), UNITED ARAB EMIRATES    569  569 (100) N/A 2017
EN1 ENSCHEDE (METRO), THE NETHERLANDS    30,140  30,140 (18,843) 2008 2008
FR1 FRANKFURT (METRO), GERMANY    4,189  4,189 (3,679) N/A 2007
FR2 FRANKFURT (METRO), GERMANY   12,547 425,473 12,547 425,473 (110,194) N/A 2007
FR4 FRANKFURT (METRO), GERMANY 11,578 9,307 1,023 76,784 12,601 86,091 (25,959) 2009 2009
FR5 FRANKFURT (METRO), GERMANY30,310   4,044 164,611 4,044 164,611 (34,108) 2012 2012
FR6 FRANKFURT (METRO), GERMANY    135,960  135,960 (8,885) 2016 2016
FR7 FRANKFURT (METRO), GERMANY  43,634  20,621  64,255 (13,072) N/A 2016
GV1 GENEVA (METRO), SWITZERLAND    8,798  8,798 (3,634) 2004 2004
GV2 GENEVA (METRO), SWITZERLAND    23,328  23,328 (19,817) 2010 2009
HE1 HELSINKI (METRO), FINLAND    3,486  3,486 (1,887) N/A 2016
HE2 HELSINKI (METRO), FINLAND    1,554  1,554 (1,297) N/A 2016
HE3 HELSINKI (METRO), FINLAND    13,019  13,019 (7,227) N/A 2016
HE4 HELSINKI (METRO), FINLAND  29,092  6,383  35,475 (9,726) N/A 2016
HE5 HELSINKI (METRO), FINLAND  7,564  5,089  12,653 (2,991) N/A 2016
HE6 HELSINKI (METRO), FINLAND  17,204 1,604 25,004 1,604 42,208 (5,811) N/A 2016
HE7 HELSINKI (METRO), FINLAND 7,348 6,946  3,573 7,348 10,519 (537) N/A 2018

 
Initial Costs to Company (1)
            Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Accumulated Depreciation Date of Construction 
Date of Acquisition or Lease (3)
MU3 MUNICH, GERMANY    726  726 (38) 2010 2010
PA1 PARIS (METRO), FRANCE    21,527  21,527 (17,093) N/A 2007
PA2 & PA 3 PARIS (METRO), FRANCE  29,615 23,723 240,675 23,723 270,290 (75,980) 2010 2007
PA4 PARIS (METRO), FRANCE 1,701 9,503  127,215 1,701 136,718 (26,823) 2012 2011
PA5 PARIS (METRO), FRANCE  16,554  843  17,397 (1,575) N/A 2016
PA6 PARIS (METRO), FRANCE    56,322  56,322 (5,006) N/A 2016
PA7 PARIS (METRO), FRANCE    12,300  12,300 (1,951) N/A 2016
SK1 STOCKHOLM, (METRO), SWEDEN  15,495  574  16,069 (2,216) N/A 2016
SK2 STOCKHOLM, (METRO), SWEDEN  80,148  251  80,399 (4,678) N/A 2016
SK3 STOCKHOLM, (METRO), SWEDEN    13,167  13,167 (858) N/A 2016
SO1 SOFIA, BULGARIA  5,236  312  5,548 (353) N/A 2016
WA1 WARSZAWA, POLAND  5,950  592  6,542 (920) N/A 2016
WA2 WARSZAWA, POLAND  4,709  6,615  11,324 (770) N/A 2016
ZH1 ZURICH (METRO), SWITZERLAND    5,457  5,457 (4,619) N/A 2007
ZH2 ZURICH (METRO), SWITZERLAND    5,460  5,460 (3,563) 2003 2002
ZH4 ZURICH (METRO), SWITZERLAND  11,284  24,868  36,152 (16,116) 2010 2009
ZH5 ZURICH (METRO), SWITZERLAND    37,232  37,232 (10,456) 2013 2009
ZW1 ZWOLLE, THE NETHERLANDS    7,331  7,331 (4,097) 2008 2008
OTHERS    3,019  3,019 (1,502) Various Various
                    
Asia-Pacific:                   
HK1 HONG KONG, CHINA    131,250  131,250 (65,402) N/A 2003
HK2 HONG KONG, CHINA    237,118  237,118 (51,447) 2011 2010
HK3 HONG KONG, CHINA    134,342  134,342 (44,062) N/A 2012
HK4 HONG KONG, CHINA    7,003  7,003 (3,963) N/A 2012
ME1 MELBOURNE, AUSTRALIA 15,341   66,103 15,341 66,103 (5,854) 2013 2013
OS1 OSAKA, JAPAN  14,876  37,851  52,727 (8,036) 2013 2013
OS2 OSAKA, JAPAN  103    103 (26) N/A 2015
 
Initial Costs to Company (1)
 Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 
Accumulated Depreciation (3)
 Date of Construction 
Date of Acquisition or Lease (4)
HH1 HAMBURG (METRO), GERMANY 3,612 5,360   3,612 5,360  N/A 2018
IS1 ISTANBUL (METRO), TURKEY    6,412  6,412 (4,416) N/A 2016
IL2 ISTANBUL (METRO), TURKEY 14,460 39,289  9,778 14,460 49,067 (1,646) N/A 2017
LD3 LONDON (METRO), UNITED KINGDOM    16,666  16,666 (13,366) 2005 2000
LD4 LONDON (METRO), UNITED KINGDOM  23,044  111,645  134,689 (38,277) 2007 2007
LD5 LONDON (METRO), UNITED KINGDOM  16,412  173,477  189,889 (76,880) 2010 2010
LD6 LONDON (METRO), UNITED KINGDOM    131,113  131,113 (18,714) 2015 2013
LD7 LONDON (METRO), UNITED KINGDOM    80,257  80,257 (4) 2018 2018
LD8 LONDON (METRO), UNITED KINGDOM  107,544  26,273  133,817 (22,468) N/A 2016
LD9 LONDON (METRO), UNITED KINGDOM  181,431  77,537  258,968 (36,890) N/A 2016
LD10 LONDON (METRO), UNITED KINGDOM  40,251  103,274  143,525 (6,805) N/A 2017
LS1 LISBON (METRO), PORTUGAL  7,374 3,540 2,036 3,540 9,410 (1,234) 2017 2017
MA1 MANCHESTER (METRO), UNITED KINGDOM    8,136  8,136 (2,674) N/A 2016
MA2 MANCHESTER (METRO), UNITED KINGDOM    10,038  10,038 (3,983) N/A 2016
MA3 MANCHESTER (METRO), UNITED KINGDOM  44,931  5,147  50,078 (14,266) N/A 2016
MA4 MANCHESTER (METRO), UNITED KINGDOM  6,697  1,639  8,336 (4,778) N/A 2016
MD1 MADRID (METRO), SPAIN  7,917    7,917 (1,766) N/A 2017
MD2 MADRID (METRO), SPAIN  40,952  13,829  54,781 (10,453) N/A 2017
ML2 MILAN (METRO), ITALY    18,270  18,270 (5,538) N/A 2016
ML3 MILAN (METRO), ITALY   3,639 39,064 3,639 39,064 (9,830) N/A 2016
ML4 MLAN (METRO), ITALY    8,218  8,218 (3,628) N/A 2016
MU1 MUNICH (METRO), GERMANY    23,757  23,757 (14,145) N/A 2007
MU3 MUNICH (METRO), GERMANY    2,525  2,525 (1,210) 2010 2010
PA1 PARIS (METRO), FRANCE    31,246  31,246 (21,338) N/A 2007
PA2 & PA3 PARIS (METRO), FRANCE  29,615 25,820 283,451 25,820 313,066 (112,946) 2010 2007
PA4 PARIS (METRO), FRANCE 1,701 9,503 150 226,529 1,851 236,032 (51,667) 2012 2011
PA5 PARIS (METRO), FRANCE  16,554  3,299  19,853 (4,455) N/A 2016
PA6 PARIS (METRO), FRANCE    64,821  64,821 (19,377) N/A 2016
PA7 PARIS (METRO), FRANCE    17,399  17,399 (5,632) N/A 2016

 
Initial Costs to Company (1)
            Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Accumulated Depreciation Date of Construction 
Date of Acquisition or Lease (3)
SG1 SINGAPORE    160,917  160,917 (104,697) N/A 2003
SG2 SINGAPORE    261,025  261,025 (99,403) 2008 2008
SG3 SINGAPORE  34,844  96,449  131,293 (10,360) 2013 2013
SH2 SHANGHAI, CHINA    3,482  3,482 (971) 2012 2012
SH3 SHANGHAI, CHINA  7,066  7,024  14,090 (3,512) 2012 2012
SH4 SHANGHAI, CHINA    1,657  1,657 (1,422) 2012 2012
SH5 SHANGHAI, CHINA  11,284  19,003  30,287 (6,010) 2012 2012
SY1 SYDNEY, AUSTRALIA    25,261  25,261 (14,036) N/A 2003
SY2 SYDNEY, AUSTRALIA  3,080  32,510  35,590 (18,795) 2008 2008
SY3 SYDNEY, AUSTRALIA  8,712  134,257  142,969 (42,948) 2010 2010
SY4 SYDNEY, AUSTRALIA    84,679  84,679 (2,300) 2015 2014
TY1 TOKYO, JAPAN    18,547  18,547 (10,787) 2000 2000
TY2 TOKYO, JAPAN    75,386  75,386 (57,738) 2007 2006
TY3 TOKYO, JAPAN    69,367  69,367 (23,762) 2010 2010
TY4 TOKYO, JAPAN    49,287  49,287 (10,658) 2012 2012
TY5 TOKYO, JAPAN  102  49,598  49,700 (2,045) 2014 2014
TY6 TOKYO, JAPAN  37,941  12,412  50,353 (8,663) N/A 2015
TY7 TOKYO, JAPAN  13,175  869  14,044 (2,759) N/A 2015
TY8 TOKYO, JAPAN  53,848  5,044  58,892 (7,016) N/A 2015
TY9 TOKYO, JAPAN  106,710  8,197  114,907 (15,450) N/A 2015
TY10 TOKYO, JAPAN  69,881  7,115  76,996 (5,707) N/A 2015
OTHERS    13,401  13,401 (4,661) Various Various
TOTAL LOCATIONS$30,310 $153,258 $1,788,637 $84,091 $7,829,825 $237,349 $9,618,462 $(3,175,972)    
 
Initial Costs to Company (1)
 Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 
Accumulated Depreciation (3)
 Date of Construction 
Date of Acquisition or Lease (4)
PA8 PARIS (METRO), FRANCE    47,649  47,649  2018 2018
SA1 SEVILLE (METRO), SPAIN  1,567    1,567 (905) N/A 2017
SK1 STOCKHOLM, (METRO), SWEDEN  15,495  6,283  21,778 (5,665) N/A 2016
SK2 STOCKHOLM, (METRO), SWEDEN  80,148 7,117 46,719 7,117 126,867 (14,764) N/A 2016
SK3 STOCKHOLM, (METRO), SWEDEN    14,556  14,556 (2,878) N/A 2016
SO1 SOFIA (METRO), BULGARIA  5,236  1,547  6,783 (1,270) N/A 2016
SO2 SOFIA (METRO), BULGARIA 2,775   8,814 2,775 8,814  N/A 2017
WA1 WARSAW (METRO), POLAND  5,950  7,138  13,088 (4,007) N/A 2016
WA2 WARSAW (METRO), POLAND  4,709  7,833  12,542 (2,546) N/A 2016
WA3 WARSAW (METRO), POLAND 2,819   6,705 2,819 6,705 (1) N/A 2017
ZH1 ZURICH (METRO), SWITZERLAND    12  12  N/A 2007
ZH2 ZURICH (METRO), SWITZERLAND    3,323  3,323 (2,543) 2003 2002
ZH4 ZURICH (METRO), SWITZERLAND  11,284  31,778  43,062 (26,376) 2010 2009
ZH5 ZURICH (METRO), SWITZERLAND   7,918 88,981 7,918 88,981 (18,350) 2013 2009
ZW1 ZWOLLE (METRO), THE NETHERLANDS    9,860  9,860 (5,925) 2008 2008
OTHERS (5)
 16,933 7,018 16,149 24,847 33,082 31,865 (4,005) Various Various
                    
Asia-Pacific:                   
AE1 ADELAIDE (METRO), AUSTRALIA 2,663 1,015  745 2,663 1,760 (148) N/A 2018
BR1 BRISBANE (METRO), AUSTRALIA 3,170 1,053  827 3,170 1,880 (68) N/A 2018
CA1 CANBERRA (METRO), AUSTRALIA  18,410  321  18,731 (573) N/A 2018
HK1 HONG KONG (METRO), CHINA    147,895  147,895 (87,393) N/A 2003
HK2 HONG KONG (METRO), CHINA    285,083  285,083 (99,612) 2011 2010
HK3 HONG KONG (METRO), CHINA    134,081  134,081 (60,527) N/A 2012
HK4 HONG KONG (METRO), CHINA    10,593  10,593 (5,818) N/A 2012
HK5 HONG KONG (METRO), CHINA  70,002  38,903  108,905 (4,225) 2017 2017
ME1 MELBOURNE (METRO), AUSTRALIA 14,977   81,609 14,977 81,609 (13,909) 2013 2013
ME2 MELBOURNE (METRO), AUSTRALIA    25,141  25,141  N/A 2018
__________________________
 
Initial Costs to Company (1)
 Costs Capitalized Subsequent to Acquisition or Lease Total Costs  
 Encumbrances Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 Land 
Buildings and Improvements (2)
 
Accumulated Depreciation (3)
 Date of Construction 
Date of Acquisition or Lease (4)
ME4 MELBOURNE (METRO), AUSTRALIA 3,437 84,175  2,499 3,437 86,674 (4,407) N/A 2018
ME5 MELBOURNE (METRO), AUSTRALIA 6,678 4,094  1,586 6,678 5,680 (445) N/A 2018
OS1 OSAKA (METRO), JAPAN  14,876  66,296  81,172 (18,931) 2013 2013
PE1 PERTH (METRO), AUSTRALIA 1,352 1,337  363 1,352 1,700 (64) N/A 2018
PE2 PERTH (METRO), AUSTRALIA  16,327  5,685  22,012 (1,129) N/A 2018
SG1 SINGAPORE (METRO)    177,270  177,270 (111,655) N/A 2003
SG2 SINGAPORE (METRO)    333,964  333,964 (164,156) 2008 2008
SG3 SINGAPORE (METRO)  34,844  196,081  230,925 (29,083) 2013 2013
SH2 SHANGHAI (METRO), CHINA    4,529  4,529 (1,643) 2012 2012
SH3 SHANGHAI (METRO), CHINA  7,066  10,137  17,203 (5,075) 2012 2012
SH5 SHANGHAI (METRO), CHINA  11,284  20,792  32,076 (9,650) 2012 2012
SH6 SHANGHAI (METRO), CHINA  16,545  25,353  41,898 (2) N/A 2017
SY1 SYDNEY (METRO), AUSTRALIA    25,435  25,435 (14,709) N/A 2003
SY2 SYDNEY (METRO), AUSTRALIA  3,080  32,721  35,801 (21,601) 2008 2008
SY3 SYDNEY (METRO), AUSTRALIA  8,712  140,590  149,302 (60,057) 2010 2010
SY4 SYDNEY (METRO), AUSTRALIA    142,633  142,633 (18,167) 2015 2014
SY5 SYDNEY (METRO), AUSTRALIA 82,372   56,969 82,372 56,969  N/A 2018
SY6 SYDNEY (METRO), AUSTRALIA 8,890 64,197  1,889 8,890 66,086 (2,283) N/A 2018
SY7 SYDNEY (METRO), AUSTRALIA 2,754 47,350  1,335 2,754 48,685 (1,612) N/A 2018
SY8 SYDNEY (METRO), AUSTRALIA  1,073  161  1,234 (190) N/A 2018
TY1 TOKYO (METRO), JAPAN    22,793  22,793 (13,513) 2000 2000
TY2 TOKYO (METRO), JAPAN    85,585  85,585 (61,682) 2007 2006
TY3 TOKYO (METRO), JAPAN    75,837  75,837 (35,231) 2010 2010
TY4 TOKYO (METRO), JAPAN    56,585  56,585 (20,562) 2012 2012
TY5 TOKYO (METRO), JAPAN  102  56,973  57,075 (8,431) 2014 2014
TY6 TOKYO (METRO), JAPAN  37,941  18,779  56,720 (19,544) N/A 2015
TY7 TOKYO (METRO), JAPAN  13,175  5,253  18,428 (8,356) N/A 2015
TY8 TOKYO (METRO), JAPAN  53,848  13,256  67,104 (16,874) N/A 2015
TY9 TOKYO (METRO), JAPAN  106,710  24,877  131,587 (40,361) N/A 2015
TY10 TOKYO (METRO), JAPAN  69,881  15,842  85,723 (15,387) N/A 2015
TY11 TOKYO (METRO), JAPAN  22,099  32,931  55,030 (1) 2018 2018
TY12 TOKYO (METRO), JAPAN 10,285   1,001 10,285 1,001  N/A 2018
OTHERS (5)
 12,022 875  12,500 12,022 13,375 (7,600) Various Various
TOTAL LOCATIONS$30,310 $492,431 $3,675,228 $138,101 $10,714,438 $630,532 $14,389,666 $(4,517,016)    

(1)
The initial cost was $0 if the lease of the respective IBX was classified as an operating lease.
(2)
Building and improvements include all fixed assets except for land.
(3)
Buildings and improvements are depreciated on a straight line basis over estimated useful live as described under described in Note 1 of the Notes to Consolidated Financial Statements in Item 8 of this Annual Report on Form 10-K.
(4)
Date of lease or acquisition represents the date the Company leased the facility or acquired the facility through purchase or acquisition.
(4)
(5)
Includes IBXs CH5, DC12, SP3, SV10 and various other IBXs that are under initial development.development and costs incurred at certain central locations supporting various IBX functions.

The aggregate gross cost of the Company's properties for federal income tax purpose approximated $11,890,862,000$21,371.3 million (unaudited) as of December 31, 2016.

2018.
The following table reconciles the historical cost of the Company’sCompany's properties for financial reporting purposes for each of the years in the three-year period ended December 31, 20162018 (in thousands).
Gross Fixed Assets:
2016 2015 20142018 2017 2016
Balance, beginning of period$7,871,890
 $7,006,695
 $6,308,992
$12,947,735
 $9,855,811
 $7,871,890
Additions (including acquisitions and improvements)2,187,306
 1,172,855
 997,534
2,756,218
 2,508,333
 2,187,306
Disposals(78,607) (9,295) (16,444)(289,157) (78,886) (78,607)
Foreign currency transaction adjustments and others(124,778) (298,365) (283,387)(394,598) 662,477
 (124,778)
Balance, end of year$9,855,811
 $7,871,890
 $7,006,695
$15,020,198
 $12,947,735
 $9,855,811
Accumulated Depreciation:

2016 2015 20142018 2017 2016
Balance, beginning of period$(2,595,648) $(2,242,345) $(1,904,311)$(3,980,198) $(3,175,972) $(2,595,648)
Additions (depreciation expense)(618,970) (440,002) (418,407)(882,848) (748,942) (618,970)
Disposals9,401
 7,396
 16,038
261,928
 65,922
 9,401
Foreign currency transaction adjustments and others29,245
 79,303
 64,335
84,102
 (121,206) 29,245
Balance, end of year$(3,175,972) $(2,595,648) $(2,242,345)$(4,517,016) $(3,980,198) $(3,175,972)

F-78F-70