Press Release

Microsoft Azure ExpressRoute Now Available at CoreSite’s Boston Data Center

Denver, CO—May 31, 2017—CoreSite Realty Corporation (NYSE:COR), a premier provider of secure, reliable, high-performance data center and interconnection solutions across the U.S., today announced the availability of Microsoft Azure ExpressRoute through CoreSite’s Boston data center. Private connectivity to Microsoft Azure via ExpressRoute is now available in four of CoreSite’s markets, including through its Denver, Los Angeles and New York data center campuses.

CoreSite customers in Boston may now privately connect to Microsoft Azure, Office 365 and Dynamics 365 via the CoreSite Open Cloud Exchange, which provides private, SLA-backed virtual connections and on-demand provisioning. The integration of Azure ExpressRoute and the CoreSite Open Cloud Exchange provides CoreSite customers with the opportunity to establish a fast and reliable connection into Azure, Office 365 and Dynamics 365 that bypasses the public Internet. With a dedicated, high-performance Azure ExpressRoute connection, customers have a natural extension of their datacenters and can build hybrid applications that span on-premises infrastructure and Azure without compromising privacy or performance.

CoreSite customers in Boston, Denver, New York and Los Angeles can efficiently transfer large data sets for high-performance computing, migrate virtual machines between dev-test environments in Azure to production environments housed in a CoreSite datacenter and optimize replication for business continuity, disaster recovery, and other high-availability strategies. Microsoft Azure ExpressRoute also enables Office 365 and Dynamics 365 customers to streamline network connectivity for Exchange, Skype for Business and SharePoint services.

“By providing our customers with direct connectivity to Azure ExpressRoute in our Boston market, we are enabling enterprises to more effectively deploy and realize the benefits of hybrid and multi-cloud solutions,” said Brian Warren, Senior Vice President of Engineering & Product at CoreSite. “Through the CoreSite Open Cloud Exchange, we are able to offer our customers flexible and reliable connections to the cloud, while ensuring security, optimal performance and scalability.”

CoreSite’s Boston data center (BO1) borders Cambridge and Boston’s central business district, serving the many healthcare, financial, technology and educational enterprises located in the area, and currently provides access to more than 80 network, cloud and IT service providers. This strategically located colocation facility is tethered to regional communication hubs and offers customers secure, reliable, high-performance solutions for their mission-critical business applications.

About CoreSite

CoreSite Realty Corporation (NYSE:COR) delivers secure, reliable, high-performance data center and interconnection solutions to a growing customer community across eight key North American markets. More than 1,200 of the world’s leading enterprises, network operators, cloud providers, and supporting service providers choose CoreSite to connect, protect and optimize their performance-sensitive data, applications and computing workloads. Our scalable, flexible solutions and 430+ dedicated employees consistently deliver unmatched data center options — all of which leads to a best-in-class customer experience and lasting relationships. For more information, visit CoreSite.com.

CoreSite Media Contact

Greer Aviv
VP, Investor Relations and Corporate Communications
+1 303.405.1012
+1 866.777.CORE
greer.aviv@coresite.com

Forward Looking Statements

This press release may contain forward-looking statements within the meaning of the federal securities laws. Forward-looking statements relate to expectations, beliefs, projections, future plans and strategies, anticipated events or trends and similar expressions concerning matters that are not historical facts. In some cases, you can identify forward-looking statements by the use of forward-looking terminology such as "believes," "expects," "may," "will," "should," "seeks," "approximately," "intends," "plans," "pro forma," "estimates" or "anticipates" or the negative of these words and phrases or similar words or phrases that are predictions of or indicate future events or trends and that do not relate solely to historical matters. Forward-looking statements involve known and unknown risks, uncertainties, assumptions and contingencies, many of which are beyond CoreSite's control, that may cause actual results to differ significantly from those expressed in any forward-looking statement. These risks include, without limitation: the geographic concentration of CoreSite's data centers in certain markets and any adverse developments in local economic conditions or the demand for data center space in these markets; fluctuations in interest rates and increased operating costs; difficulties in identifying properties to acquire and completing acquisitions; significant industry competition; CoreSite's failure to obtain necessary outside financing; CoreSite's failure to qualify or maintain its status as a REIT; financial market fluctuations; changes in real estate and zoning laws and increases in real property tax rates; and other factors affecting the real estate industry generally. All forward-looking statements reflect CoreSite's good faith beliefs, assumptions and expectations, but they are not guarantees of future performance. Furthermore, CoreSite disclaims any obligation to publicly update or revise any forward-looking statement to reflect changes in underlying assumptions or factors, of new information, data or methods, future events or other changes. For a further discussion of these and other factors that could cause CoreSite's future results to differ materially from any forward-looking statements, see the section entitled "Risk Factors" in CoreSite's most recent annual report on Form 10-K, and other risks described in documents subsequently filed by CoreSite from time to time with the Securities and Exchange Commission.