IT infrastructure, simplified.

Data center, cloud and interconnection solutions that fuel business growth.

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Trusted By 1,000+ Customers
MLB Network
Telia Carrier
Paul Hastings

The Right Environment for Your IT Infrastructure

  • 24 x 7

    In-House Security

    We directly employ and train our security staff, adding a layer of skill and accountability

  • 100 %

    Uptime SLA

    Our outstanding record of uptime is backed by a guarantee that your data is up and running at all times

  • 375 +


    Improve performance by connecting to networks of your choice directly or through peering exchanges

  • 300 +

    Cloud & IT Providers

    Hybrid IT made easy. Directly connect to AWS, Microsoft, Google, and SoftLayer within our facilities

"CoreSite won out over good competitors because their solution offers better capabilities within the data center. As importantly, the CoreSite team has demonstrated that they clearly understand our goals and needs." Jason O’Sullivan, Vice President of Corporate Technology
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What's New At CoreSite?

Microsoft Azure ExpressRoute now available in Boston

CoreSite customers in Boston may now directly connect to Microsoft Azure via the CoreSite Open Cloud Exchange, offering seamless hybrid cloud solutions with more reliability, lower costs and faster speeds.

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Microsoft Expands Azure ExpressRoute to Denver

CoreSite is the only data center provider in Denver to offer native connectivity to Microsoft Azure, offering fast, reliable connectivity into the Microsoft Cloud.

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Gartner's Four Critical Considerations to Optimize Colocation Costs

Comparing colocation offerings can be challenging. This guide covers colocation as an alternative to building on-premises data center capacity or as part of a cloud solution, and tips on optimizing spend without sacrificing quality.

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Debating in-house vs. colocation? Compare the costs side-by-side.