CoreSite, an American Tower company, runs about 28 interconnection-dense data centers across roughly 11 major US markets, with native cloud on-ramps to AWS, Azure, Google Cloud, and Oracle through its Open Cloud Exchange. If your problem is getting workloads as close to the cloud as physics allows — private, direct, low-latency — CoreSite is the operator whose whole design answers that question.
CoreSite operates around 28 data centers concentrated in roughly 11 major US markets, and its defining feature is interconnection density. Through the Open Cloud Exchange it offers native, software-defined on-ramps directly to AWS, Azure, Google Cloud, and Oracle. The footprint is deliberately tight and metro-focused — this is not a global land-grab; it's an interconnection fabric for enterprises whose latency and private-connectivity requirements are the deciding factor.
Organizations whose deciding requirement is private, low-latency connectivity to AWS, Azure, GCP, or Oracle from colocation.
Teams running hybrid or multi-cloud who want carrier and cloud choice concentrated in connectivity-rich US markets.
If you need colocation across many countries with a sovereign story, Digital Realty's global platform fits better. Worth comparing.
CoreSite's footprint is deliberately concentrated. If you need many secondary or edge markets, Flexential or Cologix may fit better.