Here's a look at some of the most popular stories on Data Center Knowledge this week.

GAO finds many agencies still have trouble calculating cost savings from data center closures

Sizable Imtech campus already has a tenant and multiple carriers offering services

Company open sources another tool that makes the site fast and resilient

An epicenter of America's Internet, the region is well on its way to becoming the biggest data center market in the country

Data center company continues its quest to become more than just a big landlord

Prominent Big Data startup a big win for Pivotal’s partner program

Verizon is recognizing the importance of offering access to multiple cloud options to its enterprise customers

European PaaS provider chooses Montreal for its first North American cloud region

Company taps Zadara to get in the cloud services game, offering local cloud storage to its colo customers and others