6. St. Louis, Mo.
St. Louis is in the "Show Me State" of Missouri and is home to the Great Arch, an impressive silver structure that reaches into the clouds like a harbinger of IT things to come. In an effort to avoid costly upgrade, replacement and infrastructure costs many companies are getting on the cloud bandwagon. "St. Louis is seeing demand for cloud opportunities within start-ups as well as telecommunications and data center companies," says Cullen, "this seems to be fueling the growth for cloud services here."