Perhaps most surprising are companies NOT on Gartner’s MQ. Missing from this list are big-name companies that have invested a lot in the cloud, including Microsoft, HP, IBM and Google. That may change in future years, though, as this MQ report only includes providers that had IaaS clouds in general availability as of June 2012. Microsoft, HP and Google had clouds in beta at the time.
Gartner only measured the top 15 cloud providers by estimated global market share, which left out others such as CloudSigma, FireHost, NaviSite and Peer 1, which Gartner mentions as having competitive and compelling offerings, but not top-15 global market share. Other providers appearing on the list in past years dropped because of the market share requirement included AT&T;, Datapipe, Hosting.com, Tata Communications and Virtacore Systems.