Who's really making money in the cloud computing market?
It can be tough to say for sure because most cloud computing companies don't make official revenue and earnings figures available. But, that hasn't stopped some analysts from making estimating at least the revenue results.
Analyst firm Technology Business Research estimates annual revenue for the top public cloud companies in 2012 across infrastructure as a service (IaaS), software as a service (SaaS) and platform as a service (PaaS) markets. As you can see here, only Salesforce.com, Amazon Web Services and Microsoft are believed to have crossed the $1 billion mark for annual cloud revenue. Providers like IBM, HP, Citrix and AT&T still have a ways to go.