1. Salesforce.com, $3.05 Billion
CEO: Marc Benioff
According to Baird Technology Research, Salesforce.com has legitimized the software-as-a-service market, which is having a major impact on traditional software companies at the same time that infrastructure as a service and platform as a service are posting gains. Analysts expect XaaS to bring about a significant disruption not just on a shifting of dollars but also on the reduction of overall tech spending, as the use of the cloud increases, offloading dollars that would otherwise be spent on customer premise equipment.