Software as a Service (SaaS) According to a Gartner Group estimate, SaaS sales in 2010 reached $10b, and were projected to increase to $12.1b in 2011, up 20.7% from 2010. Gartner Group estimates that SaaS revenue will be more than double its 2010 numbers by 2015 and reach a projected $21.3b. Customer relationship management (CRM) continues to be the largest market for SaaS. SaaS revenue within the CRM market was forecast to reach $3.8b in 2011, up from $3.2b in 2010. Wikipedia   ben@saasnw.com