Momentum continues to build behind software as a service. Gartner is forecasting worldwide software SaaS revenue to hit $7.5 billion in 2009, a 17.7 percent increase from 2008 revenue of $6.4 billion. And it's not stopping there. Expectations for sales total $14 billion by 2013. Channel Insider breaks out the most promising SaaS markets for the channel.
By Carolyn April