Gartner tracks ten different categories of SaaS applications in this latest forecast with CRM, ERP, and Web Conferencing, Teaming Platforms, and Social Software Suites being the three largest in terms of global revenue growth.

FORBES: Forecasting Public Cloud Adoption in the Enterprise

"We're not big in ERP, aren't aggressively exploring outsourcing and don't view the Web as so bizarre we can't get our head around it, " says Scott Hatfield, chief information officer at cable operator Cox Communications.

FORBES: The service mob