GUEST POSTImage Credit: Elvert Barnes/FlickrSince Salesforce.com did us all a terrific service by touting the initial benefits of software as a service (SaaS) through its “No Software” branding, many SaaS companies have sprouted up, grown and had healthy exits. The explanation for this growth is simple — SaaS has become the best choice for replacing on-premises software, largely because the tangible benefits are staggering.