The megatrend that powers SaaS is the same one driving Web 2.0, SOA and every other expression of today’s increasingly Web-connected world. Fundamentally, the infrastructure of the Web allows us to cut out much of the location-dependent friction that gets in the way of communicating, collaborating and trading. Software used to be delivered in boxes and had to be installed in the same building as the people that used it. The Web removes those constraints, enabling SaaS — and SaaS in turn becomes the foundation for innovative new ways of interacting and doing business. Software as a Service (SaaS)—meaning delivering software over the Internet—is increasingly popular for its ability to simplify deployment and reduce customer acquisition costs; it also allows developers to support many customers with a single version of a product. SaaS is also often associated with a "pay as you go" subscription licensing model. Under a "pay-as-you-go" model, your customers gain access ...