Traditionally, companies have been required to buy, build, and maintain their own IT infrastructures. However, Software As A Service (SaaS) now gives companies an alternative option. Companies can now plug in and subscribe to services built on shared infrastructure via the Internet. The SaaS software model has thrived in recent years because of the many benefits it offers to companies of all types and size. Below are some of the reasons why SaaS solutions are proving such a popular choice.