SaaS is a new model of how software is delivered. SaaS refers to software that is accessed via a web browser and is paid on a subscription basis (monthly or yearly). Different from the traditional model where a customer buys a license to software and assumes ownership for its maintenance and installation, SaaS presents significant advantages to the customer.
SaaS is faster and a cost effective way to getting implemented. There are no hardware, implementation or acquisition costs involved to run the application from the customer's side. It's the responsibility of the SaaS vendor (us) to manage and run the application with utmost security, performance and reliability.
Since customers pay a subscription, they have immediate access to the new features and functionality. Unlike traditional softwares where upgrades would happen once a year or once in 6 months (with the vendor coming to your office with a CD), the SaaS vendor continuously pushes new updates, fixes to the application, which is immediately accessible by the customer. This reduces the length of time it takes a customer to recognize value from the software.
Since the software application is delivered as a service, its important for the vendor to focus on customer service and experience. Since this is on a subscription model, the vendor is judged on a month-month basis and the pressure to innovate or risk losing business is greater.
SaaS can be used by Windows, Linux, or Mac users, providing true platform independence over the Internet.