SaaS is software distribution model in which applications are hosted by a vendor or a service provider and made available to customers over network, usually internet.
SaaS is becoming increasingly relevant delivery model as underlying technology that support Web Services and service oriented architecture (SOA) mature and new developmental approaches such as Ajax, become popular. Meanwhile broadband services has become increasingly available to support user access from more areas around the world.
SaaS is closely related to the ASP (Application Service Provider) and on Demand computing software delivery models. IDC identifies two slightly different delivery models for SaaS
Benefits of SaaS include
- Easier Administration
- Automatic updates and patch management
- Compatibility: All users will have same version of software
- easier collaboration, for some reason
- global accessibility
The traditional model of software distribution, in which software is purchased and installed on personal computers, is sometimes referred to as software as a product.
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