What is SaaS?

Software as a service (SaaS; pronounced /sæs/) is a software licensing and delivery model in which software is licensed on a subscription basis and is centrally hosted. It is sometimes referred to as on-demand software,web-based software, or hosted software. SaaS applications run on a SaaS provider’s servers.

What are the Advantages of SaaS?
High adoption
Lower initial costs
Painless upgrades
Seamless integration
Easy Customization

SaaS facilitates remote application hosting and delivery, making this the key advantage of SaaS: painless application access. SaaS customers have no hardware or software to buy, install, maintain, or update. Access to applications is easy—you just need an Internet connection.