SaaS is based on a one-to-many model wherein service providers offer a single application to multiple users based on the subscription model of their choice. One of the biggest advantages of the SaaS model is that it doesn’t necessarily require end users to possess the computing power to run the software. All they can have is an internet connection and access to a web browser to run SaaS applications with ease. Additionally, they don’t need to worry about upgrades since it’s a hosted software and the service provider takes care of it all.