On the other hand, SAAS (Software as a Service) which is also referred to as on-demand software helps in eradicating the need to install full-fledge software and access it directly through the clouds. It is one of the easiest cloud model to set up and manage. Popular SaaS products like Office365, Google Apps, TurboTax Online, Dropbox, and Salesforce are being used by thousands of businesses on daily basis.
Platform as a Service (PaaS) provides pre-defined software environment such as operating system, programming language execution environment, database and the web server to set up and run the applications effectively. Over wholly, it offers the platform to take full control over the apps installed and no control over the underlying hardware or OS. Few of its examples include web servers, database servers including SQL, or programming environments that support Java, .NET, or Python.