SaaS cloud offering is easy to use and is one of the most popular forms of cloud computing. SaaS also uses a web-based delivery model. Most SaaS applications can be run directly from a web browser, without any downloads or installations required, which eliminates the need to install and run applications on individual compute machines. In simple terms, you are provided access to application services installed on a server. It becomes very easy for enterprises to focus on actual business instead of focusing on IT, because everything is managed by the cloud service provider: applications, runtime, data, middleware, O/S, virtualization, servers, storage, security, and networking. Gmail, Salesforce, and Office 365 are famous examples of SaaS services offered by Google, Salesforce, and Microsoft.