You may or may not be acquainted with the word SaaS, but it is now one of the necessities of life whether you are an individual or a business organization. The principle methodology behind SaaS is about the delivery of services over the internet with the help of a cloud-based storage server. To get the benefits of SaaS, one has to buy a subscription. The formerly said line actively demonstrates that one doesn’t need to install any external software to store the data, but it is stored in a cloud-based server, the files of which are deployed at the time when a user commands to use it. Based on its functionality, SaaS applications have been categorized into five basic categories listed below: