SaaS stands for software as a Service, provides a facility to the user to use the software from anywhere with the assistance of an internet connection. it is also known as software on demand. The remote access is possible because of service providers, host applications and their associated data at their location. There are varied edges of the SaaS as it is economical and only the user has to pay for some of the basic costs such as licensing fees, installation costs, maintenance fees, and support fees. Some of the examples of SaaS are Yahoo! Mail, Hotmail, and Gmail.
PaaS stands for Platform as a Service. This helps the user by providing the facility to make, publish, and customize the software in the hosted environment. An internet connection helps to do it. It also has several benefits such as it has lower costs and only the user has to pay for the essential things. The host of a PaaS has the hardware and software of its own. This frees the user from installing the hardware and software to execute a new application.
IaaS stands for Infrastructure as a Service. With the assistance of IAAS, the user can use IT hardware and software just by paying the basic price of it. the companies that use IaaS are IBM, Google, and Amazon. With the help of visualization, the host can manage and create the infrastructure resources at the cloud. for small start-ups and firms, the IaaS has the major advantage as it benefits them with the infrastructure rather than spending a large amount of money on hardware and infrastructure. the reason for choosing IaaS is that it is easier, faster, and cost-efficient which reduces the burden of the organizations.