Hosted email infrastructure is an example of
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Hosted email infrastructure is an example of SaaS or Software as a Service.
The cloud is a very broad concept. It covers almost every sort of online service. But when businesses refer to cloud procurement there are three primary types of cloud computing. They are IaaS or Infrastructure as a Service, PaaS or Platform as a Service, and SaaS or Software as a Service. Gmail is a famous example of SaaS. Office 365, Salesforce, Google Apps, Citrix Go ToMeeting, Netflix and Cisco WebEx are other well known examples of SaaS.
"Hosted E-mail infrastructure is an example of SaaS (Software as a Service).
It is nothing more than just a “software distribution model” in which a third party service provider provides hosting services for a software application, thus making it accessible to people over the internet.
"Software as a Service" (SaaS) distribution model has many advantages over the traditional software distribution models. For instance, it eliminates the need of using one's own data centres for installation and maintenance of the applications for an organization."