Cloud service models

•Software as a Service (SaaS):
                 --It offers renting application functionality from a service provider rather than buying, installing and running software by the user.
•Platform as a Service (PaaS) :
                --It provides a platform in the cloud, upon which applications can be developed and executed.
•Infrastructure as a Service (IaaS) :

                 -- vendors offer computing power and storage space on demand.

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