What are the 3 Types of Cloud Computing Services?

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What are the 3 Types of Cloud Computing Services?
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• Infrastructure as a Service (IaaS)

IaaS provides business access to vital web
architecture, like storage space, servers, and
connections, without the business need for
purchasing and managing this internet
infrastructure themselves. And because of the
economies of scale and specialization involved,
this can be to the benefit of both the business
providing the infrastructure and the one
utilizing it. Simply put, IaaS enables an
internet business a way to develop and grow on
demand.
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• Platform as a Service (PaaS)

PaaS clouds are developed, most of the times
inside IaaS clouds by the experts to make the
scalability and deployment of any application
trivial and to help make your expenditures
scalable and predictable. Some good examples of
PaaS system include- Mosso, Google App Engine,
and Force.com. Moreover, PaaS enables a lot of
scalability by design because it is based on
cloud computing.
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• Software as a Service (SaaS)

It is relatively mature and the cloud
applications allow the cloud to be used for
software architecture, reducing the maintenance
burden, support, and operations by having the
application run on computers belonging to the
vendor. For instance, Gmail and Salesforce run as
clouds, but its not necessary that all SaaS has
to be used in the cloud computing. Source
https//www.sifytechnologies.com/dc-services/cloud
-services/