What is Cloud Computing?

Cloud Computing is the concept of crowd/grouping of unknown resources that are giving for a specific purpose to the user.
-It is a concept of pay per use of each it service.
-Cloud computing is a concept of accessing infrastructure, platform and software as a service over the internet by paying the each use of the it services.

There are three services in cloud computing. They are called cloud services.
1.IAAS(Infrastructure As A Service): Using infrastructure such as Applications server, Storage server on the internet is called IAAS.

2. PAAS(Platform As A Service):   It is the concept of using a platform such as any programming language on which an application is built provided as a service over the internet is called PAAS.
Eg:  Force.com ( The platform used by the sales force).

3.SAAS(Software As A Service): It is the concept of accessing a software application over the internet is called SAAS.
Eg: Sales force CRM, MS CRM

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