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What are the different layers in cloud computing? Explain working of them.

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There are 3 layers in the hierarchy of cloud computing.

1) Infrastructure as a service (IaaS):It provides cloud infrastructure in terms of hardware as like memory, processor, speed etc.

2) Platform as a service (PaaS):It provides cloud application platform for the developer.

3) Software as a service (SaaS)::It provides the cloud applications to users directly without installing anything on the system. These applications remains on cloud.