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Learning AWS - Second Edition by Amit Shah, Aurobindo Sarkar

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Introducing cloud service models – IaaS, PaaS, and SaaS

There are three cloud-based service models. The main features of each of these are listed as follows: 

  • IaaS provides a capability for users to provision processing, storage, and network resources on demand. The customers deploy and run their own applications on these resources. Using this service model is closest to the traditional in-premise models but without the lengthy procurement processes. The onus of administering these resources rests, largely, with the customer.
  • In PaaS, the service provider makes certain core components such as databases, queues, workflow engines, email, and so on, available as services to the customer. The customer then leverages these components for building ...

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