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Business Strategy and Accounting Basics

Among cloud services, which is the one in which the provider supplies infrastructure such as virtual machines, storage and networks, while the user installs and manages the OS, middleware and applications?

  1. ASaaS
  2. BIaaS
  3. CPaaS
Show answer and explanation

Answer: B. IaaS

Cloud services are classified by the range the provider supplies. IaaS (infrastructure as a service) supplies infrastructure such as virtual machines, storage and networks, and the user manages the OS and applications on top. PaaS (platform as a service) supplies everything up to the execution environment such as the OS and middleware, and SaaS (software as a service) supplies everything up to the application, so the user has correspondingly less to manage.

  • A. This service supplies everything up to the application's functions; the user does not manage the OS or applications.
  • B. Correct. Only the infrastructure is supplied, and the user manages everything from the OS up.
  • C. This supplies everything up to the execution environment such as the OS and middleware; the user develops and deploys their own applications on it.
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