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ACCA Applied Knowledge · Business and Technology · The impact of advances in technology

A company stops buying its own servers and instead rents computing power, storage and networking over the internet from a provider, paying only for what it uses. Which cloud service model is this?

This is infrastructure as a service. The provider supplies virtualised servers, storage and networking over the internet, and the customer pays for usage. SaaS would deliver finished software applications, and PaaS would supply a development platform, neither of which is described.

  1. AInfrastructure as a service (IaaS)Correct
  2. BSoftware as a service (SaaS)
  3. CPlatform as a service (PaaS)
  4. DData as a service (DaaS)

Explanation

Renting basic computing resources such as servers, storage and networking over the internet on a pay-per-use basis is IaaS. SaaS would instead deliver a finished application, which is not described here. PaaS provides a development environment on top of the infrastructure.

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