ACCA Applied Knowledge · Business and Technology · The impact of advances in technology
A company wants to use a cloud provider's virtual servers and storage but install and manage its own operating systems and applications on them. Which model does this describe?
This is Infrastructure as a Service. The provider supplies virtual servers, storage and networking, while the customer installs and manages its own operating systems and applications. In SaaS and PaaS the provider manages much more of the technology stack.
- ASoftware as a Service (SaaS)
- BInfrastructure as a Service (IaaS)Correct
- CPlatform as a Service (PaaS)
Explanation
With IaaS the provider supplies the underlying virtualised hardware, while the customer controls the operating systems and applications. In SaaS the provider manages everything including the application, and in PaaS the provider also manages the operating system and runtime environment.
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