Your organization has signed an agreement with a web hosting provider that requires you to take full responsibility of the maintenance of the cloud-based resources. Which of the following models…

Question

Options

• APlatform as a service
• BSoftware as a service
• CFunctions as a service
• DInfrastructure as a service

• B
  4% (1)
• C
  4% (1)
• D
  93% (25)

Explanation

Infrastructure as a Service (IaaS) places the greatest maintenance responsibility on the customer, making it the correct answer. With IaaS, the provider only manages the underlying physical hardware, networking, and virtualization, while you are responsible for managing the operating systems, middleware, applications, and data - aligning perfectly with "full responsibility of maintenance."

Why the others are wrong:

• Platform as a Service (PaaS) offloads OS and runtime management to the provider, leaving you only responsible for your applications and data.
• Software as a Service (SaaS) hands over almost everything to the provider - you simply use the software, maintaining virtually nothing.
• Functions as a Service (FaaS) is a serverless model where you only manage small code functions; the provider handles all underlying infrastructure.

Memory Tip: Think of it as a rental spectrum - SaaS is like renting a furnished apartment (everything done for you), PaaS is a bare apartment (you furnish it), and IaaS is like buying a plot of land (you build and maintain everything yourself). The more control you have, the more responsibility you carry - and IaaS gives you the most of both.

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