CompTIA Project+ (PK0-005)Basics of IT and GovernanceMedium
A project manager is overseeing the migration of an on-premise application to a public cloud environment. The project team requires full control over the operating system, including patching and configuration, but wants the cloud provider to manage the underlying hardware and virtualization. Which cloud service model best fits these requirements?
- ASoftware as a Service (SaaS)
- BInfrastructure as a Service (IaaS)
- CFunction as a Service (FaaS)
- DPlatform as a Service (PaaS)
Show answer & explanationAnswer & explanation
Correct answer: B. Infrastructure as a Service (IaaS)
Infrastructure as a Service (IaaS) provides virtualized computing resources, including the operating system, allowing the customer full control over it while the cloud provider manages the physical infrastructure.
Why the other options are wrong
- A. SaaS provides a complete, ready-to-use application; the customer has no control over the OS.
- C. FaaS (serverless) abstracts servers and OS entirely; customers only manage code functions.
- D. PaaS provides a development environment; the customer manages application code but not the OS directly.
Infrastructure as a Service (IaaS)
A cloud service model where the provider offers virtualized computing resources over the internet, including virtual machines, storage, and networking. The customer manages the operating systems, applications, and data.
- Highest level of customer control over software stack.
- Provider manages physical hardware and virtualization.
- Flexible and scalable for diverse workloads.
Memory trick: IaaS: I'm in charge of the OS and Apps!