Microsoft 365 FundamentalsDescribe cloud conceptsEasy
A small business is evaluating cloud services. They are particularly interested in a model where they can provision virtual machines, storage, and networking resources, but they want to retain full control over the operating systems, installed applications, and runtime environments. Which cloud service type aligns with this requirement?
- AInfrastructure as a Service (IaaS)
- BFunction as a Service (FaaS)
- CSoftware as a Service (SaaS)
- DPlatform as a Service (PaaS)
Show answer & explanationAnswer & explanation
Correct answer: A. Infrastructure as a Service (IaaS)
Infrastructure as a Service (IaaS) provides the fundamental computing resources like virtual machines, storage, and networks, but the user maintains control and management responsibilities over operating systems, applications, and runtime environments.
Why the other options are wrong
- B. FaaS is a serverless model where users only provide code, with no control over the underlying OS.
- C. SaaS abstracts away all infrastructure and OS management, providing a ready-to-use application.
- D. PaaS abstracts away OS and runtime, providing a development platform, but not full control over the OS.
Infrastructure as a Service (IaaS)
A cloud service model that provides virtualized computing resources over the internet, giving users control over OS and applications.
- Cloud provider manages physical infrastructure.
- Users manage OS, applications, data.
- Offers high flexibility and control.
Memory trick: I P S, think of it as increasing levels of provider management.