CompTIA A+ Core 1 (220-1201)Virtualization and Cloud ComputingEasy
A small business is evaluating cloud services. They are particularly interested in a service model that provides them with virtual servers, storage, and networking, but they want to manage the operating systems, applications, and data themselves. Which cloud service model best fits their requirements?
- APlatform as a Service (PaaS)
- BInfrastructure as a Service (IaaS)
- CFunction as a Service (FaaS)
- DSoftware as a Service (SaaS)
Show answer & explanationAnswer & explanation
Correct answer: B. Infrastructure as a Service (IaaS)
Infrastructure as a Service (IaaS) provides the fundamental computing resources like virtual machines, storage, and networks, giving the user control over the operating system and applications. This aligns with the business's desire to manage their own OS, applications, and data.
Why the other options are wrong
- A. PaaS offers a platform for developing and deploying applications, abstracting the underlying infrastructure and OS.
- C. FaaS is a serverless execution model where the cloud provider manages servers and allocates resources for specific functions.
- D. SaaS provides fully managed applications, not raw infrastructure.
Infrastructure as a Service (IaaS)
A cloud computing model that provides virtualized computing resources over the internet. Users manage operating systems, applications, and data, while the provider manages the underlying infrastructure.
- Provides virtual servers, storage, and networking.
- User has control over OS, applications, and data.
- Provider manages virtualization, servers, storage, and network hardware.
Memory trick: I will 'IaaS' my own OS, 'PaaS' over the OS, and 'SaaS' everything.