Cisco Certified Support Technician (CCST) NetworkingNetworking FundamentalsHard
A company is considering migrating some of its on-premise servers and applications to a cloud provider. They want to maintain full control over the operating system, applications, and data, but offload the management of the underlying hardware, virtualization, and networking infrastructure. Which cloud service model best fits these requirements?
- ASoftware as a Service (SaaS)
- BFunction as a Service (FaaS)
- CPlatform as a Service (PaaS)
- DInfrastructure as a Service (IaaS)
Show answer & explanationAnswer & explanation
Correct answer: D. Infrastructure as a Service (IaaS)
Infrastructure as a Service (IaaS) provides virtualized computing resources over the internet. With IaaS, the cloud provider manages the infrastructure (hardware, virtualization, networking), but the customer retains control over the operating systems, applications, and data, precisely matching the scenario's requirements.
Why the other options are wrong
- A. SaaS provides ready-to-use software applications over the internet, with the provider managing almost everything, offering the least control.
- B. FaaS (serverless computing) abstracts away the server infrastructure completely, allowing users to deploy and run code as functions, offering even less control than PaaS.
- C. PaaS provides a platform for developing, running, and managing applications without building and maintaining the infrastructure, meaning less control over the OS.
Infrastructure as a Service (IaaS)
IaaS is a cloud computing service model that provides virtualized computing resources over the internet, giving users control over operating systems, applications, and data.
- Cloud provider manages hardware, virtualization, storage, and networking.
- Customer manages OS, middleware, applications, and data.
- Offers the most flexibility and control among cloud service models.
Memory trick: IaaS is for Infrastructure, You Still Install Systems.