Microsoft Azure Fundamentals (AZ-900)Describe cloud conceptsHard
A company is considering migrating its on-premises virtual machines to Azure. They want to maintain complete control over the operating system, including patching, configuration, and installing custom software. They also need to manage the network configuration, such as virtual network peering and custom DNS settings. Which cloud service type provides the most control over these specific components?
- AServerless Computing (FaaS)
- BInfrastructure as a Service (IaaS)
- CSoftware as a Service (SaaS)
- DPlatform as a Service (PaaS)
Show answer & explanationAnswer & explanation
Correct answer: B. Infrastructure as a Service (IaaS)
IaaS provides virtualized computing resources, giving customers the highest level of control over operating systems, installed software, and network configurations, mirroring an on-premises environment.
Why the other options are wrong
- A. FaaS abstracts away all server and OS management, which is the opposite of the desired control.
- C. SaaS offers pre-built applications with no control over the underlying OS or network.
- D. PaaS manages the operating system and network infrastructure, removing the customer's desired control.
Infrastructure as a Service (IaaS)
A cloud service model that provides virtualized computing resources over the internet, giving customers control over operating systems, applications, and network configurations.
- Highest level of customer control
- Virtual machines, virtual networks, storage
- Customer manages OS, middleware, applications
Memory trick: IaaS gives you the 'Keys' to the infrastructure.