A consultant is helping a large company migrate its development environment to a public cloud provider. The developers are working on a VDI solution and require greater OS control. Which cloud type should be implemented?

A consultant is helping a large company migrate its development environment to a public cloud provider. The developers are working on a VDI solution and require greater OS control. Which cloud type should be implemented?

• A. SaaS
• B. PaaS
• C. Bare metal service
• D. IaaS

Answer: (D)

In cloud service models, who handles the operating system and runtime is the key difference. For a development environment that includes a VDI solution and requires control over the OS, you need to manage the OS itself—installing patches, configuring users, and tailoring the software stack. That level of control is provided by IaaS, where you provision virtual machines and install and manage the operating system and applications. SaaS delivers software as a service with no OS customization, and PaaS provides a platform where the provider handles more of the OS and runtime, leaving you with less control over the underlying environment. Bare metal can offer even more hardware-level control, but in most cloud migrations the standard model that gives you OS-level control while still provisioning infrastructure is IaaS.

In cloud service models, who handles the operating system and runtime is the key difference. For a development environment that includes a VDI solution and requires control over the OS, you need to manage the OS itself—installing patches, configuring users, and tailoring the software stack. That level of control is provided by IaaS, where you provision virtual machines and install and manage the operating system and applications.

SaaS delivers software as a service with no OS customization, and PaaS provides a platform where the provider handles more of the OS and runtime, leaving you with less control over the underlying environment. Bare metal can offer even more hardware-level control, but in most cloud migrations the standard model that gives you OS-level control while still provisioning infrastructure is IaaS.