A consultant is helping a large company migrate its development environment to a public cloud provider. The developers are working on a VDI solution. The development tools that employees utilize…

SaaS (Software-as-a-Service) provides ready-to-use applications where the customer has no control over the underlying operating system or infrastructure.

PaaS (Platform-as-a-Service) provides a platform for development and deployment, abstracting the underlying OS, which limits the granular OS control developers might need.

While bare metal services provide maximum control, they typically do not involve VDI solutions and are usually chosen when virtualization overhead is unacceptable, or very specific hardware access is required, which is beyond "greater control of the OS environment" for a VDI.

IaaS provides virtualized computing resources, including virtual machines, storage, and networking, giving the customer full administrative control over the operating system. This level of control is essential for developers who need to customize the OS environment, install specific tools, and configure system settings within their VDI solution.