Microsoft Azure Fundamentals AZ-900 Practice Question

They should choose Infrastructure as a Service (IaaS). IaaS provides the greatest level of control over the computing resources without needing to manage the physical infrastructure. The cloud provider manages the physical hardware and virtualization, while the customer manages the operating systems, storage, and applications.

Platform as a Service (PaaS) offers less control over the operating system and focuses on deploying applications without worrying about the underlying platform. Software as a Service (SaaS) requires no management of the infrastructure or applications, as the software is provided over the internet. Function as a Service (FaaS), or serverless computing, allows running code snippets without managing servers, which isn't suitable when control over the operating system is required.