Which Azure service model gives you the greatest control over infrastructure?

Infrastructure as a Service (IaaS) provides the most control because it allows you to manage the operating systems, applications, and data, while Azure manages the underlying physical infrastructure. This model is like renting virtual hardware. Software as a Service (SaaS) offers the least control, as you only use the application provided by the vendor. Platform as a Service (PaaS) gives you control over your applications and data, but not the underlying operating system or infrastructure. Database as a Service (DBaaS) is a specialized form of PaaS, where the database infrastructure is managed for you, limiting control to database-specific configurations.