CLO-002 practice question 18

With software as a service, the provider runs the whole stack: infrastructure, platform and the application itself, so the customer only uses and configures the software. PaaS still leaves the customer to build, deploy and maintain applications, and IaaS leaves the operating system, middleware and applications to the customer, so both carry more overhead. MaaS (monitoring as a service) is a specialized service, not a general model that minimizes overhead.