Under which cloud service model does the provider manage the MOST of the environment, leaving the customer responsible for the fewest elements?
Show answer and explanation
Answer: C
In SaaS the provider runs everything: the infrastructure, the platform beneath it, and the application itself, while the customer governs only its own data, identity sign-in decisions, and device usage. It is the far end of the shared responsibility spectrum.
IaaS leaves the operating system and everything above it to the customer, and PaaS sits between the two, always leaving more than just data with the customer.
Why the other options are wrong
- A. In IaaS the customer owns the guest operating system, runtime, middleware, and application, making its share the largest of the three models.
- B. PaaS abstracts the OS and platform but still leaves application code, configuration, and data management with the customer, which is more than SaaS leaves.
- D. Responsibility deliberately shifts along the models; it is not distributed equally across them.