A company uses a cloud‑based email suite. Under the shared responsibility model, who patches the underlying server operating systems?
A. The customer is always responsible for OS patching.
B. The cloud provider is responsible for OS patching.
C. Responsibility is shared, but the customer manages OS patches.
D. It depends on the service level agreement (SLA).
In SaaS, the cloud provider is responsible for OS patching and all underlying infrastructure.