Which security measure controls virtualization in the cloud?

Securing the hypervisor is the primary security measure that controls virtualization in the cloud. Managing Cloud principles explain that the hypervisor is the foundational component that enables multiple virtual machines to share the same physical hardware.

If the hypervisor is compromised, all hosted workloads are at risk. Therefore, securing the hypervisor through hardening, access control, patching, and monitoring is critical to maintaining isolation between virtual machines and preventing privilege escalation.

Monitoring and logging provide visibility, dedicated hosting reduces shared risk, and managing image assets supports consistency, but none directly control virtualization. Therefore, securing the hypervisor is the correct answer.