Which benefit does a virtual machine provide compared with a physical server?

Virtualization allows multiple independent virtual machines (VMs) to run concurrently on a single physical server, maximizing hardware utilization and reducing the need for additional physical hardware purchases. This is a primary benefit of virtualization. Virtual machines do not inherently increase server processing performance; they share the underlying physical resources, which can sometimes lead to performance overhead. The CPU and RAM resources of a virtual machine can be affected by other virtual machines on the same host, as they contend for shared physical resources, a concept known as "noisy neighbor" syndrome. While VM deployment can be faster than physical server deployment once the virtualization infrastructure is in place, the initial setup and management of a virtualization environment can be more complex than simply racking a physical server.