Server virtualization is a technology that allows multiple virtual servers to run on a single physical server. This is achieved by using a software layer called a hypervisor, which divides the physical resources, such as CPU, memory, and storage, among the virtual servers. Each virtual server operates independently, enabling better resource utilization and flexibility. By consolidating servers, organizations can reduce hardware costs, energy consumption, and physical space requirements. Additionally, server virtualization simplifies management and enhances disaster recovery options, as virtual servers can be easily backed up and restored. This technology is widely used in data centers and cloud computing environments.