Server virtualization helps partition the physical server into multiple isolated and unique virtual ones via a software application. Each small virtual server has its own operating system, known as the guest operating system. These run on another OS known as the host OS. Different virtualization techniques are used to achieve the desired transparency. Server virtualization's key advantages are higher server abilities, affordable operational expenses, server complexities, increased application performances, quick deployment of workloads, etc. Three main kinds of server virtualizations are available: OS-level virtualization, para virtualization, and full virtualization.