A hypervisor is a program used to enable multiple operating systems to share a single hardware host. Each operating system consists of a host's processor, memory, and other resources. The hypervisor has to control the resources and host processor, allocating what is required for each operating system in turn and making sure that the guest operating system cannot disrupt each other.
* Space efficiency
* Energy usage
* Server maintenance requirements.
Types of Hypervisor :
* Type-1 Hypervisor (also known as Bare Metal or Native Hypervisor)
* Type-2 Hypervisor (also known as Hosted Hypervisor)
