Sometimes virtualization is confused with cloud computing but two are different thing and are not interchangeable but instead virtualization is used to create cloud system. Virtualization is simply a layer of software that creates no. of small machines from one physical machine which though appears to be running on different machines but in original all small machines are part of one physical machine. We help you maximize the revenue by using the present hardware to the fullest. With virtualization you can run no. of server (note- no. of servers depends on configuration of physical server) simultaneously where in case of physical server only a single OS could run. Thus you can separate critical business application server from non-critical without purchasing  a separate physical hardware for every server.