virtualization presentation Virtualization is the simulation of the software and/or hardware upon which other software runs. This simulated environment is called virtual machine. Each VM can run its own operating systems and applications as if it were in a physical machine. So It is a way to run multiple operating systems on the same hardware at the same time. VMotion allows you to quickly move an entire running virtual machine from one host to another without any downtime or interruption to the virtual machine This is also known as a “hot” or “live” migration