Traditionally all layers of computing environments - hardware, OS, applications, storage - have been static, configured to interact properly and support a specific computing solution. Components are installed to particular computers, resulting in a tightly bound system that does not adapt well to changes. Creating new capability entails procuring and configuring the hardware, software and interfaces.
Virtualisation makes your IT resource more flexible and the use of your hardware more efficient. Components of your IT system no longer need to be rigidly locked together, but become resources that are available instantly when required. Change becomes easier to manage and, as a result, your business can be more responsive to the demands placed on it.