Any CIO would be a hero if s/he was able to banish the ""IT"" problems and inflexibility from the land while maintaining - or increasing - the level of services available. This is exactly what virtualization proposes. Virtualization enables CIOs to minimize the physical constraints that its devices imposed on the system because the physical devices no longer exist. However, how can this be? If anyone thinks about it, an enterprises thousands of servers can be defined by their processors, amounts of RAM and hard disks.