The boss gets to put "lead the conversion to a virtualized environment" on his resume. True story.

Two reasons: - Easy migration between hardware configurations of a running system. - Snapshots to revert quicker after a failed upgrade / change. (Typically in addition to traditional backups.)

My case was for a heterogeneous build environment, where separate environments needed to be maintained for different developer groups.

It would have been a good fit for VMs.. except for the performance.