Those are all desktop technologies. VMware make the majority of their revenue from dedicated virtualization servers, that connect to a shared SAN, and allow VMs to be moved from one physical server to another while running.
Their competitors are:
* Microsoft HyperV (missed inclusion inWin2K8, but available as a seperate download - can't move VMs without downtime). Management through MMC.
* RHEL Advanced Server (RHEL 5 with oVirt, a web based management tool, or Virtual Machine Manager, a shitty desktop based one. KVM/Xen is used as the engine, with a preference towards KVM. Not sure on moving VMs, know its planned but haven't payed with it much.
Yeah. Desktop virt for developers and QA is certainly visible.
Virtualized server farms, OTOH, are transparent. You could be logging into a VM and never know unless you ran dmidecode (Linux) or Get_WMIObject Vendor (Windows, IIRC).
That VM could also be moving from one physical machine to another while you're logged into it. You'd never know.
Last project I worked on was at a bank, with a few hundred VMs used to replicate the prod environment about 18 times. Project budget was $450M AU, about $400M US. VMware got a good chunk of that.
