Why not google up Vmware, Microsoft and call them to chat about this? It's not like this is some college assignment but that you are doing this for real and will be a real customer.
If they won't talk to you, strike them from the list.
Bob
I am new to virtualization and I am working on putting an Internal Virtualization plan in place. I will greatly appreciate if you could help me understand, Under what circumstances is VMWare Virtualization and/or RHEV and/or Xen and/or Microsoft Hyper V is better over the rest. Also, is it reasonable to assume, all that needed to be virtualized on VMware has already occured. Thanks for your help

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