Hi Eric,
Thanks on your explanations and links you post for me.
We have already set up Guest OS customization process by using an In-house tool based on VIX. The tool is creating all sort of operation on the Guest OS.
I'm still debating and considering how to make the easiest flow for creating large scale of machines ( vapps templates) with different third party applications. Large matrix of Microsoft OS's each OS has different permutations of third party applications
Thanks