Who has smallest hypervisor foot print?

I’ve been watching the MS blog for sometime – and noticed there had been a couple of articles about the importance of having a small footprint. I’d been mean to read those post fully an answer their claims. Anyway, the folks at VMware have taken it upon themselves to rebut these claims here.

http://blogs.vmware.com/virtualreality/2009/08/our-position-on-hypervisor-footprints-patching-vulnerabilities-and-whatever-else-microsoft-wants-to-throw-into-a-blog-post.html

But if you really can’t be bothered to do so all you need to see is this image. ESXi is that very small circle in blue. Yeah, its so small I didn’t see it at first glace either….