In can only speculate that
http://www.holsystems.com/ launches some virtual machine inside the HTTP server, whatever it is. This is a proprietary system, so I don't have enough detail about it. Maybe the HTTP server is also proprietary (this is not so difficult to develop) and included in this product.
If you want to do something like that, you can do it the was I just suggested, but you cannot hope that a "regular" HTTP server will do something like that if you just write some special Web application. Web applications are executed in a special sandboxed environment, so their access to the host system is strictly limited, for safety purposes.
You either need to bite a bullet and design and implement the hard part, or you should devise some very different architecture. The second would probably much easier, but I cannot give you an exact advise as I don't know enough of your goals and requirements.
—SA
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