Oh, that makes sense, thanks. I was under the impression this managed everything (including DBs and other services), so I was wondering how this was possible.

I guess this ties in with another post I saw the other day, which was a lightweight container format you could add your environment to and deploy (and sounds like a game-changing idea). If we have a functional, standardized, self-contained container format that provides reasonable security and that you can install an environment to and just deploy to a server, it would pretty much mean that you can pick your app up and copy it to another host and be running in five minutes.