Actually, I am not much responsible for the hosting side of the OU Moodle site. I am mainly a developer, and only occasionally do other stuff when other people are on holiday at key moments.
But, that does not stop me talking about this. I gave a presentation at the 2014 Leipzig MoodleMoot, then repeated it at iMoot 2014. For some reason, that is one of the few 2014 videos they have not published on YouTube yet, which means the only place you can see a recording is http://2014.imoot.org/course/view.php?id=37, which is only accessible if you registered for iMoot 2014. I just put the slides of SlideShare http://www.slideshare.net/tjh1000/ou-moodle-hosting. There are a few things that are out-of-date after a year (e.g. we now have lots of Behat tests) but it is not too badly out of date. It would be better with what I said, rather than just the slides.