There's not a whole lot of documentation on configuration, and many of the distributed defaults include what appear to be MediaWiki organization settings that would be useless or even detrimental to someone trying to get this software running on an isolated system. Examples would be the settings for stats servers and logging.
In my case, I have several wikis on seperate domains and I am trying to see if I can have all the domains use the same Mathoid service. It looks like that's what the foundation is doing, but there's zero documentation on how to do so.