I used to visit a particular council...
...who I won't name and shame because despite their lack of technical nounce they actually had a lot going for them from my perspective, such as:
Everything was well documented. Amazingly so - they had records of installs going back over a decade so when it came time to upgrade servers, we had ready access to detailed install docs for all of their applications - including any gotchas that had been encountered!
They were actually incredibly pleasant people to work with (well the IT peeps were - some of the users were... difficult... such as the woman who logged a complaint because someone had deleted her username from the Windows login box and how could she be expected to remember it? Or the one who complained because the roving IT helper moved one of the icons on her desktop an inch to the side and she "couldn't find it" etc) and they had that very unique feature that they knew they had limited knowledge.
Not that they let that be a barrier to their occasionally randomly trying / changing things.
And even now, almost 20 years later, that site still features regularly in my anecdotes.