Wikipedia was a great invention for humanity despite the criticisms regarding bias. Linking related concepts together is simply a powerful idea. Your company should have a wiki, so should your household.
That’s it, that is the message.
I don’t think that much more is necessary, if you know wikipedia and think it’s useful there is not much more to say.
I recommend dokuwiki , it’s enough for 95% of the cases out there. Super easy and cheap to run. You can setup it up to run on Hetzner’s webhosting for 1.6 EUR per month.