Internal URL shortener, every single time. They get rave reviews and in one case ended up being considered a core service that had to be up.
Can you explain what the purpose/benefit of this is?
A common hostname is 'go', so when you launch some new programme, project or tool, you can put 'go/projectname', or 'go/toolname' in places like chat topics, email footers and presentation slides.
Applicable in larger places that end up with a mess of different documentation systems, and where trying to unify everything would be a waste of time.