The most helpful part of Stack Overflow for Teams is that it is well aligned to the public Stack Overflow where every software engineer has experience with. This reduces the learning curve and ensures a familiar environment.

It helps that it's a familiar concept that I'm already used to (as an active user of Stack Overflow).

the tags. and all sorts of questions, participating in the StackOverflow community is the ability to find answers to your coding-related questions. and not only that.