It's really built for the use cases that we face when developing software. It has direct integrations to your IDE and terminal, so you can share your code and collaborate with people (without having to combine a lot of different tools for the job).
It also works cross-IDE, so you can be using VSCode and your colleague IntelliJ and that's fine.
I use it for help/teach my students, mentoring and for code reviews/Technical Interviews.