In the most recent case I can think of the identity management on a big bank's 16 mainframes was being changed. There were 4 technical teams including QA plus

In the most recent case I can think of the identity management on a big bank's 16 mainframes was being changed. There were 4 technical teams including QA plus 2 outside vendors and 2 business teams representing mainframe users and identity management system support. And there were a few bad actors in the mix. About halfway through the project several of the teams started refusing to have meetings unless I was present even if the subject had nothing to do with me, "You're the only one who knows what's going on around here." None of the technical teams could understand the lingo of the other technical teams. So I had to figure that out and translate for everyone. I helped the QA team write test scripts for all the systems involved, not just mine. I helped front-end user support write up troubleshooting guides on systems that weren't mine. And I even wound up assisting one of the other dev teams debug code. While I did solve a lot of technical problems, the big thing I brought to the table for this project was helping mitigate social problems. I got major personal kudos and a bonus of about 30% of my yearly salary.