I worked for four to six months with ServiceNow, and then I left it and am generally using more GenAI open-source platforms now.
It was just for one or a few projects that I implemented ServiceNow.
I mainly used it for the development of some no-code platform, but it was very limited usage, after which I moved on.
I didn't do any sort of incident management.
I used it for some sort of analytics to help overcome challenges and check what was wrong if something was wrong.