I found PagerDuty to be grossly underwhelming when our team moved to it. I'd focus on stupid-easy integration & some reasonable calendar management to differentiate. PagerDuty Calendar/Holiday/Workday management and cross-regional scheduling were very poorly implemented. The amount of manual schedule adjustment when someone actually wanted to take their 1 week vacation was insane. We ended up with overrides on top of…
Most of this has nothing to do with pager duty, but instead is around the companies process.