[bityard]

I am on a tools team, so the "customers" for our team are the company's developers. For changes that might cause an extended outage if things go sideways, we generally prefer to do those after-hours or on weekends so that we don't have all the dev teams sitting idle during work hours if something goes wrong on our end.

The upshot is that this is fairly rare and we do not have an on-call rotation. If most anything breaks over the weekend, nobody is going to notice or care until Monday morning rolls around.