/However/, let me counter with the point: Just one of our customer has 8000 FTEs working with our system. During hell-time (aka, December and Christmas shopping and shipping), each of those dudes spends their shift taking customer calls lasting 2-4 minutes, which in turn require a few requests into our systems.
Due to the stress of their customers^2 (because it's Christmas and holidays and such), if an agent of a customer is unable to access our systems, they cannot handle the use case of the customer^2 and that will piss of the customer of the customer.
So if we push a bad change during this time, we're going to piss of hundreds of customers^2 per minute for that one customer alone. Even with a fast automatic rollback, that's a long time during hell-time. And they have people who know how to yell at vendors in nasty ways who don't like that.
I enjoy moving software fast and enabling moving software quickly, but customer focus and customer orientation means to understand when to move slow as well.
And hey, if that means more quiet holidays for the hard working operators on my team, who's gonna complain?
