And this is one of those things where it has to be done correctly by someone who knows what they're doing. It's not just "oh, I deployed a change and broke some

And this is one of those things where it has to be done correctly by someone who knows what they're doing. It's not just "oh, I deployed a change and broke something i'll just revert it". Often it means major migrations, etc. There's a disconnect between folks writing small CRUD or mobile apps for clients and folks that have to work on large codebases with lots of complex systems.