Maybe "Once you deploy, you aren’t testing code anymore, you’re testing systems"? Trying to lift something out of the article instead of writing a new title.
I saw that too, but I think it's a bit too obscure as a title.
We all test in prod
Ok, there's actually a phrase from the article that says that, so we'll put that up there and see what happens.
For us curious latecomers, what was the original title?