Almost any user-noticable change (that is not a bugfix) is run as a AB-test for a few weeks in my team to verify that it does have the intended impact. I'd be s

Almost any user-noticable change (that is not a bugfix) is run as a AB-test for a few weeks in my team to verify that it does have the intended impact. I'd be surprised if there aren't teams at google, amazon, netflix and similar organizations that work similarly.