How does immutable work in regard to databases? As in „we need to add a column“?
Two days later the CTO sends everyone a stroppy email about "column bloat that should've been a table", ssh's into the personal instance that they've been keeping alive† since before you had funding and learned to launch servers as immutable black boxes, and whilst trying to prove a point by rolling it back manually, drops all tables by mistake when a cat treads on the keyboard
--
† excuse: "it's for reporting"
What happens if something goes really wrong after the production deploy? Is there a way to skip steps if you need to quickly push an emergency fix?