From past experience, CloudFormation is full of footguns that if you don't take time to understand them, you'll loose a foot and often in production. Most notably, when a rollback kicks in there is no way to stop it. And it largely locks you out until it's finished.

Kudos for publishing this, but why is it on Reddit instead of the Levels.fyi blog (https://www.levels.fyi/blog/)?

Just to be clear, I have no affiliation with levels.fyi, so I have no idea why they decided to post on Reddit rather than their blog. I just thought it was a interesting post to share.

Thanks for posting this—it's super interesting! I was just curious why the author of the Reddit post didn't publish it on their own blog, since it's definitely worth preserving there.