[daxfohl]

I'd say the real advantage is that if you need to change it you don't have to deploy your monolith. Of course, the relative benefit of that is situationally dependent, but I was recently burned by a team that built a new replication handler we needed into their monolith, and every time it had a bug, and the monolith only got deployed once a week. I begged them to put it into a lambda but every week was "we'll get it right next week", for months. So it does happen.

[hedora]

That’s orthogonal to microservices. They could deploy the monolith multiple times a day.

Of course, that’d require CI, which clearly wasn’t working well in your example.

[daxfohl]

Correct. It's orthogonal in an ideal world, but in a real world where there's tech debt and competing priorities, it can very much come into play.