Got it. This is the og confluent cloud architecture, then. That much data crossing availability zones might surprise people people on AWS since that will add at least $0.04 for every gb sent in

I'm curious if it actually needs to be across AZs versus if it just needs a few instances but yes as written there is a trade off happening.

The other route for fast S3 writes others have used (Turso springs to mind) is express S3 zones but those have a lot of region specific fine print still.