How would it compare to running as serverless containers (rather than ECS) like Google Cloud Run or Azure Container Apps (true scale to 0)?
It seems like using serverless containers would meet most of the same objectives so I'm not clear where the delineation is here.
OpenNext does model [0] incremental static regeneration, but beyond that I actually don't know, or at least don't recall. OpenNext doesn't do per-route lambdas like vercel does, so it's not like you get any behavior differences there.
I _think_ you can get scale to zero on Lambda by deploying a docker container, too.
[0] https://opennext.js.org/aws/v2/advanced/architecture