Being able to run the containers locally helps, but I have hit a myriad of issues which occur in the lambda runtime, but not when running the service locally.

Being able to run the containers locally helps, but I have hit a myriad of issues which occur in the lambda runtime, but not when running the service locally. With EC2 or ECS backed by EC2 there is much less impedance mismatch between local dev environments and prod environments which results in less surprises.