[meekins]

API Gateway becomes your HTTP server, your routing layer defined in Flask/Sinatra/Express & co is implemented in API GW integration configuration and handling routed requests is implemented as Lambdas that process events from API GW.

[mozey]

With AWS Lambda I try to avoid using API Gateway as it seems to me that is exactly where the lock-in occurs. Instead I have one catch-all route on API GW and I keep my routing layer in the app. This also makes it easier to run the app on dev without recreating the entire AWS environment

[scarface74]

If you work for any size corporation, they aren’t going to just switch their infrastructure because a developer said that they pinky promise the migration will be easy.

You’re always for all practical purposes locked into your infrastructure once your business grows.

[meekins]

You can absolutely do that. Then you just need to do more custom work to enable route level observability and metrics.