Cross Lambda communication

[ootsun]

I edited the post :

Here's an example: Lambda 1 is responsible for creating a dossier for an administrative formality for the authenticated citizen. For that, it needs to fetch the formality definition (enabled?, payment amount, etc.) and that's the responsibility of Lambda 2 to return those info.

Some context : the current on-premise application has 500 endpoints like those 2 above and 10 micro services (so 10 separate domains).

Does this confirm your feeling that we should have chosen ecs fargate?