HTTP

HTTP server that can be used as a lambda via API gateway proxy
Locally, it has no difference from a typical NestJs backend
OR start locally to do frontend development with
Visit http://localhost:3000/docs to view OpenAPI specifications
Opted for a monolithic design as it simplifies development

Local

Uses a standard nestjs bootstrap script
Contains the OpenAPI and serve static modules
Use locally with: nx serve http

Lambda

Minimal modules
Does not have OpenAPI and serve static modules
Custom bootstrap script to help 'cache' the server instance between invocations

Testing

End-to-end tests contains test where multiple modules are required together as a whole
Controller level tests indirectly tests the service
Nothing is mocked, all requires a freshly seeded database