With a REST API, there are a few options you have as to how each API endpoint maps to a function. The primary options in this design are whether to have a single Lambda function handle a single HTTP verb/resource combination, or whether to have a single lambda function handle all HTTP verbs for a particular resource. It should become more evident as we work through this chapter that Lambda function organization and application code organization are related, but not the same:
In the preceding diagram, we see a possible Lambda function layout for a REST API. On the left, unique functions handle a unique CRUD ...
