API Gateway

What

A managed REST API service that helps you to build REST APIs without managing too much code

diagram
regional service
similar to AppSync
no boilerplate code
- just focus just on the code that should be executed when a request arrives
Define an API structure
- Define resources (paths, http methods, etc)
- enforce query parameters/authentication
  - no code that handles the incoming request in the first place or filters the request
- Define schema & response codes for structuring responses/requests
Define how to handle requests
- Define rules for handling & parsing requests
  - automatically extracting data from requests
- Configure response creation & forwarding logic
  - define which code should be for which path to be executed for the response
  - very common to use Lambda for on demand execution
    - fetches data from a database and hands it to the API gateway, which puts the data into a response that’s sent back to client
- Real time connections with websockets
Test & deploy
- very easy to test
- deploy stages (multiple different versions)

Configuration