Fail returns a message with an HTTP 500.

Redirect returns a redirect to a new URL.

Reject returns a message with an HTTP 403.

Respond builds a response with a given HTTP code and text message.

Succeed returns a message with an HTTP 200.

Params allows looking up parameters from Stage Variables, Path Parameters, and the Lambda environment variables.

Request aliases the API GW Request type.

Response aliases the API GW Response type.