Serverless Developer Guide
Integrate your API resources
During the creation of an API method, you must integrate it with an backend endpoint. A backend 
endpoint is also referred to as an integration endpoint and can be one of the following:
• Lambda function to invoke
• HTTP server to forward the request to
• AWS service action to invoke
Integration of your API is how your frontend and backend communicate.
Like an API request, an API integration has an integration request and an integration response. 
The integration request encapsulates the HTTP request received by the backend. The integration 
response is an HTTP response that wraps the output returned by the backend.
Setting up an integration request involves the following:
• Conﬁguring how to pass client-submitted method requests to the backend
• Conﬁguring how to transform the request data (REST API only), if necessary, to the integration 
request data
• Specifying an integration endpoint: Lambda function, HTTP server, or AWS service action
For advanced non-proxy integrations (REST API only), setting up an integration response involves 
the following:
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