Serverless Developer Guide
You can use OpenAPI API deﬁnitions in AWS SAM templates for more complicated applications. 
Or, you can build APIs with API Gateway and export the OpenAPI 3.0 deﬁnition to use with other 
services.
Related resource(s):
• OpenAPI FAQ - Introduction and FAQ for the OpenAPI Speciﬁcation
• Working with API Gateway extensions to OpenAPI - Learn how to use API Gateway extensions to 
the OpenAPI speciﬁcation
Additional resources
Oﬃcial AWS documentation:
• API Gateway Developer Guide - extensive and complete documentation for Amazon API Gateway
• REST API tutorial - REST API tutorial
• HTTP API tutorial - HTTP API tutorial
Resources from the serverless community:
• Building Happy Little APIs | I Didn’t Know Amazon API Gateway Did That - AWS video series 
introducing to API Gateway
Next Steps
Learn how to use API Gateway in an online workshop
Learn by doing in the Serverless Patterns Workshop. The ﬁrst module introduces a 
serverless microservice to retrieve data from DynamoDB with Lambda and API Gateway.
Additional modules provide practical examples using infrastructure as code to deploy 
resources, test, and build with common architectural patterns used in serverless solutions.
Additional resources 71