Developing a REST API with the AWS SAM CLI

Lab Steps

Setting up the AWS SAM CLI
Defining a REST API Backed by Lambda and DynamoDB

Ready for the real environment experience?

Time Limit1h


The AWS Serverless Application Model (SAM) supplies built-in best practices for deploying your serverless applications. A REST API built with AWS SAM can be configured using shorthand syntax to express event source mappings, database relationships, and function declarations.

In this lab, you will use the AWS SAM CLI to develop a simple REST API backed by a Lambda function and a DynamoDB table. The lab will cover the built-in conventions and default values that are present in a simple SAM application.

Learning Objectives

Upon completion of this beginner-level lab, you will be able to:

  • Use the AWS SAM CLI to define the Serverless API, function, and table resources
  • Deploy a REST API backed by AWS Lambda and DynamoDB

Intended Audience

  • Cloud Architects
  • Software Engineers


Familiarity with the following will be beneficial but is not required:

  • AWS Serverless Application Model (SAM)
  • AWS Lambda
  • Amazon API Gateway
  • Amazon DynamoDB

The following content can be used to fulfill the prerequisite:

Environment before
Environment after
About the Author
Learning paths3

Jun is a Cloud Labs Developer with previous experience as a Software Engineer and Cloud Developer. He holds the AWS Certified Solutions Architect and DevOps Engineer Professional certifications. He also holds the AWS Certified Solutions Architect, Developer, and SysOps Administrator Associate certifications. 

Jun is focused on giving back to the growing cloud community by sharing his knowledge and experience with students and creating engaging content.