SAM and SAR

AWS SAM streamlines serverless application development using a simplified syntax, while SAR enables the discovery and deployment of reusable serverless applications and components through a managed repository.

Serverless Application Model

AWS Serverless Application Model (SAM) is an open-source framework for building serverless applications in a standardized way. It extends AWS CloudFormation to provide a simplified way of defining the Amazon API Gateway APIs, AWS Lambda functions, and Amazon DynamoDB tables needed by a serverless application. In addition, it offers tools to locally test and debug applications before taking them to the cloud