AWS SAM CLI is a command-line tool for building, testing, debugging, and deploying serverless applications on AWS.
The tool addresses the challenge of developing serverless applications that span multiple AWS services including Lambda, Step Functions, API Gateway, EventBridge, SQS, and SNS. It provides a local development environment that mimics AWS Lambda execution, allowing developers to build and test functions before deployment. The CLI handles compilation and packaging of Lambda functions for both zip and container image formats, supports custom build workflows via Makefile, and enables local testing of Lambda functions and API Gateway integrations within Docker containers.
Developers building serverless applications on AWS should consider this tool if they want to accelerate their development cycle with local testing capabilities and streamlined deployment workflows. The tool is particularly suited for teams using AWS SAM templates or CloudFormation for infrastructure as code. It includes features for syncing changes to cloud environments during development, tailing CloudWatch logs, and viewing X-Ray traces. The CLI also provides initialization templates for new projects and prebuilt CI/CD pipeline templates for popular systems, reducing boilerplate setup work.
The project maintains active development with regular feature additions and improvements to the developer experience. The tool receives ongoing enhancements to support new AWS services and runtimes. Documentation and community resources including workshops and blog content are regularly published to help developers adopt and use the tool effectively. The project maintains a public roadmap and active community engagement through Slack channels.
