Amazon Lambda applications - Amazon Lambda
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Amazon Lambda applications

An Amazon Lambda application is a combination of Lambda functions, event sources, and other resources that work together to perform tasks. You can use Amazon CloudFormation and other tools to collect your application's components into a single package that can be deployed and managed as one resource. Applications make your Lambda projects portable and enable you to integrate with additional developer tools, such as Amazon CodePipeline, Amazon CodeBuild, and the Amazon Serverless Application Model command line interface (Amazon SAM CLI).

The Amazon Serverless Application Repository provides a collection of Lambda applications that you can deploy in your account with a few clicks. The repository includes both ready-to-use applications and samples that you can use as a starting point for your own projects. You can also submit your own projects for inclusion.

Amazon CloudFormation enables you to create a template that defines your application's resources and lets you manage the application as a stack. You can more safely add or modify resources in your application stack. If any part of an update fails, Amazon CloudFormation automatically rolls back to the previous configuration. With Amazon CloudFormation parameters, you can create multiple environments for your application from the same template. Amazon SAM extends Amazon CloudFormation with a simplified syntax focused on Lambda application development.

The Amazon CLI and Amazon SAM CLI are command line tools for managing Lambda application stacks. In addition to commands for managing application stacks with the Amazon CloudFormation API, the Amazon CLI supports higher-level commands that simplify tasks such as uploading deployment packages and updating templates. The Amazon SAM CLI provides additional functionality, including validating templates, testing locally, and integrating with CI/CD systems.

When creating an application, you can create its Git repository using either CodeCommit or an AWS CodeStar connection to GitHub. CodeCommit enables you to use the IAM console to manage SSH keys and HTTP credentials for your users. CodeConnections enables you to connect to your GitHub account. For more information about connections, see What are connections? in the Developer Tools console User Guide.

For more information about designing Lambda applications, see Application design in Serverless Land.