AWS Amplify Feature: Extensibility

Modify fine-grained backend resource settings and override via CDK. Amplify does the heavy lifting for you. For example, use Amplify to add new Cognito resources with default settings to your backend. Override just the settings you want with 'amplify override auth'.

The Amplify CLI provides the ability to add custom AWS resources with CDK or CloudFormation. Running the 'amplify add custom' command in your Amplify project provides CDK or CloudFormation placeholders along with mechanisms to reference other Amplify-generated resources.

Add business logic to your backend using Amplify functions and containers and allow them to access existing AWS resources. For example, grant functions access to an SNS topic to send an SMS or allow your container to access an existing database.

Integrate your existing resources, such as Amazon Cognito user pool and federated identities (identity pool), or Storage resources like DynamoDB + S3, into an Amplify project. For example, use your existing Cognito resources as an authentication mechanism for your GraphQL API, Storage (S3), and more.

Use Command Hooks to run custom scripts before, during, and after Amplify CLI commands ('amplify push', 'amplify api gql-compile', and more). Trigger validation checks, run credential scans, or clean-up build artifacts during deployment. Extend Amplify’s best-practice defaults to meet your security guidelines and operational requirements.

Use Amplify with existing DevOps tools or integrate into your in-house deployment systems. Amplify’s export feature lets you export your Amplify project to your preferred tooling using CDK. Export Amplify CLI build artifacts, including CloudFormation templates, API resolver code, and client-side code generation.