af-build-amplify-features

AWS Amplify Gen 2 backend architecture separates concerns across four tiers: UI in the frontend, data access via AppSync, and business logic within Lambda functions. This structure ensures presentation, data, and logic layers remain distinct and maintainable.

Wiring a Lambda function to an AppSync mutation in Amplify involves routing the mutation through API routes to trigger the Lambda resolver. This ensures business logic executes securely within Lambda before data manipulation occurs through AppSync.

Configuring user authentication and email notifications in AWS Amplify integrates Cognito for identity management and SES for email delivery. This setup securely handles user sign-ups while dispatching transactional emails directly from your application.

Business logic should reside in Lambda functions while data access is managed via AppSync in AWS Amplify development. This architectural guidance prevents common pitfalls by ensuring logic does not leak into frontend or API route layers.

Common AWS Amplify Gen 2 development pitfalls include placing business logic in the wrong tier and misconfiguring service integrations. This Skill provides structured rules to correctly wire AppSync, Lambda, Cognito, and SES across the four-tier architecture.

AWS Amplify Gen 2 fully supports integrating Cognito for authentication and SES for email notifications. These services combine to manage user identities and dispatch automated emails securely within your application workflows.