AppSync

This AWS CDK template sets up a backend infrastructure consisting of two Amazon DynamoDB tables, "Users" and "Todo", along with their respective AWS Lambda functions as resolvers for each CRUD operation. AWS AppSync is used as the API layer, providing a GraphQL interface for the frontend to interact with the backend resources.

The template also integrates AWS Cognito for authentication and authorization, utilizing a User Pool and User Pool Client. This ensures secure access to the AppSync API and DynamoDB tables.

Key components:

• DynamoDB tables for "Users" and "Todo"

• Lambda resolvers for CRUD operations

• AWS AppSync for GraphQL API

• Cognito User Pool and User Pool Client for authentication and authorization

• IAM roles and policies for resource access

With this template, developers can quickly deploy a scalable and secure backend infrastructure that leverages AWS AppSync, Lambda, DynamoDB, and Cognito, all defined and managed using AWS CDK.