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It is hosted on AWS and utilizes various services and technologies for a robust, scalable application.\n\n## Features\nThe application supports the following features:\n- Create, retrieve, update, and delete TODO tasks.\n- Real-time updates and state management on the frontend.\n- Secure and scalable hosting on AWS.\n\n## Technical Details\n\n### Frontend\n\n#### Technologies \u0026 Libraries\n- React: A JavaScript library for building user interfaces.\n- Tailwind CSS: A utility-first CSS framework for rapid UI development.\n- React Context API: Used for state management across the React components.\n\n#### Key Components\n- TodoList: Displays the list of TODO tasks and handles interactions.\n- GlobalContext: Manages the global state of the application, including TODO tasks and loading states.\n\n### Backend\n\n#### Technologies \u0026 Libraries\n- Node.js: JavaScript runtime built on Chrome's V8 JavaScript engine.\n- AWS Lambda: Event-driven, serverless computing service.\n- AWS API Gateway: Fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs.\n- Amazon Cognito: Provides user authentication and authorization.\n\n#### Lambda Functions\n- CreateTodoLambda: Handles the creation of new TODO tasks.\n- GetTodosLambda: Retrieves all TODO tasks.\n- UpdateTodoLambda: Updates existing TODO tasks.\n- DeleteTodoLambda: Deletes TODO tasks.\n- GenPresignedUrlLambda: Generates presigned URLs for S3 uploads.\n\n### Infrastructure\n\n#### Technologies \u0026 Frameworks\n- AWS CDK: Framework for defining cloud infrastructure using familiar programming languages.\n- Amazon DynamoDB: NoSQL database service that provides fast and predictable performance with seamless scalability.\n- Amazon S3: Object storage service that offers industry-leading scalability, data availability, security, and performance.\n\n#### Key Constructs\n- BackendConstruct: Sets up the backend services including Lambda functions and API Gateway.\n- DataBaseConstruct: Manages the DynamoDB resources.\n- S3Construct: Manages the S3 buckets for static file hosting and image uploads.\n\n#### Deployment\n- S3 Bucket: Hosts the static files for the frontend.\n- CloudFront: CDN service that securely delivers data, videos, applications, and APIs to customers globally.\n\n### Security\n\n#### Authentication \u0026 Authorization\n- **Amazon Cognito**: Used for user authentication and authorization.\n- **API Gateway Authorizers**: Secures API endpoints using Cognito user pools.\n\n### Programming Techniques\n- **Infrastructure as Code (IaC)**: Using AWS CDK to define and provision AWS infrastructure.\n- **Serverless Architecture**: Utilizing AWS Lambda for business logic, reducing the need for server management.\n- **Continuous Integration and Deployment**: Automated build and deployment pipelines enhance the development process.\n\n## Conclusion\nThis project leverages modern web technologies and AWS services to deliver a scalable and maintainable TODO web application. 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