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sendzen-io / AWS-Cognito-WhatsApp-OTP-Authentication

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This project shows how to implement AWS Cognito authentication with WhatsApp OTP using Node.js & C# in AWS Lambda. The solution includes a UI built in React/Next.js and uses the Serverless Framework to deploy the Lambda functions to AWS. It supports login and signup flows, including phone-only and email + WhatsApp authentication using AWS Cognito.

aws-lambda aws-cognito whatsapp-otp whatsapp-authentication whatsapp-otp-authenttication serverless-lambda sendzen free-whatsapp-api authentication-with-otp
  • Updated Oct 6, 2025
  • TypeScript

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