News, tutorials, and insights from the LocalStack team on cloud emulation, product showcases, and local development practices.https://blog.localstack.cloud/https://blog.localstack.cloud/testing-cognito-authentication-flows-locally-with-localstack/https://blog.localstack.cloud/testing-cognito-authentication-flows-locally-with-localstack/Learn how to build and test Cognito flows against LocalStack: the hosted UI with auth code and PKCE, JWT verification against the pool's JWKS in an API Gateway authorizer, TOTP multi-factor auth, and machine-to-machine tokens from the client credentials grant.Fri, 25 Sep 2026 00:00:00 GMThttps://blog.localstack.cloud/build-authenticated-apps-locally-keycloak-localstack/https://blog.localstack.cloud/build-authenticated-apps-locally-keycloak-localstack/Learn how to use the Keycloak extension to add OAuth2/OIDC authentication to your AWS apps. Walk through a sample app with API Gateway, Lambda, and DynamoDB that uses Keycloak JWTs for role-based access control, all running locally without cloud dependencies.Mon, 20 Apr 2026 00:00:00 GMThttps://blog.localstack.cloud/how-to-test-cognito-integration-with-amazon-verified-permissions-using-localstack/https://blog.localstack.cloud/how-to-test-cognito-integration-with-amazon-verified-permissions-using-localstack/LocalStack now supports Amazon Verified Permissions (AVP), allowing you to test your application's authorization logic and Cognito integration entirely on your local machine. This tutorial shows how to use Cedar policies to validate access control without deploying to AWS.Wed, 25 Jun 2025 00:00:00 GMT