This video demonstrates how to implement passwordless authentication using Amazon Cognito and the AWS passwordless authentication solution. Otto Cruiser, a Senior Solutions Developer at AWS, showcases the deployment of a sample web application with FIDO2/WebAuthn support and magic link sign-in. He walks through setting up the backend using CDK, deploying the frontend, and demonstrating the user experience of registering FIDO2 credentials and signing in without a password. The solution aims to enhance security by eliminating the risk of stolen passwords while providing a frictionless authentication experience for users.