AWS Cognito
AWS Cognito is a managed service from Amazon Web Services that provides user authentication, authorization, and user management for web and mobile applications. It handles user sign-up, sign-in, and access control, supporting social identity providers (like Google or Facebook), enterprise identity providers via SAML 2.0, and built-in user directories. It integrates with AWS services and other applications to secure access to resources.
Developers should use AWS Cognito when building applications that require secure user authentication without managing the underlying infrastructure, such as mobile apps, web apps, or serverless backends. It is particularly useful for scenarios needing multi-factor authentication, social logins, or compliance with security standards, as it offloads complexity and scales automatically with user demand.