OAuth
OAuth is an open-standard authorization framework that enables third-party applications to obtain limited access to a user's resources on a service, such as a web server, without exposing the user's credentials. It works by delegating user authentication to the service that hosts the user account and authorizing third-party applications to access the account. This is commonly used for social logins, API access, and secure data sharing between applications.
Developers should learn OAuth when building applications that need to integrate with external services like Google, Facebook, or GitHub, as it provides a secure and standardized way to handle user authentication and authorization without storing sensitive passwords. It's essential for implementing features like single sign-on (SSO), accessing user data from APIs, and ensuring compliance with security best practices in modern web and mobile apps.