Social Login is a feature that allows users to access websites or apps using their existing accounts from popular platforms like Google, Facebook, or Apple. Instead of creating a new username and password, users can authenticate with credentials from these trusted providers, streamlining the registration and login process. This method enhances user convenience, reduces password fatigue, and can improve security by leveraging established authentication systems. However, it may also share certain user data with the third-party provider and the site being accessed.