Microsoft Authenticator is a mobile application designed to enhance the security of your digital accounts by implementing two-factor authentication (2FA). This added layer of protection requires users to verify their identity using both their password and a secondary method, such as a one-time passcode or approval notification sent to their smartphone. By supporting a wide range of personal, work, and third-party accounts, Microsoft Authenticator offers a user-friendly, secure, and convenient way to safeguard your digital identity from unauthorized access.