Authenticator Lite is a new feature from Microsoft that allows users to satisfy a multifactor authentication (MFA) requirement using their smartphones instead of a dedicated authenticator app. With Authenticator Lite, users can easily approve Azure MFA prompts within the Outlook mobile app on iOS and Android, without needing to use the Microsoft Authenticator app separately.
This feature provides a more convenient and streamlined MFA experience, as users don’t need to switch between apps to perform the MFA check. Additionally, Authenticator Lite is easier to set up compared to the traditional Authenticator app, as the process only requires users to enter their phone number to get started.
Authenticator Lite is still in preview at the time of writing, so it is subject to change before it is released for general availability. Authenticator Lite offers an easy and user-friendly way to enhance security for Outlook mobile users and is expected to provide more such features as it continues to develop.