5.4.5.4 RDS AAD Auth Security
RDS AAD Auth is a variation of Enhanced RDP Security that is used to authenticate a user to an Azure AD-joined device or to a Hybrid Azure AD-joined device. Server authentication, encryption, decryption, and data integrity checks are implemented by leveraging the TLS security protocol, while user authentication is accomplished by exchanging RDS AAD Auth PDUs directly following the TLS handshake.<57>