What is AD?

Active Directory Domain Services overviewMicrosoftLearn

Group scope: Active DirectoryMicrosoftLearn

What Are Security Principals?MicrosoftLearn

Managing Flexible Single-Master OperationsMicrosoftLearn

Active Directory Domain Services Functional LevelsMicrosoftLearn

What Is Kerberos Authentication?: Logon and AuthenticationMicrosoftLearn

Features of EFSMicrosoftLearn