Joining a Mac to Active Directory has continued to get more and more difficult over the years. High Sierra and Mojave now require a Active Directory functional level of Windows Server 2008 or later and are still pretty tricky to get to join it.
When I started researching the topic I saw a whole lot of advice to install third party software to join a Mac to Active Directory. In most corporate environments installing third party software is frowned upon due to licensing and security considerations so I was determined to get the native Mac OS X tools to work.
This guide will walk you through the basic steps to join Active Directory without having to resort to using third party software.