Active Directory (AD) Synchronization
Autotask allows you to automatically create new Autotask contacts or update existing Autotask contacts from Active Directory.
Up to 400,000 contacts can be synced, 500 at a time. Synchronization is one way. Information always flows from Active Directory to Autotask, never the other way. To sync contacts, steps are required in both Active Directory and Autotask. Refer to: