Active Directory Object Synchronisation
The following table describes the Active Directory object types and their synchronisation status when using the AD Connect client or service.
| Object | AD Connect (on-premise) with Exchange Server 2010 or below | AD Connect (on-premise) with Exchange Server 2016 or later | AD Connect (Azure) with Exchange Online / Office 365 | 
| User | Yes | Yes | Yes | 
| Shared Mailbox | No | Yes (v2.6+) | No (requires permissions) | 
| Contact, MailContact, MailForestContact | Yes | Yes | No | 
| Public Folder, PublicFolderMailbox | Yes | Yes (<= v2.6) No (> v2.6) | No | 
Please note that even if an object is synchronised it does not mean that it will be subject to billing. Please review the Product Usage guidelines.
