ManageEngine RecoveryManager Plus is a complete Active Directory and Exchange Online backup and restoration solution. Back up all AD objects in your domain and all items in your Exchange Online environment and restore AD objects and Exchange Online items to any previous version. Moreover, perform automated incremental backups, compress backups, and define a retention period for your backups.
ManageEngine RecoveryManager Plus - Subscription Model
Number of AD User Objects
(To backup Active Directory objects)