We have Exchange 2010 SP3 on premises. We want to deploy online archiving. Actually we have EOP but we add users to it manually.
I Known we need a Hybrid Deployment. Also, I found this on TechNet "Active Directory synchronization between the on-premises and the Office 365 organizations is a requirement for configuring a hybrid deployment"....
Then...is it necessary deploy a Synchronization server for Exchange Online Archiving ??