Hi All,
We are due to perform a Cutover Migration from our OnPrem Exchange 2010 deployment to Exchange Online soon, and the company has also expressed an interest in Lync Online.
We previously had a Lync Online subscription associated on our existing Tenant, but it wasn't being used so we dropped the subscription.
My question is, once we have performed the Cutover Migration to Exchange Online, and are using DirSync to sync our AD user account information with our cloud user accounts under Exchange Online, if we deploy Lync Online, will Lync use the existing cloud accounts from Exchange Online, or will Lync want to speak to our OnPrem AD to authenticate our OnPrem AD user accounts? I am hoping that it is the former, and Lync will simply use the credentials of the Exchange Online user accounts.
Thanks in advance.
Dave