Topic Last Modified: 2012-10-01

The following list describes the requirements for implementing unified contact store in Lync Server 2013:

• You must be running Microsoft Lync Server 2013 and Exchange 2013.

• Users must use Lync 2013 to initiate the migration of contacts from Lync Server 2013 to Exchange 2013.

• User mailboxes must be migrated to Exchange 2013.

• You must have server-to-server authentication configured between Lync Server 2013 and Exchange 2013.

  Note:
  For detailed requirements about setting up authentication between Lync Server 2013 and Exchange 2013, see Managing Server-to-Server Authentication (Oauth) and Partner Applications in the Operations documentation.