I just started working for a company that has somewhat implemented Office 365 to about 100 users. They are mostly using it for Exchange Online. No ADFS or AD Sync has been done between the on-premise domain and Office365.

The same user accounts do exist in the local domain.

Once we get ADFS and AD Sync working what will happen between the Office365 accounts and the local accounts. For instance, in Office365 we have janedoe@testdomain.com and locally we have a user janedoe@testdomain.com. Will the accounts just sync together and use the information from the local domain since the IDs are the same.

• Edited by rlawrimore 18 hours 31 minutes ago

Hi,

This is the forum to discuss questions and feedback for Microsoft Office client. There is so much about Office 365 Directory integration aspect here, I would suggest you to post in the forum of Office Community, where you can get more experienced responses:

http://community.office365.com/en-us/f/613.aspx

The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding.

Regards,

Ethan Hua
TechNet Community Support