Learn more about organization relationships
Applies to: Exchange Online, Exchange Server, Exchange Server 2013
This feature of Exchange Server 2013 isn’t fully compatible with Office 365 operated by 21Vianet in China and some feature limitations may apply. For more information, see Learn about Office 365 operated by 21Vianet.
Organization relationships allow you to enable federated sharing with another federated Exchange organization for the purpose of sharing calendar free/busy information between users in both organizations. Requiring a federation trust with the Microsoft Federation Gateway, organization relationships are one-to-one relationships between two Exchange organizations, not a relationship between individual users in the Exchange organizations.