Exchange 2013 debuted last year with the ability to configure a Hierarchical Address Book (HAB) for on premises deployments.

As many of our customers are migrating and evaluating the cloud, a consistent user experience between online and on premises deployments is not just a requirement, but an expectation. As such, we are really excited to announce the availability of HAB to Office 365 users, worldwide!   

Now, a tenant administrator for Office 365 is able to configure a HAB using the same commands one would in an on premises deployment.

For more information on how to configure and use a HAB, please refer to Hierarchical Address Books: Exchange 2013 Help‎.

FAQ

We are moving some of our user mailboxes to Office 365 while keeping some in our on premises infrastructure. Are the users able to see the same HAB?

No, we are working to resolve a possible issue of the HAB being out of sync in this hybrid deployment case. A solution will be available in the near future.

Can Outlook Web App (OWA) users use the HAB?

No, browsing the HAB is available for Outlook 2010/2013 only at this time.

Paul Lo