In Exchange 2010 SP1, the hierarchical address book (HAB) was introduced. This allows users with Outlook 2007 or later to browse for recipients using an organizational hierarchy. The idea is that you can give your users the ability to search for recipients based on your organization's structure, versus the Global Address List, which only provides a flat view. The configuration of a HAB can only be done using the Exchange Management Shell, and in this recipe, we'll take a look at an example of how you can configure this feature in your organization.
Let's see how to configure hierarchical address books using the following steps: