Your Google Apps directory is a shared list of contacts that is viewable to your entire organization. It is important to note that members of your organization cannot add or remove contacts from the Directory.
Often times, an organization’s directory merely serves as a list of all the contact information for employees, but we think it can be utilized beyond just your user’s contact info.
If you are a school this is a great place to store parent contact info, and if you are a business you can fill your directory with your frequently contacted vendors. Editing your Directory is unfortunately not possible using only the Admin console, but with the use of this helpful marketplace app, making bulk changes is a breeze.