Another approach to providing distributed access where users do not have organizations in all vCloud Director sites, is to have the customer provisioned to all sites in a particular geographic region or other defined group of service locations. This breaks the single, global access model into multiple, smaller groups. If a customer organization only exists in one site, they can log in directly. If their organization is provisioned in all sites within a “region” or “zone”, they can log in at that level and be directed to one of the sites within that associated group. If the customer has service in all sites, they can still log in to the global level and be directed to any of the provider’s sites. The following figure shows a hierarchical DNS naming model with access at the site, region, or global levels.