In this scenario, an enterprise distributes customer data between three master servers based on geographical location. Customers that are based in the United Kingdom have their data stored on a master server in London. French customers have their data stored on a master server in Paris. The data for Japanese customers is stored on a master server in Tokyo. Customers can update their own data through a single web-based interface.
Users can update their own information in the directory using a web-based application. During the authentication phase, users enter an email address. email addresses for customers in the UK take the form *@uk.example.com. For French customers, the email addresses take the form *@fr.example.com, and for Japanese customers, *@ja.example.com. Directory Proxy Server receives these requests through an LDAP-enabled client application. Directory Proxy Server then routes the requests to the appropriate master server based on the email address entered during authentication.
This scenario is illustrated in the following figure.