Qwest Communications International Inc. implemented Universal Description Discovery and Integration (UDDI) Services in Windows Server 2003 within their organization. Based on the Enterprise UDDI standard, the implementation in Windows Server 2003 provides an infrastructure for XML Web services, allowing organizations to run their own UDDI directory where Web services and other programmatic resources can be organized and cataloged. This in-depth case study published by Microsoft in 2003 describes the process Qwest used to select and deploy UDDI Services in their heterogeneous environment.