Master Data Management (MDM) is a hot topic. High-quality, low-redundancy reference data is essential in business today. Customer relationship management (CRM) without customer data integration is difficult. Effective supply chain management is equally difficult without integrated product, supplier, and partner data. These are but two examples among the many reasons that MDM - a relatively young discipline - has moved so rapidly from emerging to mainstream. MDM is no longer a "nice to have." It has taken a place among the essential competencies for business success.