Customer Master Data Management (CMDM) involves managing and maintaining accurate customer information through data collection, organization, and consolidation from various sources. The goal is to create a unified view of each customer, known as a "golden record," containing essential details like personal information, purchase history, and preferences. CMDM enables businesses to understand customer behavior, personalize experiences, and enhance marketing campaigns and customer service. Posidex Technologies is a company that provides CMDM solutions and services.