Master data is the consistent and uniform set of identifiers and extended attributes that describes the core entities of the enterprise including customers, prospects, suppliers, sites, hierarchies, chart of accounts and many more industry specific entities. Master data management (MDM) is a discipline in which business and IT work together to ensure the uniformity, accuracy, semantic consistency and accountability of the enterprise’s official shared master data assets. Prerequisite for successful master data management implementation is enterprises’ awareness and acknowledgement of data as a crucial business asset. This lecture gives an introduction to master data management flavors, overview of benefits gained by its implementation and current MDM market overview.