Building Centralized Master Data Hub: Architecture, APIs, and Governance

Many enterprises operating with a large legacy application landscape struggle with fragmented master data. Core entities such as country, location, product, broker, or security are often duplicated across multiple application databases. Over time, this results in data inconsistencies, redundant implementations, and high maintenance costs. This article outlines Master Data Hub (MDH) architecture , inspired by real-world enterprise transformation programs, and explains how to centralize master data using canonical schemas, API-first access, and strong governance.