The Ericsson Centralized User Database (CUDB) is an extensible, high-performance, subscriber-centric database system, able to consolidate subscriber data for several application Front Ends (FEs). This telecom-grade, real-time, geographically distributed database system is able to store both static and dynamic data, as well as subscriber-related service data. CUDB provides an enhanced, controlled access to subscriptions and allows traffic business growth by offering a single point of provisioning, along with the effortless introduction of new services in a network through simplified subscriber and service management with significant cost savings.