An identity management tool provides identity management across multiple domains, providing a single access point not only for information for runtime, network, and service layer information, but also for systems such as business support systems (BSS), operational support systems (OSS), and third party systems. The identity management tool creates a unified user profile that maps customer identities across the various domains, and presents the information in a virtual directory wherein the information appears to come from a single source, creating a central data hub for the various systems. This aggregation provides for the same experience and service across various access networks and using various channels. Such an architecture allows billing and service information to be shared with subscription and customer information, even though the data is substantially unrelated data from disparate data sources, without the need to combine schemas or aggregate the data into a single data store.