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Industry and end users interest in personalization of services and user devices continues to increase. Many user devices and services already contain settings and preferences that are specific to that user device or a network and unrelated to any other. Behind every instance of personalization is a profile that stores the user preferences, context of use and other information that can be used to deliver a user experience tailored to the individual userspsila needs and preferences. In order to make use of the user preferences for a range of services and devices, there is a need for standardization of preferences and the architecture that enables their interoperability. In this scenario, the paper illustrates how two complementary technologies, XDM by OMA and XDI by OASIS, may be seamlessly integrated in Next Generation Networks to enable interoperability of user profile data management between telecommunication and Internet services.