Abstract: A Service Network and Personal Service Environment Manager host and manage functionality shared among applications and user groups to provide common, application-independent directory services that serve as a logically central point of access to data. In particular, end-users can manage their service profiles in access- and location-independent scenarios. The PSEM includes functions for providing and managing service data, end-user profile data, and end-user service profile data. Among others, important aspects of the PSEM are its interfaces to other entities and functions, its distinguishing between user profile data and service-related data (i.e., service profile data and service data), and its further distinguishing between service profile data and service data.