Everyone knows that modern smart phones can be not only used for speaking to other people. You can play games, listen to music, or surf the internet, for example. But the growing computing power of mobile phones paired with the ability to connect to different types of networks enables the invention of new services which have an additional value for the user.The project IASON (founded by the Artificial Intelligence research group of the University Koblenz-Landau) delivers a new location-based approach for announcing services that are smartly matched against the user profile stored on the phone. The design also considers the often neglected aspects of privacy and cost effectivity.The matchmaking between announced services and user profiles in IASON is based on Ontologies and Description Logics as a semantic language. But how can a service provider understand and use these scientific constructions in order to built up and maintain his content? In this diploma thesis, a content management for IASON is developed. In contrast to usual content management systems, the focus is set on the semantics of content. To demonstrate its abilities, the KI2005 conference was taken for a showcase.