Kubach, MichaelRoßnagel, HeikoOly, LennartWehrenberg, ImmoHühnlein, DetlefRoßnagel, Heiko2017-06-302017-06-302014978-3-88579-631-2This paper introduces a development approach and a novel architecture for cross company identity management and authentication. It aims to design an architecture, which is practically implementable in the highly collaborative environment that exists in the automotive industry. The paper sketches the conducted marked research to obtain such a model and presents an architecture design based on a trusted intermediary.enText/Conference Paper1617-5468