Dr. Ivar Jacobson has over 20 years experience in the design of large-scale real-time systems iin the telecommunications industry. He developed and early object-based design technique, a major portion of which has evolved into the international standard CCITT/SDL. He has extensive industrial teaching experience and has served OOPSLA, ECOOP and TOOLS program committees. Magnus Christerton, Patrik Jonsson and Gunnar Overgaard are actively involved in the development and use of Objectory at Objective Systems.