A portrait of…. ECM Vice President - Stefan Diender Since 1st January 2000, Stefan Diender is the CEO / Managing Director Amsterdam Tourist Board BV, holding company for BV Amsterdam Marketing & Data Center, Leisure Consultancy, Reservation Center, Tourist Office and Congress Bureau. An ECM Board member for the past two years, during the General Assembly in Gothenburg in June 2009, Stefan was elected the ECM Vice President for the Tourism Forum.