Health technology assessment (HTA) has become increasingly important in the European Union as an aid to decision making. As agencies and programs have been established, there is increasing attention to coordination of HTA at the European level, especially considering the growing role of the European Union in public health in Europe. This series of papers describes and analyzes the situation with regard to HTA in the 15 members of the European Union, plus Switzerland. The final paper draws some conclusions, especially concerning the future involvement of the European Commission in HTA.