The rate of market and technological changes has accelerated dramatically. Central to a firm's competitive success in these conditions is its ability to evaluate, develop, and commercialize new technologies. This turbulent environment requires new, innovative methods. To succeed in these conditions, improved cooperation is recommended among functions within the company and between companies. In this exploratory study of two middle European Union countries, the extent that industrial companies in highly turbulent environments develop their internal and external interfaces is measured. The study also measures if those firms with well developed interfaces exhibit better new product performance than firms with less well developed interfaces. The results indicate that an effective design of the new product development process depends upon the characteristics of the competitive environment in which the firm operates.