This chapter concludes the findings of the completed research and positions the three case study cities with regard to their sustainability goals. One overall finding is that sustainability has to be defined for each specific context and that good urban management is the key to achieving it. In addition, recommendations for responsible urban management, such as establishing strategies for sustainable urban development, promoting decentralization, improving cooperation, harmonizing strategies with legal regulations and planning instruments, enhancing public participation and monitoring and controlling urban development, have been distilled. These recommendations, although based on the analyses of the case study cities, are also relevant for any other comparable city striving for sustainability. Finally, emphasizing the need to train national and local authority staff in the latest implementation methods developed from continuing research closes the gap between academia and practice.