In future more and more people will live in urban areas. As the most important living environment and economic framework, cities are responsible for the greater part of global energy consumption. To minimize impact on the climate, conserve resources and ensure that the city of the future provides true quality of life and remains an attractive location for business in the long-term, new strategies and pioneering solutions are necessary. Austrian research and technology development in the Smart City sector is embedded in a range of international activities. In Austrian cities and communities new technologies and strategies for the Smart City are being developed further and showcased in real life.