Cities are becoming a factor of increasing international importance. All around the world, urban actors from politics and administration, industry, science and civil society are faced with comparable issues in the field of urban development. Even if the solutions needed are local, their relevance is increasingly global.
The urgent challenges of worldwide urbanisation, such as urban population growth, poverty and social segregation, mobility and environmental problems, climate change as well as efficient provision of public services, call for efficient and innovative solutions. These are the preconditions for sustainable urban development. In the course of global developments, inclusive, productive, efficient and resilient cities have to master transformations that can be effectively supported by joint learning processes.