The United Nations Economic Commission for Europe (UNECE) and International Telecommunication Union (ITU) define
a smart sustainable city as an innovative city that uses ICTs and other means to improve quality of life, efficiency of urban operation and services, and competitiveness, while ensuring that it meets the needs of present and future generations with respect to economic, social, environmental as well as cultural aspects.
The World Competitiveness Center (WCC) defines a
smart city as one that strikes a good balance between its economic prowess (jobs and business activity included), applied technology, environmental concerns, and inclusiveness.