The document discusses definitions of smart cities and dimensions of smart cities. It identifies six key dimensions of smart cities: smart economy, smart people, smart governance, smart mobility, smart environment, and smart living. These dimensions are associated with different aspects of urban life. The document also discusses challenges cities face in Europe, South/East Mediterranean countries, and Malaysia according to these six dimensions. Finally, it provides examples of smart city initiatives and projects in Seoul, Singapore, and Iskandar Malaysia.