This document discusses smart city concepts and policies from several international organizations. It summarizes that smart cities use ICT to improve resource efficiency and quality of life. They are well-performing in 6 areas: economy, governance, environment, mobility, living, and social capital. The UNECE aims to promote smart city solutions for transition countries through networking and pilot projects. ISO standards support sustainable development at the city level. The EU Innovation Partnership focuses on sustainable mobility, infrastructure, and decision-making. Regional examples of smart city initiatives are also provided.