A smart city is a place where traditional networks and services are made more efficient with the use of digital solutions for the benefit of its inhabitants and business.
A smart city goes beyond the use of digital technologies for better resource use and less emissions. It means smarter urban transport networks, upgraded water supply and waste disposal facilities and more efficient ways to light and heat buildings. It also means a more interactive and responsive city administration, safer public spaces and meeting the needs of an ageing population.
Smart cities are intelligent cities. Smartness of economy, people, governance, mobility, environment, and living are the defining characteristics of smart cities. Intelligence in a smart city is built upon measuring phenomena, or things, of interest, and using them for making smart decisions. Measuring things using sensors has been considered as the key aspect of a smart city.