“…The standard defines 100 indicators, including the methodology for their calculation. These indicators can be used by cities of different sizes to measure their level of development from the following points of view: social, economic and environmental [68,69]. All indicators have been grouped into 17 thematic areas concerning the city: economy, education, energy, environment, finance, crisis management, local government bodies, recreation, security, solid waste, telecommunications and innovation, transportation, urban planning, wastewater management and water and sewage management.…”