The article examines international experience, practices and approaches to the construction of the "Smart City" development concept, its functional content and components. It was determined that the "smart city" as a trend of the last decade is a city that integrates green areas into the urban space and in which traditional systems work as a single coordinated mechanism, and as a result more effectively due to the use of advanced technologies. It was found that a modern smart city due to global urbanization and migration, the spread of environmental awareness, rapid technogenic progress at the global level, intellectualization, digitalization, and the growth of the population of cities, should primarily take into account economic, ecological, and social factors, with further actualization of the issue of healthy progress environment, promoting entrepreneurship and providing a high standard of living for the population. The research highlights the key characteristics of a "Smart city" – automation of routine functions, efficiency of territory use, cost savings, rational use of natural resources, quick response to environmental challenges, etc. The theoretical and categorical vision of the definition of "Smart City" according to the vision of international organizations is systematized. On the basis of the proposed revision, it is determined that today, despite the ambiguity of approaches to the development and implementation of the "Smart City" concept, the leading countries of the world and their individual cities are actively engaging digitalization processes in their own economy in order to use the opportunities of powerful own development. Therefore, the justification of the need to conduct this study was carried out in order to ensure the successful progress of the cities of Ukraine and their rapid reconstruction. Since it has been found out that currently domestic technologization mostly begins with the use of individual innovations to solve the most pressing problems facing cities.