The growth of the global population cannot be defined as uniform: there are areas in the world where the growth rate is higher, while in others, there is no growth. Similarly, the growth of the urban population follows a significantly higher pace compared to the non-urban population. This irreversible trend will lead the urban population to increase from 55% in 2018 to 66% by 2050: two out of three people in the world will soon be living in cities. What will be the consequences of this phenomenon? An obvious expansion of urban areas, an increase in air pollution, a greater need for services such as public transportation, waste management, schools, hospitals. Each of these points represents a separate challenge that space technologies can contribute to: satellite data can be integrated into urban planning tools to build more welcoming, sustainable, and safer cities, with better service distribution, improved traffic flow, and so on. Certainly, it requires leadership capable of providing a vision for the cities of tomorrow, but technology can undoubtedly help adopt data-driven governance and improve the management of urban spaces.