Making a city work: less isolated technology, more collective intelligence

Making a city work means ensuring that complex systems such as mobility, housing, environment, local economy, and social cohesion operate in a coordinated, efficient, and people-centred manner. For years, we have confused modernisation with isolated digitalisation. Platforms were purchased, sensors installed, and applications created. However, a smart city is not merely the sum of technological gadgets; it is primarily a change in governance model. Today, technological infrastructure is indispensable. IoT sensors that monitor traffic, air quality, or noise levels enable quicker and more informed decisions. Integrated data platforms break down traditional silos between municipal departments. Digital Twins, digital replicas of the city, allow for simulating impacts before physically intervening in the territory. But the real challenge is not data collection; it is transforming that data into coherent political decisions. A city only works when data serves a strategy; otherwise, dashboards accumulate without changing reality. The technological 'brain' needs clear political leadership, defined priorities, and a long-term vision. A functioning city is one that respects people's time. Smart electrical grids, leak detection in water networks, and optimised waste management are no longer experimental innovations; they are demands for financial and environmental responsibility. Sustainability has ceased to be aspirational discourse; it is now a structural dimension of good municipal management. No city functions if it expels those who make it work. Teachers, doctors, police officers, municipal technicians, and essential workers need to be able to live in the city where they work. Without active affordable housing policies, the urban centre becomes a tourist scene or financial hub, but ceases to be a community. London, New York, and Amsterdam appear in international rankings of smart cities, but the biggest challenge is not in the rankings; it is in integration. Technology needs to engage with noise regulation, housing policy, climate strategy, and the financial capacity of municipalities. It is not enough to install sensors without a regulatory and operational framework that allows action on the collected data. And there is an essential question: technology must be feasible for residents. Ultimately, making a city work is an exercise in integrated governance. Because a city does not function when it is merely smart; it works when it is both smart and human, a sentient city.