“…These UI systems represent a paradigm shift in urban management, leveraging DTs, as well as data-driven insights, artificial intelligence, and interconnected networks to enhance the quality of life for citizens, while optimizing resource utilization. The adoption of UI based on DTs, and the integration of CPS, IoT, and data of the city, provide a cyber-physical counterpart to city systems, to increase the sustainable growth of the city and strengthening its functions, while ensuring the enhanced quality of life and health of the citizens [16,17]. Specific structures and IT technologies are necessary for the proper functioning of the DT context: network infrastructure, dedicated IoT sensor networks, information systems, and high-level web services, such as cloud or edge-computing environments [18], are required to collect and manage the heterogeneous data of the city [19,20] and to provide a proper hardware and software infrastructure to allow the execution of the required models, visualizations, and user interface functionalities [21,22].…”