“…U4SSC proposes 90 indicators under ICT, productivity, infrastructure, environment, energy, education, health, culture, safety, housing, and social inclusion pillars [31,32]. under the categories: the geographically balanced settlement, the freshwater, wastewater, the quality of ambient air and atmosphere, the noise pollution, the sustainable land use, waste generation and management, health, safety, fire and emergency response, poverty, transportation, natural hazards, adequate housing, shelter, the security of tenure, access to credit, access to land, promote social integration and support disadvantaged groups, culture, recreation, availability of local public green areas and local services, participation and civic engagement, transparent, accountable and efficient governance, government, sustainable management of the authorities and businesses [6,8,26,[33][34][35][36] The literature addressing smart city services is selected from the Google Scholar results using keywords of smart, city, and service models. The inclusion criteria are the literature published from urban-related journals, which means the technical-driven journals are excluded due to the study orientation.…”