New mobile and digital technologies have begun to integrate with digital objects and enable cities to transform into Digital Transformation or Smart Cities. However, it is necessary to first measure at what stage this level of intelligence is. Therefore, to measure the sustainability and durability of digitalized cities as well as their smartness, "calculating the smartness, sustainability, and durability indices of cities through ISO Critical Success Factors (CSF) and indicator data ", has been determined as the aim of this research.
In this research, ISO CSFs and indicators were used to ensure global comparison of cities. ISO's 20 CSFs, which are used in many index studies, were used in the research. Different numbers of indicator values determined by ISO in different areas are primarily collected from Turkish municipalities and Turkish statistical institutions such as TUIK, BTK, SGK, MEB, TIM, TOBB, SB, CSB, etc. Sustainability, smartness, and durability index rankings and their City Maps were prepared based on CSFs from the collected data. Different ISO City Indices have been determined with the areas on these maps. This research is the first research conducted in Turkey using ISO indicators.