ITU‐T's Technical Reports and Specifications 349 2. These innovation solutions address the following urban dimensions: a. People: in terms of discovering and meeting today and future generations' requirements; b. Living: by enhancing quality of life and social coherency, as well as efficiency regarding energy, food, water, etc.; c. Environment: which includes protection, waste and emissions control against climate change; d. Governance: in terms of ensuring urban utility and service availability; e. Economy: in terms of sustainable growth and city competitiveness (attracting habitants, visitors and businesses). Other approaches [1, 2] discuss about urban mobility in terms of transportation, which can be concerned part of the above Living dimension; resilience in terms of resistance against natural disasters, pandemics, terrorist attacks, accidents, etc. [3], which can be addressed by the above environment and governance SSC dimensions (Figure 4); innovation in terms of urban innovation [4], which is mainly disruptive, although the smart sustainable city becomes steadily a social innovation [5]. On the other hand, ITU Focus Group on SSC (FG‐SSC) has delivered its document regarding Key Performance Indicators' (KPIs) definitions, which aligns to the United Nations Habitat dimensions (Table 1). Table 1 – ITU SSC key performance indicators (KPIs) SSC dimension ICT Environmental sustainability Productivity Quality of life Equity and social inclusion Physical infrastructure The above characteristics illustrate the complex SSC nexus (shown Figure 1), where the five dimensions match the SSC KPIs (Table 2), matching was performed with the comparison of SSC KPIs with each of these dimensions and an important finding showing that complete matching is performed between ICT, Quality‐of‐Life and Physical infrastructure SSC KPIs with SSC dimensions, while the Living and Government SSC dimension matches to all SSC KPIs.