366 ITU‐T's Technical Reports and Specifications architecture approach to smart city comes from [11] and can be utilized in the following analysis (Figure 11): 1) Smart City Networking Infrastructure and Communications Protocol: this module addresses the necessary infrastructure to deploy smart services and enhance living inside the city. Cities from scratch are based on innovations (both ICT‐based and non ICT‐based), which are embedded on city's hard infrastructure. For instance, a waste disposal, recycling and tele‐heating factory can be installed and interconnected with buildings inside the city (Clever rubbish) [14]. Moreover, fiber‐optic networks connect all local buildings with a central operating center, while smart buildings are accessible by their inhabitants via specific applications. In existing cities on the other hand, corresponding SSC cases integrate innovation with existing hard infrastructure with the IoT and basically with sensors that exchange data with specific applications. In such case, a corresponding modular analysis is depicted on. Moreover, protocol defines the codification for information interchange in SSC. 2) Applications: this module concerns all the smart applications, which are available inside the SSC. A well method for analyzing this module could be the classification of applications in the four SSC dimensions (Fig.1), including a separate group of mobility (i.e., intelligent transportation applications). It is analyzed in the following components: a. Mobility: it concerns the applications that deal with transportation services (i.e., intelligent transportation, parking location and payments, traffic management, etc.). b. Government: it represents applications regarding e‐government services (i.e., information and document retrieval, certificate applications, government procedures, deliberation and consultation, etc.). c. Economy: it contains applications in the business domain (i.e., e‐business, business information systems, etc.). d. Environment: this component utilizes applications for smart water and energy management, waste and emissions control, etc. e. Living: application of this component address education, tourism, safety, health and care services. 3) Business: it addresses all business groups, which are available inside the SSC and utilize the above mentioned applications. Some particular business domains concern the industrial sector, finance, creative companies, rural production (i.e., agriculture, fisheries, etc.) and the service sector. This particular module addresses the following information management issues [11]: a. User information for consumer behavior's detection. b. Business intelligence for statistical and feasibility studies. c. Industry information for market demand monitoring. d. Business information for commercial and financial analysis. e. Revenue Information for market cash flow and daily business activities' realization. f. Circulation Information for emerged business cases' estimation.