ITU‐T's Technical Reports and Specifications 81 Ref. No. Category Definitions/Features Key concept/ Keywords Source 39 Corporate We define a \"smart sustainable city\" as the city that uses information technology and communications to make both its critical infrastructure, its components and utilities offered more interactively, efficiently and where citizens are made more aware of them. It is a city committed to the environment, both environmentally and in terms of cultural and historical elements. ICT, infrastructure, utilities, interactive, efficient, aware, environment, culture, history. Telefónica (2014) 40 Corporate A city that uses data, information and communication technologies strategically to: (i) provide more efficient, new or enhanced services to citizens. (ii) monitor and track government's progress toward policy outcomes, including meeting climate change mitigation and adaptation goals. (iii) manage and optimize the existing infrastructure, and plan for a new one more effectively. (iv) reduce organizational silos and employ new levels of cross‐sector collaboration, enable innovative business models for public and private sector service provision. Quality of life, authority, development, citizens, infrastructure. Arup, Accenture, Horizon, University of Nottingham (2014) 41 Corporate The \"smart city\" concept includes digital city and wireless city. In a nutshell, a smart city describes the integrated management of information that creates value by applying advanced technologies to search, access, transfer, and process information. A smart city encompasses e‐home, e‐office, e‐government, e‐health, e‐education and e‐traffic. ICTs, quality of life, health, employment. Huawei (2014)