ITU‐T's Technical Reports and Specifications 775 Key performance indicators related to the use of information and communication technology in smart sustainable cities Executive summary These Technical Specifications give general guidance to cities and provides for the definitions of key performance indicators (KPIs) related to the use of information and communication technology (ICT) in the context of Smart Sustainable Cities (SSCs). These Technical Specifications are expected to become an ITU‐T Recommendation and the focus will be on the application of the ICT. Other Technical Specifications, under development within the Focus Group on Smart Sustainable Cities (FG‐SSC), cover the definitions of KPIs related to the sustainability impacts of ICT and are expected to become another ITU‐T Recommendation. Keywords Information and Communication Technologies (ICTs), Smart Sustainable Cities (SSC), Sustainability Impacts, Cities Introduction According to the terms of reference (ToR) of the Focus Group on Smart Sustainable Cities (FG‐SSC), one of the objectives is to: Identify or develop a set of key performance indicators (KPIs) to assess how the use of ICTs has an impact on the environmental1 sustainability of cities. One of the specific tasks and deliverables of the FG‐SSC is to: – Develop a document of KPIs to assess the impact of the use of ICT projects in cities. This document is one of the deliverables developed by the FG‐SSC and defines the KPIs. The series of KPIs definitions deliverables include: Technical Specifications on overview of key performance indicators in smart sustainable cities [ITU‐T L.KPIs‐overview]. Technical Specifications on key performance indicators related to the use of information and communication technology in smart sustainable cities. This document lists the KPIs focusing on ICT use in SSC. Technical Specifications on key performance indicators related to the sustainability impacts of information and communication technology in smart sustainable cities [ITU‐T L.KPIs‐impact]. This document lists the KPIs proposed for ICT impact on sustainability. Technical Report on key performance indicators definitions for Smart Sustainable Cities [ITU‐T L.KPIs‐Supp]. This document provides the information regarding existing KPIs and evaluation index systems for smart cities, KPIs for sustainable cities, etc. In this document FG‐SSC proposes ICT related KPIs in alignment with the definition of SSC while considering the dimensions of such a city. This document is aligned with the framework provided by UN Habitat in its City Prosperity Index with respect to the categorization of indicators as described in Appendix II and further detailed in [ITU‐T L.KPIs‐overview]. ____________________ 1 The terms of reference of FG‐SSC particularly mention environmental sustainability. However, this document tries to have a broader perspective and embraces also indicators that are related to quality of life, social and economic aspects.