Acknowledgements This Technical Report was researched and written by Paolo Gemma (Huawei), Ziqin Sang (Fiberhome Technologies Group), Amanda McIntosh (Carlo‐Schmid Programme) and Angelica V Ospina (University of Manchester) as a contribution to ITU‐T Focus Group on Smart Sustainable Cities (FG‐SSC) and ITU‐T Focus Group on Smart Water Management (FG‐SWM). The authors would like to thank ISO/TMB Smart Cities AG for their valuable comments and contributions. Additional information and materials relating to this report can be found at: www.itu.int/itu‐t/climatechange. If you would like to provide any additional information, please contact Cristina Bueti at tsbsg5@itu.int.