ITU‐T's Technical Reports and Specifications 341 Setting the framework for an ICT architecture of a smart sustainable city Executive Summary These Technical Specifications describe the ICT architecture development framework of Smart Sustainable Cities and concludes on corresponding architecture views and guides. These Technical Specifications are expected to become an ITU‐T Recommendation. Keywords Architecture, ICT Architecture, ICT Architecture Framework, Information Communication Technologies (ICT), Smart Sustainable Cities (SSC) Introduction According to the Terms of Reference (ToR) of the Focus Group on Smart Sustainable Cities (FG‐SSC), one of the objectives is to: Suggest future ITU‐T study items and related actions within the scope of the ITU‐T SG5 for example on: Concepts, coverage, vision and use cases of smart and sustainable cities. Characteristics and requirements of smart and sustainable cities. Efficient services and network infrastructure of smart and sustainable cities, as well as its architectural framework from the environmental impact point of view. In this document an architectural framework of SSC is proposed.