ITU‐T's Technical Reports and Specifications 963 3 Standards related to key SSC issues1 3.1 SSC terminology standards It is essential to have a holistic vocabulary for the initiatives on smart sustainable cities. FG‐SSC now has reached agreement on the definition of SSC. However, more efforts are needed to stand‐ardize the terms and definitions covering all the aspects of SSC. Work area FG‐SSC deliverable(s) related to this work area SDO working on this area Document number released by this SDO Corresponding document title Standardization gap in this area Future needs and suggestions to SG5 Terms and defi‐nitions Agreed defi‐nition of SSC [ITU‐T TR SSC Def] None None None Need more terms and definitions cov‐ering all aspects of SSC To develop stand‐ards on terms and definitions 3.2 SSC services standards 3.2.1 E‐Government The services and applications of e‐government include but are not limited to: information sharing electronic document streaming data directory service data exchange service including: (a) office automation (b) real‐time information releasing (c) Transparency around governmental decision‐making and open data (d) electronic public‐opinion polling FG‐SSC has released a Technical Report on integrated management for SSC [ITU‐T TR manage‐ment] which explains the services and applications of e‐government in SSC. ISO/IEC has some fundamental standards about information technologies, including vocabulary, metadata registries, software product evaluation, security techniques‐evaluation criteria for IT se‐curity, open systems interconnection‐security frameworks for open systems, security techniques‐digital signatures with appendix, security techniques‐entity authentication, security techniques‐non‐repudiation, open systems interconnection‐systems management. However, the standards specific to the above services and applications of e‐government are still not available. It is suggested to develop guidelines for the services and applications of e‐government for SSC at first, then consider the development of a series of standards including the terms and definitions, service model, information management, and security etc. 1 This Technical Report adopts the classification of standards proposed in [ITU‐T TR roadmap].