IET Software publishes papers on all aspects of the software lifecycle, including design, development, implementation and maintenance. The focus of the journal is on the methods used to develop and maintain software, and their practical application.Authors are especially encouraged to submit papers on the following topics, although papers on all aspects of software engineering are welcome:Software and systems requirements engineeringFormal methods, design methods, practice and experienceSoftware architecture, aspect and object orientation, reuse and re-engineeringTesting, verification and validation techniquesSoftware dependability and measurementHuman systems engineering and human-computer interactionKnowledge engineering; expert and knowledge-based systems, intelligent agentsInformation systems engineeringApplication of software engineering in industry and commerceSoftware engineering technology transferManagement of software developmentTheoretical aspects of software developmentMachine learningBig data and big codeCloud computingCurrent Special Issue. Call for papers: Knowledge Discovery for Software Development - https://digital-library.theiet.org/files/IET_SEN_CFP_KDSD.pdfBig Data Analytics for Sustainable Software Development - https://digital-library.theiet.org/files/IET_SEN_CFP_BDASSD.pdf