Engineering software for modern challenges : First International Conference ESMoC 2021 Johor Malaysia October 20 21 2021 revised selected papers This volume constitutes selected papers presented at the First International Conference on Engineering Software for Modern Challenges ESMoC 2021 held in Johor Malaysia in October 20 21 2021.The 17 papers presented were thoroughly reviewed and selected from the 167 submissions. They are organized in the topical sections on software engineering; intelligent systems; software quality