Web Engineering : 23rd international conference ICWE 2023 Alicante Spain June 6 9 2023 : proceedings This book constitutes the refereed proceedings of the 23rd International Conference on Web Engineering ICWE 2023 held in Alicante Spain during June 6 9 2023. The 18 revised full papers and 7 short papers presented in this book were carefully reviewed and selected from 77 submissions. They are organized in topical sections named: architecting the web in the cloud continuum; machine learning for web engineering; IoT and WoT engineering; user privacy engineering; user behaviour characterization; user centered technologies; tools and techniques for advanced web engineering; and web engineering practices and experiences