This book constitutes the proceedings of the 31st International Conference on Web Services – ICWS 2024, held as Part of the Services Conference Federation, SCF 2024, in Bangkok, Thailand, during November 16-19, 2024. The 9 full papers presented in this volume were carefully reviewed and selected from 16 submissions. The papers cover topics in the field of Web engineering innovations to scientific research for the whole services industry. Service delivery platforms have been expanded to mobile platforms, Internet of Things, cloud computing, and edge computing.