This book constitutes the refereed proceedings of the 9th International Conference on Edge Computing held as Part of the Services Conference Federation SCF 2025, Hong Kong, during September 27–30, 2025.The 7 full papers included in this book were carefully reviewed and selected from 12 submissions. EDGE 2025 aims to become a prime international forum for both researchers and industry practitioners to exchange the latest fundamental advances in the state-of-the-art practice of Edge computing, identify emerging research topics, and define the future of Edge computing.