This book constitutes the revised selected papers of the 9th International Conference on Advances in Computing and Data Sciences, ICACDS 2025, held in Tallinn, Estonia, during August 28&29, 2025. The 24 full papers presented in this volume were carefully reviewed and selected from 178 submissions. These papers focus in areas such as artificial intelligence, machine learning, big data analytics, cloud computing, computer vision, natural language processing, and related domains.