This book constitutes the proceedings of the 9th International Conference on Digital Economy, ICDEc 2024, held in Rabat, Morocco, during May 9-11, 2024.  The 43 full papers were carefully reviewed and selected from 117 submissions. They were categorized under the topical sections as follows: Part I: Digital Transformation, Digital Economy and Investment, Artificial Intelligence and E-learning, E-commerce and Social Media Marketing, Exploring the Nexus of Digital and Sustainable Economies in Developing States and Digital Business Models. Part II: Application of Machine Learning for Business, Digital Technologies and Innovative Management, Social Networks and Information Technologies, Digital Economy in Emerging Countries Mobile Banking and Digital Assets, Online Session.