This book constitutes the refereed proceedings of the 30th International Conference on Information and Software Technologies, ICIST 2024, held in Kaunas, Lithuania, during October 17-18, 2024. The 25 full papers included in this book were carefully reviewed and selected from 75 submissions. They were organized in topical sections as follows: Intelligent Systems and Software Engineering Advance; Cyber Security; Intelligent Methods for Data Analysis and Computer-Aided Software Engineering; and Smart e-Learning Technologies and Applications.