This book constitutes the refereed proceedings of the 25th International Conference on Information and Software Technologies, ICIST 2019, held in Vilnius, Lithuania, in October 2019.

The 46 papers presented were carefully reviewed and selected from 121 submissions. business intelligence for information and software systems;

Information Systems: Special Session on Innovative Applications for Knowledge Transfer Support.- Business Intelligence for Information and Software Systems: Special Session on Intelligent Methods for Data Analysis and Computer-Aided Software Engineering.- Information Technology Applications: Special Session on Information Technology Security.- Software Engineering: Special Session on Software and Model Metrics and Measurements.- Information Technology Applications: Special Session on Language Technologies.- Information Technology Applications: Special Session on Smart e-Learning Technologies and Applications.- Software Engineering: Special Session on Intelligent Systems and Software Engineering Advances.- Information Systems: Special Session on e-Health Information Systems.- Information Systems: Special Session on Digital Transformation.

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