This book constitutes the refereed proceedings of the 20th International Conference on Information and Software Technologies, ICIST 2014, held in Druskininkai, Lithuania, in October 2014. The 34 papers presented were carefully reviewed and selected from 68 submissions. The papers are organized in topical sections such as information systems; business intelligence for information and software systems; software engineering; information technology applications.

This book constitutes the refereed proceedings of the 21th International Conference on Information and Software Technologies, ICIST 2015, held in Druskininkai, Lithuania, in October 2015.
The 51 papers presented were carefully reviewed and selected from 125 submissions. The papers are organized in topical sections on information systems; business intelligence for information and software systems; software engineering; information technology applications.

This book constitutes the refereed proceedings of the 22nd International Conference on Information and Software Technologies, ICIST 2016, held in Druskininkai, Lithuania, in October 2016.
The 61 papers presented were carefully reviewed and selected from 158 submissions. The papers are organized in topical sections on information systems; business intelligence for information and software systems; software engineering; information technology applications.