This book explores the fundamental principles of information technologies used in automating experiments and developing decision support systems. It highlights the unique features of applying information technologies in the creation of electronic educational resources and presentation materials. Additionally, it addresses how to organize effective information retrieval within automated information systems. Designed for university students studying in programs such as 230400 "Information Systems and Technologies" and 230100 "Informatics and Computer Engineering" across all modes of study, the book is particularly useful for those learning about the role of information technologies in engineering, scientific, and educational activities. It may also benefit master's students, doctoral candidates, and educators seeking to deepen their understanding of modern computer technologies.