The book "Economic and mathematical modeling in business informatics [Electronic resource]: interactive . Multi. Manual: System D by O. A. Kuznetsova is a unique tool for anyone seeking a deeper understanding of the relationship between economics and mathematics in the context of modern business. This guide is not just a textbook, but an interactive resource that allows readers to immerse themselves in the world of business informatics, using modern technologies and multimedia elements. In this book, the author masterfully combines the theoretical foundations of economic and mathematical modeling with practical examples, which makes the material accessible and understandable to a wide audience. Kuznetsov appeals to readers who are interested not only in economics, but also in mathematics, as well as those who want to learn how to apply this knowledge in practice. This can be useful for both undergraduate and graduate students, as well as practitioners in the field of business and information technology. The book covers a wide range of topics, including mathematical modeling techniques, data analysis, and business process optimization. The reader will be able to learn how to create models that help make informed decisions in conditions of uncertainty, as well as how to use various tools to analyze and visualize data. This is especially true in the modern world, where information is becoming a key resource, and the ability to work with it is a necessary skill. One of the features of this manual is its interactive format. Kuznetsov uses multimedia elements that make the learning process more exciting and effective. Readers can not only read the text, but also interact with graphics, models and other visual materials, which contributes to better assimilation of information. This approach avoids the traditional "dry" presentation and makes the study of complex all the more accessible and interesting. The book will be especially useful for students of economic and technical specialties, as well as for specialists working in the field of data analysis and business analytics. It is suitable for those who want to improve their skills in mathematical modeling and learn how to apply them in real business situations. Also, the manual will be interesting to those who seek self-education and want to expand their knowledge in the field of business informatics. Kuznetsov's style is distinguished by clarity and accessibility, which allows even complex concepts to be understandable to a wide audience. His previous work also focuses on topics related to mathematical modeling and information technology, which confirms his expertise in this field. Kuznetsov is actively engaged in scientific activities and shares his knowledge through various publications and textbooks, which makes him one of the authoritative authors in the field of business informatics. In conclusion, “Economic and Mathematical Modeling in Business Informatics” is not just a book, but a whole world of opportunities for those who want to master the skills necessary for a successful career in modern business. It opens the door to new knowledge and tools that will help readers become more competitive in the labor market. If you are looking for a resource that combines theory and practice, and also offers an interactive approach to learning, this tutorial will be an indispensable assistant on your path to success.