The book "Modeling Systems" by B. G. Lisienko is a fascinating and in-depth study that immerses the reader in the world of system analysis and modeling. This work will become an indispensable assistant for students, graduate students, researchers and practitioners in the field of information technology, engineering, economics and other related disciplines . If you are interested in how to create and analyze models of complex systems, then this book is for you. In "System Modeling" Lisienko offers the reader a unique approach to understanding and developing models that can be applied in various fields - from business process management to technical systems design. The author not only outlines the theory, but also shares practical examples, which makes the material accessible and understandable even for those who are just starting their way in this field. The book covers a wide range of topics, including modeling methods and tools, systems analysis, and optimization and decision-making. One of the key topics addressed in the book is the interaction of the various components of the system and their impact on the overall result. Lisienko focuses on how important it is to consider all aspects of the system when modeling it in order to avoid mistakes and misunderstandings in the future. This idea is especially relevant in today's world, where complex systems are becoming more common - whether in business, science or technology. The book will be interesting not only to specialists, but also to those who want to expand their horizons and understand how the world around us works. Students studying computer science, mathematics, economics and other sciences will find in it useful tips and recommendations that will help them in their studies and future careers. Practitioners will be able to use the acquired knowledge to improve the efficiency of their work and make more informed decisions Lysienko's style is distinguished by clarity and logical presentation. It skillfully combines theoretical aspects with practical examples, which allows the reader not only to understand, but also to apply the knowledge gained in practice. In. G. Lisienko is the author of many works in the field of system analysis and modeling, and his experience and knowledge make this book especially valuable. Among his other well-known works are “System Analysis and Design” and “Optimization Methods”, which also deserve attention. “System modeling” is not just a textbook, but a real find for everyone who seeks to understand the complex processes and systems surrounding us. The book raises important topics such as systems thinking, risk management, and decision-making under uncertainty. It will help the reader develop critical thinking and learn to see the relationships between the various elements of the system. If you are looking for a book that will not only expand your knowledge, but also inspire new ideas and projects, Modeling Systems G. Lisienko will be a great choice . Do not miss the opportunity to immerse yourself in the world of system analysis and discover new horizons in the understanding of complex processes. This book is your reliable companion on the way to professional growth and personal development.