The book "Theory of System Analysis and Decision Making", written by a team of authors, is a deep immersion in the world of system analysis, which has become an integral part of modern management and decision-making in various fields of activity. This publication will be especially interesting to those who seek to understand how to effectively solve complex problems using a systematic approach. In today's world, where information is becoming the main resource, the ability to analyze data and make informed decisions is becoming critical. The book covers a wide range of topics, ranging from the basics of system analysis to practical methods that help in decision-making. The authors share their knowledge and experience, considering various models and methods that allow analyzing complex systems and finding optimal solutions in conditions of uncertainty. This book will be useful to undergraduate and graduate students studying management, economics, sociology and other disciplines where an analytical approach is required. It will also attract the attention of practitioners, managers and executives who are looking for new tools to improve their performance. If you are interested in process optimization, strategic planning or data analysis, the Theory of System Analysis and Decision Making will be a real find for you. The topics raised in the book cover a wide range of issues, including modeling techniques, risk analysis, process optimization, and decision-making under uncertainty. The authors emphasize the importance of systems thinking in the modern world, where many problems require an integrated approach. The book emphasizes that in order to successfully solve problems, it is necessary to take into account not only individual elements of the system, but also their interaction and interdependence. The style of the authors is clear and accessible, which allows the reader to easily assimilate even the most complex concepts. They use many examples from real practice, which makes the material more clear and understandable. This publication is not only informative, but also fascinating, which allows the reader not only to learn, but also to enjoy the process. The Theory of Systems Analysis and Decision Making will be an excellent addition to the library of anyone who seeks to develop their analytical skills and deepen their understanding of decision-making processes. If you are interested in such works as “System Analysis and Management” or “Decision Making in Uncertainty”, then this book will be a logical continuation and expansion of your knowledge for you. Do not miss the opportunity to immerse yourself in the world of system analysis and discover new horizons in decision-making. This book is not just a tutorial, but a real guide to the complex but fascinating world of analysis and management. You will be able not only to improve your skills, but also to apply the knowledge gained in practice, which will make you more effective and successful in your professional activities.