The book "Models and methods of system analysis: decision-making and optimization" by A. C. Rykova is a true guide to the complex but fascinating world of system analysis. This tutorial is intended for undergraduate, graduate, and professional students seeking to deepen their knowledge in decision making and optimization. If you are interested in issues related to data analysis, mathematical modeling or project management, then this publication will become an indispensable source of information and practical recommendations for you. In the book, Rykov masterfully combines theoretical foundations and practical aspects of system analysis. It immerses the reader in the world of models that help to make informed decisions in conditions of uncertainty. The author considers various approaches to optimization, which makes the material accessible and understandable to a wide audience. Each chapter is filled with examples that illustrate the application of theoretical concepts in practice, which allows the reader not only to assimilate information, but also to apply it in real situations. One of the key themes of the book is the decision-making process. Rykov analyzes in detail how various methods of system analysis can help in this process, as well as what factors should be taken into account when choosing the optimal solution. In today's world, where information is becoming more complex and voluminous, the ability to correctly interpret data and draw conclusions becomes an important skill. The book offers readers the tools and techniques to help develop this skill. Who can like this manual? First of all, it will be useful for students of technical and economic specialties who study disciplines related to management, mathematics and computer science . The book will also be of interest to graduate students and practitioners working in the fields of data analysis, project management and business analysis. If you are looking to improve your decision-making and process optimization skills, this guide will be a great helper. The topics raised in the book cover a wide range of topics, including game theory, multi-criteria analysis techniques, and the various models used to optimize. Rykov not only explains the theoretical aspects, but also shares practical advice, which makes his work especially valuable. The book also includes a variety of exercises and tasks that will help the reader consolidate the knowledge and skills they have acquired. The author's style is clear and accessible. A. C. Rykov is able to explain complex concepts in simple language, which makes his books attractive to a wide audience. He is also the author of other well-known works, such as System Analysis in Management and Optimization Methods in Economics, which also deserve attention. These books complement each other and allow a deeper understanding of the subject. In conclusion, “Models and methods of system analysis: decision-making and optimization” is not just a textbook, but a full-fledged resource for anyone who wants to master the art of system analysis and learn to make informed decisions. If you are looking for a book that will help you understand the complex issues of data optimization and analysis, then this publication will become your reliable companion along the way. Do not miss the opportunity to immerse yourself in the world of system analysis with A. C. Rykov and discover new horizons in decision-making and process optimization.