The book "System Analysis" edited by Elena Zakalkina is a unique work that immerses the reader in the world of complex systems and methods of their analysis. This work is a collective work that collects the knowledge and experience of many specialists in the field of system analysis, which makes it an indispensable resource for both students and practitioners. Systems analysis is not just a set of tools, but a whole philosophy that allows you to better understand how complex systems function in various fields: from economics to ecology, from information technology to social sciences. The book covers a wide range of topics, ranging from the basics of system thinking to modern methods of modeling and optimization. Readers will be able to learn about how systems analysis helps in making decisions, identifying problems and finding effective solutions. This book will be of interest not only to students and graduate students of technical and economic specialties, but also to professionals working in the field of project management, business analysis and software development. If you are passionate about process optimization, risk management or want to learn how to apply a systematic approach to your work, System Analysis will be a real find for you. The topics raised in the book cover many aspects, such as systems thinking, data analysis techniques, modeling and simulation, and the evaluation of the effectiveness of decisions. These issues become especially relevant in a rapidly changing world, where the ability to adapt and find optimal solutions is crucial. The book also raises important questions about human-system interaction, how the human factor affects system performance, and how errors arising from misunderstandings can be minimized. The style of Elena Zakalkina and her team is clear and accessible, which allows readers to easily assimilate even the most complex concepts. The author is known for her work in systems analysis and management, and her experience makes this book a valuable source of knowledge. Her other well-known works are also devoted to management and analysis, and they have gained recognition both in academia and among practitioners. System Analysis is not just a textbook, but a practical guide that will help you develop critical thinking and learn how to apply a systematic approach to your professional activities. It will be a great addition to the library of anyone who is committed to self-improvement and wants to be one step ahead in their career. If you’re looking for books on systems analysis, project management, or business analysis, Zakalkina’s “System Analysis” is exactly what you need. This piece will inspire you to new ideas and help you look at familiar things from the other side. Do not miss the opportunity to expand your knowledge and skills - this book will become your reliable companion in the world of system analysis