The Theory of Mass Service Systems: A Training Manual by E. In. Solnyshkina is a unique and in-depth analysis of one of the most important areas of applied mathematics and management - the theory of mass service systems (SMO). This is a training manual, created within the framework of the Federal State Budgetary Educational Institution of Higher Professional Education "Komsomolsk-on-Amur State Technical University" , Become an indispensable assistant for students , Graduates and Professionals , optimization of service processes in various fields . From the very beginning, the author immerses the reader in a world where the interaction between customers and service systems becomes a key factor for success. The book explores the basic concepts, models, and techniques to effectively manage customer flows and resources. The reader will learn how to properly analyze and design systems to minimize latency, improve service quality, and optimize costs. One of the main topics raised in the book is the importance of mathematical modeling in the service sector. The author shares with readers not only theoretical foundations, but also practical examples, which makes the material accessible and understandable. This manual will be of interest not only to students of technical specialties, but also to managers working in the field of services, logistics and production, as well as to everyone who seeks to increase the efficiency of their work. The book is written in an accessible and understandable style, which makes it easy to assimilate complex mathematical concepts. and . In. Solnyshkin uses many illustrations, graphs and examples from real practice, which makes the material more visual and fascinating. Readers interested in topics such as quality management, process optimization, and operations research will find this guide a wealth of useful information. As for the author's style, and. In. Solnyshkin is known for his ability to explain complex things in simple language. His previous work has also focused on management and optimization issues, and each of them is distinguished by an in-depth analysis and practical approach. Readers familiar with his other works will appreciate the consistency and consistency of the presentation, as well as the rich experience that the author brings to each page. The book “The Theory of Mass Service Systems” will be an excellent addition to the library of both students and practitioners. It will help not only in studies, but also in professional activities, opening up new horizons in understanding the processes of service. If you are looking for literature on optimization, flow management or probability theory, this guide will be a real find for you. It will not only expand your knowledge, but also give you the opportunity to put it into practice, which is especially valuable in today's market, where quality of service is becoming a competitive advantage. Don’t miss the chance to delve deeper into the world of mass service systems theory with I. In. The Sun . This book is your reliable guide to the complex but fascinating world of managing and optimizing processes.