Ontologies and Thesauruses: Models, Tools, Applications by Dobrova B. In. , Ivanova V. In. , Lukashevich N. In. and Solovyov V. D. is a deep and comprehensive research in the field of information technology, which will be of interest to both specialists and those who are just beginning to get acquainted with this topic. This publication will be an indispensable tool for students, graduate students, researchers and practitioners working in the field of semantic technologies, knowledge management and information search. The book examines the key aspects of creating and using ontologies and thesauruses that play an important role in organizing and presenting knowledge. The authors explain in detail what ontologies are, how they help to structure information and how they can be applied in various fields, from artificial intelligence to library business. Unlike traditional classification approaches, ontologies offer more flexible and powerful tools for handling data, making them particularly relevant in an era of big data and information overload. One of the main themes of the book is the difference between ontologies and thesauruses, as well as their complementarity. Thesauruses tend to be simpler structures that help organize terms and their relationships, while ontologies offer more complex models that are able to describe not only terms but also their properties and relationships. The authors give many examples and practical applications, which allows readers to better understand how these concepts can be used in practice. The book will be useful not only to those who work in the field of information technology, but also to specialists in such areas as library work, archival studies, lexicography and even in the humanities. It will become a valuable resource for teachers and students interested in modern methods of knowledge and information management. Thanks to an accessible language and a clear presentation of the material, even beginners will be able to easily learn the basic principles and methods of working with ontologies and thesauruses. The style of the authors is clear and logical, which makes reading a book fascinating and informative. They use a variety of illustrations and diagrams that help visualize complex concepts and make the material more accessible. In addition, the book discusses modern tools and technologies that can be used to develop and implement ontologies, making it relevant for practitioners. The book “Ontologies and Thesauruses: Models, Tools, Applications” not only enriches the reader with knowledge, but also inspires new ideas and approaches in working with information. It raises important topics such as the semantic web, knowledge management, and the role of ontologies in process automation, making it particularly valuable in today's world, where information is becoming a key resource. If you are looking for literature that will help you understand the complex issues of knowledge and information management, this book will be an excellent choice. It will not only expand your horizons, but also provide practical tools to work in this dynamic field. Do not miss the opportunity to get acquainted with this important work, which will certainly take a worthy place in your library.