The book "Training manual on the course Cloud architecture of infocommunication systems" is an indispensable resource for students, teachers and specialists in the field of information technology . This work, created by a team of authors, is a deep immersion in the world of cloud technologies, which today become the basis for the development of many areas of business and science. Cloud architecture is not just a buzzword, it’s an entire ecosystem that changes the way we store, process, and transfer data. The manual addresses key aspects of cloud technologies, their architectural models and operating principles. The reader will be able to learn about different types of clouds, such as public, private and hybrid, as well as how they can be integrated into existing infocommunication systems. This knowledge will be useful both for future specialists and for those who already work in this field and want to deepen their knowledge. The book will be of interest to students of technical specialties, graduate students, as well as practitioners working in the field of IT and cloud technologies. If you are passionate about virtualization, data management and building effective information systems, this guide will become a real guide for you. It will also be useful for those who are interested in modern trends in the field of digital business transformation and want to understand how cloud solutions can improve the efficiency of companies. One of the key topics raised in the manual is the security of cloud systems. In the context of constant cyber threats and data leaks, information protection issues are becoming especially urgent. The authors detail security practices as well as the risks associated with the use of cloud technologies. This makes the book not only a theoretical guide, but also a practical guide that will help readers avoid common mistakes when implementing cloud solutions. The style of the authors is distinguished by clarity and accessibility of the presentation, which makes it easy to assimilate even the most complex concepts. They use many examples and practical tasks, which makes the learning process more interactive and exciting. In addition, the manual includes current research and statistics, which allows readers to be aware of the latest trends and developments in the field of cloud technologies. If you are looking for books on the topic of cloud technologies, you may also be interested in such works as “Cloud computing: principles and practices” by author Benjamin Kerney, as well as “Cloud solutions architecture” by Tom Benger . These books will help you expand your knowledge and deepen your understanding of the topic. Cloud Architecture of Infocommunication Systems is not just a textbook, but a whole world of opportunities for those who want to be at the forefront of technology. It inspires the study and application of cloud solutions, opening up new horizons in career and scientific activities. Do not miss the chance to become a part of this fascinating field by diving into the pages of this unique manual.