The book "Compilers: principles, technologies and tools" by Aho A. , Lam M. , Networks R. and Ullman D. is an outstanding work that has become a reference book for students, teachers, and computer science professionals. This work, first published in 1986, has remained relevant and in demand for decades, and its influence on the development of compiler theory is difficult to overestimate. The book focuses on the basic principles and technologies that underlie the creation of compilers - programs that translate code written in one programming language to another, usually lower-level. The authors elaborate on key aspects such as lexical analysis, syntactic analysis, semantic analysis, optimization, and code generation. Each chapter of the book is permeated with deep theoretical knowledge, supported by practical examples and tasks, which makes the material accessible for understanding and application. The book will be of interest not only to undergraduate and graduate students studying computer science, but also to practicing programmers who want to deepen their knowledge of the internal structure of programming languages and their compilers. If you are passionate about programming, developing languages or just want to understand how your favorite language works, this book will become an indispensable resource for you. Topics raised in "Compilers" cover a wide range of issues, such as the structure of programming languages, code optimization techniques, and modern approaches to compiler development. The authors not only explain the theoretical foundations, but also share practical tips that will help the reader to apply the knowledge gained in practice. For example, they discuss how to use various tools and technologies to create efficient compilers, making the book particularly valuable for developers. The style of the authors is distinguished by clarity and logical presentation, which allows the reader to easily assimilate complex concepts. Each section is accompanied by illustrations and examples, which makes the learning process more visual and fascinating. Aho, Lam, Seti and Ullman are known for their ability to explain difficult things in simple language, and this quality is especially evident in their joint work. In addition, "Compilers" is not only a textbook, but also a real reference book that can be used throughout a career. Many programmers and language developers return to this book again and again to refresh their knowledge or find answers to specific questions. If you are looking for literature on topics related to programming languages, software development or algorithm theory, you can also pay attention to works such as "Algorithms: Corman, Leiserson, Rivest and Stein's "The Art of Programming" by Donald Knuth These books, like Compilers, are classics in their field and will help you deepen your knowledge. In conclusion, “Compilers: Principles, Technologies and Tools” is not just a book, but a whole era in the study of programming and development of compilers. It deserves the attention of anyone who wants to understand how programming languages work and how to create effective compilers. Do not miss the opportunity to immerse yourself in the world of theory and practice that this outstanding work opens up for you.