Basic Data Engineering Book. All aspects of the design and operation of various data architectures are considered, as well as the full life cycle of working with data: preparation, absorption, transformation, cleaning, combination, orchestration, pipelining. Particular attention is paid to cloud technologies, load balancing and secure data storage. The methods of generating requests, working with databases and tracking data flows are analyzed. The book provides a comprehensive understanding of the design of systems for processing heterogeneous data, maintaining these systems in an orderly and accessible form, and the trends in the development of the modern data industry.