The purpose of the book is to introduce readers to existing approaches and solutions in the field of modeling business architecture of the enterprise . The book covers various aspects of this issue, including such issues as basic approaches to modeling and the possibilities of modern tools. Particular attention is paid to the specifics of the organization of projects for the development of business architecture models . Based on the practical experience of implementing projects on modeling business processes in various subject areas, typical risks, errors and misconceptions of the main participants are analyzed and summarized, recommendations for their prevention are given. Private approaches and solutions are illustrated, for example, modeling business processes in the ARIS environment . Taking into account the current trends in the development of technology and business management, promising areas of practical use of methodology and instrumental modeling of business processes have been formulated .