The monograph examines the most important aspects of the development of application software systems for corporations - large distributed industrial structures united by common business goals. A special feature of the approach is the study of the entire complex of architectural levels necessary to build such systems, from life cycle models and methodologies for their implementation to technological platforms and tools. A number of examples are given to illustrate the features of the use of modern technologies (primarily developed by Microsoft Corporation) for the implementation and implementation of large-scale software systems in various sectors of the national economy. For students, graduate students and researchers, as well as practitioners whose area of interest is related to the development large-scale software systems.