Product and process innovations based on digital technologies are actively put into practice by companies throughout the world. Digital transformation projects are inextricably connected with deep social transformations occurring in all countries. Currently, the speed of digital changes is already high and continues to increase. Knowledge of business digitization is still in the process of its forming, and presently practice outruns theory. So in this context, it is needed to analyze and generalize the ongoing changes on the organizational level. Digital business transformation involves not only a set of methods and technologies but a rather innovated way of economic relations' building and business design. The main contribution of this paper is that it examines the patterns of digital transformation and mutual interaction of core components of enterprise architecture (technologies, processes, personnel, management, etc.). The obtained inferences we are planning to study in the subsequent empirical researches.