Digital economy is a new direction in the world economy. Economically developed countries have made
significant progress in this direction, while others are advancing in this direction. Digitization of all sectors of the economy is the main condition for integration into the world community, gaining a place in the world market, economic development, and creating conveniences for the population. There have been four industrial revolutions in human history. Each revolution is related to the invention of innovative technologies of that time and its introduction to human activity. As a result, new sectors of the economy appeared, and the state's economic situation improved. At the heart of the fourth industrial revolution were smart factories. In such enterprises, production processes of any complexity can be implemented, minimizing the risk of downtime and ensuring the efficient creation of "smart" products. In this article, from the point of view of digitization of industrial companies, the relations between these sectors and the role of digital transformation in the development of industry, problems in this sector and ways to overcome them are studied.