This article analyzes digitalization as a factor of development of world economy. It has been established that conversion to the model of digital economy is accompanied by new qualitative modifications of social and economic relations both at the governmental level and at the level of business entities. This process is characterized by new capabilities and hazards. It has been revealed that the fraction of internet economy increases in gross domestic product, though, the digital transformation will deal with all sectors of most countries of the world. At the same time, in order to estimate the efficiency of digital economy, it is necessary to have common and unique procedures, which are currently unavailable. Therefore, the development strategy of digital economy cannot be established just to verify the new concept.