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The purpose of the article is to consider the practical aspects of the structural transformation of economy. Over the past few decades, absolutely all national economies have undergone structural changes, regardless of their size, economic system and all other political or economic differences. The transformation of structures was associated with many factors, including institutional changes, technological changes, the widespread introduction of the results of scientific and technological progress, globalization and integration processes. At the same time, it should be noted that not all structural changes had a positive effect for all countries, even though the changes had almost the same trend of growth in the share of the service sector, a decrease in the share of agriculture and manufacturing. This article is an attempt to systematize the main trends and consequences of structural transformations in the world. The authors put forward the hypothesis that the world economy tends to “servicization” and deindustrialization, which has dialectical significance for the world economy. To assess the structural changes, we analyzed the data of the World Bank to study the dynamics of changes in the sectoral structure of the countries of the world in the period from 1990 to 2019. A very great influence on these processes was exerted by globalization, which through its mechanisms made possible a rapid change in industry proportions not only in the developed world, but also in developing countries, while forming a global trend of “servicization” of the economy. The authors tried to conduct a comparative analysis of the impact of each economic sector on GDP using a regression model based on panel data from more than 180 countries of the world presented by the World Bank.