The article examines the field of information technology as a modern industry of the world economy. Information technology is an integral part of modern society and is especially relevant in the activities of everyone. Modern researches of theoretical and practical problems of development of the information technology industry are studied and analyzed. There is an interest of researchers in studying this issue. The place and role of the information technology industry in the world economy are determined. The peculiarities of the development of the IT industry in the modern economy of Ukraine are studied, the prospects of the industry are analyzed, the main problems are pointed out, possible ways out of the situation are suggested. The segmentation of the modern global market of information technologies with the detailed analysis of development of separate segments is resulted. The success of the whole sphere depends on the correct market segmentation. The article studies and presents the index of development of information and communication technologies as an indicator of the achievements of countries in this field. The methodology for calculating the index includes such parameters as the use of information and communication technologies, access to them, the practical application of technologies by the population of countries and so on. The index of development of information and communication technologies is defined as an important indicator of economic and social development of the state. The index is published regularly to track changes in dynamics. The study makes it possible to state that the development of information technology in the international market is in a state of dynamic evolution, and therefore requires further study.