The formation and development of the economic system of society on a macro scale is more and more exposed to the technocratic thinking of a person, which contributes to the emergence of periodic cyclical fluctuations of crisis phenomena that require optimization of management in order to ensure the stability and efficiency of the functioning of the entire macrosystem. The crisis phenomena that have developed in the past few years have especially adversely affected the service sector, which is an indicator of the well-being of society, creating products with an increased degree of elasticity (sensitivity) to changes in demand in the service market, the primary purpose of which is to ensure the growth of comfortable and safe human life and society. The article actualizes the considered problem of ensuring sustainable development at the macro level, the most vulnerable in the crisis in the economic sphere - the service sector. The author conducts a dynamic analysis of the share of value added in the service sector from GDP and its dynamics over several decades, determining volatility by the highest, average and highest values, and also considers the place of Russia in terms of this indicator in the classification of countries of the world community. The ongoing changes in the economies of world countries and Russia determine new types of transformations based on new knowledge, competencies and technologies at all levels of functioning of the macroenvironment and its elements. Based on the analysis of the development of the service sector in a crisis, the author proposes a mechanism that increases the sustainability of the service sector in the ecosystem of the global economy.