The article investigates the reasons, factors and processes of formation of the modern political economy. The authors analyze the nature and direction of change in the paradigm of studying the complex and super-complex socio-economic processes in conditions of the transformation in technological mode of production, complicated interdependence of individual areas and subsystems of the meta-system. They consider some internal substantial factors of saving key features of architectonics in the subject of classical political economy in the updated subject of political economy of modern society.

Keywords:speeding-up; static and dynamic systems; static and dynamic approaches; mainstream; neoliberalism; centripetal integration processes; innovatization of the economy; transformation of institutional forms; functional-and-factorial analysis; philosophic

The article substantiates the necessity, possibility and expediency of the formation of concrete institutionalized directions in the subject field of contemporary political economy and, in particular, its direction as political economy of postindustrial society. The works of some modern theorists who consider the political economy of post-industrial society as a \"service political economy\" are critically analyzed, since, in their opinion, the sector of services is the dominant sector of the modern economy.
It has been proved that \"service political economy\" can not a priori cover the whole range of relations, contradictions, tendencies and variants of the development of institutional forms of economy and society in the conditions of the informational method of production that is born on the planet on the basis of a scientific revolution and, therefore, can not be identified with the political economy of post-industrial society. In this context, the field of the subject of political economy of post-industrial society is outlined, the idea is proposed and grounded, according to which the political economy of post-industrial society and contemporary political economy are close in their orientation to the institutional forms of political economy in its development, whose subject field is enriched in conditions of complication of the nature of interrelationships and interdependencies between individual elements and sectors of the architecture of globalized economy and globalized society.
Their subject field is enriched in the context of complexity of the nature of the interconnections and interdependencies between the individual elements and sectors of the globalized economy and the architectonics of globalized society, primarily in such areas as substantivist, institutional, constitutional or new political economy, political economy of a globalized society, political economy of the middle class, and political economy of post-capitalist society.
The article substantiates the position that only the unification of intellectual efforts of representatives of these directions can give a synergistic effect in understanding the laws of functioning and development of the modern economy and society. Also, it allows formulating the principles of an effective theoretical model of the state economic policy, aimed at solving urgent social and economic problems from the standpoint of ensuring the harmonization of the interests of all social groups and layers of the planet\'s population under the conditions of the fourth industrial revolution.

Keywords: political economy of the post-industrial society, contemporary political economy, \"service political economy\", digital economy, fourth industrial revolution, informational production mode, neoliber