SUSTAINABLE DEVELOPMENT OF THE SERVICE SECTOR: THEORETICAL-METHODOLOGICAL APPROACH
The services sector is one of the leading sectors of the economy. Today the share of this sector in the gross domestic product and employment is more than 70% in world economy. The service sector began to be studied in the 20th century as a separate discipline and field. Therefore, the theoretical and methodological foundations of this area are not yet perfect. In particular, most of the research in the field of services to date has focused on the socio-economic aspects of it. The purpose of this study is to improve the theoretical and methodological foundations of not only socio-economic but also ecological development of the services sector, in other words, sustainable development. Particular attention is paid to the creation of functions for sustainable development of the services sector and the development of an improved methodology for determining the level of sustainable development of the service sector.