This article researches the ways of improvement of the efficiency of investment policy in the service sector, formation of investment funds in the service sector, investment methods and tools for the development of the service sector on the basis of public-private partnerships, the network structure of business entities in the service sector within the framework of the state investment strategy, mechanisms for determining their effectiveness, ways to ensure the participation of the private sector in the management and financing of socially significant strategic projects, some restrictions on the implementation of the public-private partnership mechanism, criteria for systemic identification and classification of public risks, as well as effective ways to implement the public-private partnership mechanism.