Economic substance of infrastructure and its key features in construction

The article reveals the concept of infrastructure in light of different theoretical approaches, distinguishing its content and key features in order to determine the place of infrastructure in scientific theory and business activity. It is suggested to define infrastructure in two aspects: as economic category and as economic system. The above allows structuring existing definitions of infrastructure and justifying requirements to its functioning mechanism. Key features of infrastructure in construction are provided that allows suggesting author’s definition of infrastructure in construction as economic category and as economic system