Infrastructure investment, if well channelled, has a huge positive multiplier effect on an economy. During the G7 meeting in June 2021 in Cornwall, the US President reiterated the importance of infrastructure investment in stimulating economic growth.

Many reference guides, including the APMG PPP Certification Guide describe Public-Private Partnership (PPP) as a long-term contract between a public and a private party for the development or significant upgrade of a public asset and/or potential management and operation of public service.