This report examines how to promote sustainable infrastructure investment. It discusses data needs for infrastructure investment and the current environment, social and governance (ESG) approaches before offering policy recommendations to help ensure that investors are better equipped to make investment decisions related to infrastructure assets. The report explores legal and regulatory barriers to quality infrastructure investment, and considers how governments can help infrastructure actors promote quality infrastructure projects, ensure project objectives and reporting correspond with investor expectations, and how to mobilise funding and financing for inclusive and quality infrastructure investment in both regions and cities.