This article demonstrates how the impact investing industry has made major strides in improving how impact investors measure and manage their social and environmental impact. The piece provides examples of impact measurement and management (IMM) tools and frameworks that investors use to measure impact, such as the GIIN’s IRIS Metrics, the SDGs, and the Impact Management Project. The piece also quotes the GIIN’s Kelly McCarthy about IMM practice and references several key findings from the GIIN’s The State of Impact Measurement and Management Practice report.