John Williams, RLA is CEO of Impact Infrastructure, Inc., a Software as a Service Company and provider of infrastructure and building performance data including financial/economic, social and environmental returns on investment. He is the originator of the Sustainable Return On Investment (SROI) framework; multiple business case evaluation tools; and Autocase, an automated Cost-Benefit/LCCA/SROI Analysis tool. He is on faculty at Columbia University, is Chairman Elect for the Institute for Sustainable Infrastructure (ISI) and serves on Ceres' Presidents Council. Mr. Williams is a Landscape Architect with 38 years of experience and an ASLA Certificate of Honor winner.