IfS Mission & Goals The purpose of IFS is to serve the needs of and influence the efforts of professionals, academes, industries, and governmental bodies that contribute to the advancement of sustainability and sustainable development. Learn about IfS goals. IfS Leadership See members of IFS Managing Board. By-Laws Of The Institute For Sustainability Of The American Institute Of Chemical Engineers The IfS By-Laws were created in 2004 and latest update was done in June 2010. See all sections related to purpose and objectives and relationship to AIChE. IfS Press Releases See the latest announcements related to the Institute for Sustainability and its conferences.