The National Science Foundation’s strategy for 21st Century innovation depends upon rapid creation of software to enable scientific discovery. The NSF workshop report Planning for Cyberinfrastructure Support stated, “CI [Cyberinfrastructure] changes the rules and foundations of the research endeavor across much of NSF. CI software is a new class of artifact that should be the target of explicit design, construction, study, and evolution.” In 2009, Indiana University hosted an NSF-funded workshop on Cyberinfrastructure Software Sustainability and Reusability, and this forum will present key points of the conclusions and recommendations reached as a result of this workshop.