Biographical Sketch: Gary Mazo is a Senior Software Engineer with IBM Systems. Gary joined IBM in 1987 and has held various roles in creating tools for Enterprise software development. Since January 2015, Gary co-leads overall architecture of Rational Developer for System z. Prior to that, he lead development of cloud-based tools for Mainframe software and was in charge of Enterprise Service tools in RDz. Gary holds 7 software patents and has authored articles and blogs on topics of software development and Enterprise modernization.