This document discusses how Infosys helped modernize various clients' mainframe systems through automation, application redesign, and streamlining of processes. Some key outcomes included issuing cards faster and flagging fraud instantly for a financial institution, optimizing performance and helping launch new products and services worth $160 million for a British financial company, and improving auto-adjudication rates to 85% and saving $2 million for a healthcare giant. Overall, the case studies demonstrated benefits such as reduced costs, improved productivity, faster transactions and launches of new offerings through Infosys' fourth wave modernization services.