In a Kongcast episode, Aaron Weikle, CEO of MS3, discusses strategies for supporting legacy applications as companies transition to microservices, emphasizing the importance of integration tools like Kong Gateway. Weikle highlights the challenges organizations face, such as maintaining outdated SOAP-based systems while integrating modern RESTful APIs and gRPC protocols. He introduces the "Mullet Pattern," which abstracts legacy systems behind modern APIs, minimizing disruptions during backend updates. MS3 leverages custom Kong plugins to facilitate this transition, allowing seamless SOAP to modern service conversions and enhancing data validation and fault handling. Weikle also elaborates on using DataSonnet for efficient data transformations, addressing performance issues in mobile applications by offloading processing to backend systems. This approach helps organizations manage technical debt and modernize their infrastructure without disrupting existing consumer operations.