Jonathan Grupp, a software engineer at M-Way Solutions and a contributor to Ionic, concludes his three-part series on building robust Ionic apps with advanced workflows by exploring environments, CORS proxies, and build tools for app icons, splash screens, and app delivery. This installment focuses on managing different API endpoints using environment variables, handling CORS issues with built-in proxies, and automating build processes with Gulp tasks, including injecting variables from the command line. Grupp emphasizes using the Generator-M-Ionic to streamline development workflows and build versions for different environments, while also discussing the integration of Ionic Platform services for app delivery. The article reflects on the evolving landscape of app development with emerging technologies like Angular 2, Ionic 2, Typescript, and ES6, inviting feedback and ideas for future updates.