What happens when three developers tackle the same legacy codebase with the help of the same AI coding agent – Claude Code – and take three completely different paths? In this Embedded Computing Design article, ICS CEO Peter Winston delivers a rare behind-the-scenes look at this intriguing experiment to modernize a dated Motif system in just two weeks. From automated refactoring to compatibility layers to AI-generated tooling, the results were surprising, impressive – and deeply revealing. This article dives into the real-world wins and challenges of using AI in software modernization, and what it teaches us about the evolving role of human engineering judgment.