Why Shopify rewrote its codebase for AI readability

Shopify's engineering teams found that code patterns optimized for human cognition—clear variable names, explicit function contracts, modular structure—are exactly what makes AI agents effective at autonomous code generation and debugging. Building for machine intelligence solved years of technical debt and engineer productivity problems that humans had struggled with. Companies that optimize infrastructure for AI-native workflows may gain competitive advantages in developer velocity and code quality that stem from better fundamentals, not from the AI component itself.