How AI drove Shopify back to clean code

Shopify is launching a new storefront theme with simpler, more readable HTML and Liquid code, replacing its JSON-heavy Horizon theme. The redesign, driven by AI advancements, aims to improve developer experience and align with AI agents' preferences for explicit, token-efficient code. The new theme reduces code lines by 93% and integrates with Shopify's AI assistant, Sidekick, used by 20% of merchants.