Headless commerce is a modern approach to building eCommerce websites where the front end (user interface) is separated from the back end (where your product data, customer info, and business logic live). This separation allows developers to use modern frameworks like React, Next.js, or Shopify Hydrogen to build faster, more flexible, and personalized storefronts.

Instead of relying on a traditional theme system, headless stores fetch and display content via APIs (like GraphQL or REST), giving you complete control over the user experience while still leveraging powerful back-end platforms like Shopify, Magento, or BigCommerce.