TL;DR. Headless commerce gives you frontend control and edge performance at the cost of operational complexity and engineering time. Hosted SaaS trades flexibility for speed-to-launch and managed infrastructure. The 2026 sweet spot for most merchants is a hosted platform that delivers headless-grade performance natively (Cache Components + PPR), eliminating the choice.
What "headless commerce" actually means
Headless commerce decouples the commerce backend (catalog, orders, inventory) from the storefront frontend. The frontend is a separate codebase, typically React/Next.js or Astro, that consumes the commerce backend via a GraphQL or REST API.
Famous examples:
- Shopify Hydrogen: Shopify's headless framework, hosted on Oxygen.
- BigCommerce + Next.js Commerce: BC's Storefront API consumed by a Next.js frontend.
- commercetools + custom Next.js: full composable commerce architecture.
- Magento PWA Studio: Magento's headless PWA solution.
Hosted (or "monolithic") commerce keeps frontend and backend in one platform. Stock Shopify themes, BigCommerce Stencil themes, WooCommerce default themes, and Squarespace Commerce are hosted.
What headless solves
Three real problems:
- Frontend customization beyond what a theme allows. Brands with distinctive UX requirements (custom configurators, AR product views, complex bundle builders) often hit theme limits.