Headless EC Site Built on Shopify

Shopify Storefront API as the backend, with a fully customized Next.js frontend

ShopifyStorefront APIHeadlessNext.jsGraphQL
3 min read

About This Project

If you run an EC site long enough, certain wishes keep coming back: "I want more freedom in the design" and "I want pages to load faster." Customizing a Shopify theme only gets you so far, yet rebuilding payments and inventory management from scratch is not realistic either.

Headless commerce answers both. Shopify keeps handling the "back side" — product data, inventory, and payments — while the website users actually see is built separately with Next.js (a framework that serves as the foundation for building websites). You keep the reliability of Shopify's backend and gain complete freedom over look and feel. That division of roles is what "headless" means.

We implemented this architecture for an EC site selling motorcycle gear, improving Core Web Vitals (Google's page-speed metrics), delivering a brand-specific UI/UX, and expanding to multiple sales channels. The implementation was carried out by giving instructions to an AI agent (AI-powered development support).

Want to Know More?

Three articles cover headless commerce in detail. If you're new to the topic, reading in order — basics, benefits, then architecture — works best.

Architecture Diagram

Shopify (back side: data and payments)
Storefront API (GraphQL)

Products, collections, cart operations, checkout, customer authentication

Admin API (REST/GraphQL)

Order management, inventory updates, customer management, metafields

One dataset, many storefronts
Next.js Website
Web
Mobile App
App
In-Store POS
Store

In one sentence: Shopify manages a single set of product data, and that data is distributed to multiple storefronts — web, app, and physical store.

Key Results

  • Page speed: Significant improvement in Core Web Vitals (Google's page-speed metrics)
  • User experience: Smoother page transitions and faster interactions
  • Operations: More flexible content updates

Technology Stack

  • Shopify Storefront API (GraphQL)
  • Shopify Admin API (REST/GraphQL)
  • Next.js (App Router)
  • Vercel (hosting / Edge Network)
  • TypeScript