A storefront decoupled from the backend:
fast on every device, flexible on every page
Headless commerce separates the storefront, what the shopper sees, from the commerce backend, catalogue, cart, checkout, orders, connected through an API instead of a monolithic platform's own templates. It buys speed and design freedom at the cost of building and maintaining more of the system yourself.
What it is
A headless commerce storefront splits the thing shoppers see from the thing that actually runs commerce logic. Instead of a platform like Shopify or WooCommerce rendering pages from its own templates, a separate front end, usually Next.js, pulls catalogue, pricing, and cart data through an API and renders it however your design calls for, with full control over speed, layout, and what runs on which device.
We built exactly this for a D2C brand audit that found a stock theme capping speed at 4.1 seconds largest contentful paint; the headless rebuild on Next.js and FastAPI brought that down to 1.4 seconds and a 93 to 100 Lighthouse mobile score, because every byte on the page was there by choice, not by default.
When you need it (and when you do not)
You need headless commerce when speed is a genuine competitive factor, when your design has specific interactions a theme system cannot express, or when you are running the same catalogue across multiple surfaces, a web storefront, a mobile app, a Telegram Mini App, and want one backend driving all of them instead of three separate product databases drifting out of sync.
You do not need it if your current platform’s theme already loads fast and converts well; headless architecture trades simplicity for control, and that trade only pays off when you actually use the control. A lot of stores that ask for headless commerce really need a faster theme and a cleaner app stack, which costs far less. We will say so if that is your case.
How we build it (stack, components, integrations)
The front end is Next.js with server-side rendering for product and category pages, so the first paint is fast and SEO sees real content, not a JavaScript shell. Images go through an optimized pipeline sized for the device requesting them. The commerce backend depends on what already exists: Shopify’s Storefront API when the platform’s checkout and payment handling are kept, or a custom FastAPI service with PostgreSQL and Redis when the business needs logic Shopify cannot express, local payment methods, a promo engine with several mechanics, multi-warehouse stock.
Checkout stays as close to the platform’s own secure flow as the architecture allows, since reinventing payment handling is rarely worth the PCI compliance burden. Analytics, GA4, Meta Pixel, Conversions API, and consent management are built into the storefront’s own data layer so every page view and purchase event fires once, correctly, regardless of which component triggered it.
What to watch (risks, cost of ownership, vendor lock-in)
Headless commerce is more system to maintain: two codebases talking over an API instead of one platform handling both. A broken deploy on the front end can take down the storefront even if the backend is fine, so monitoring and a rollback plan matter more than on a monolithic theme. It is also not automatically faster just because it is headless; a poorly built Next.js storefront can be slower than a well-optimized theme. The payoff is real but it depends entirely on execution, which is the part we actually control.
Price and timeline
| Option | Price | What it covers | Timeline |
|---|---|---|---|
| Storefront on existing backend | from $5,000 | Next.js front end on Shopify Storefront API or similar | 6 to 8 weeks |
| Full headless build | from $12,000 | Custom backend, storefront, checkout flow | 10 to 14 weeks |
| Multi-channel headless | from $20,000 | One backend driving web, Mini App and mobile app | 14 to 20 weeks |
Running cost is usually $50 to $200 a month in hosting and CDN, separate from any platform fees on the backend side.
Related
This connects with search and filters with facets and recommendation engine, both easier to build well on a headless architecture than inside a theme’s constraints. See the development service page and the e-commerce service page for package details. For a real headless rebuild and its speed numbers, see the D2C store Thailand audit and rebuild case study and the sports nutrition sales ×2.7 case study.
Think your storefront is slower than it should be? Get in touch and we will measure it before proposing a rebuild.
FAQ
How much does a headless storefront cost?
From $5,000 for a storefront connected to one commerce backend with a standard catalogue. $10,000 to $20,000 is typical when the build includes multiple channels, a design system, or a non-standard checkout flow.
How long does it take?
6 to 12 weeks depending on catalogue complexity and how many custom components the design calls for.
What is the stack?
Next.js on the front end for server-side rendering and fast page loads, connected to a commerce backend through its API: Shopify's Storefront API, a custom FastAPI service with PostgreSQL, or another headless commerce platform, depending on what your business actually needs underneath.
Who owns the code?
You. The storefront repository is yours from the first commit, deployed on infrastructure in your name, Vercel, Cloudflare, or your own server behind Caddy.
Who maintains it after launch?
You, your team, or us on a support plan. A headless storefront has more moving parts than a platform's built-in theme, so plan for a real maintenance relationship, not a one-time handover.