A storefront decoupled from the backend:
fast on every device, flexible on every page

What it is

A headless commerce storefront splits the thing shoppers see from the thing that actually runs commerce logic. A platform like Shopify or WooCommerce normally renders pages from its own templates. Here, a separate front end (usually Next.js) pulls catalogue, pricing, and cart data through an API, and renders it however your design calls for. You get 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, with a 93 to 100 Lighthouse mobile score. Every byte on the page was there by choice, not by default.

When you need this (and when you don’t)

You need headless commerce when speed is a genuine competitive factor, or when your design has specific interactions a theme system can’t express. The same goes when you’re running the same catalogue across multiple surfaces: a web storefront, a mobile app, a Telegram Mini App. One backend can drive all of them, instead of three separate product databases drifting out of sync.

You don’t 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’ll say so if that’s your case.

How we build it: stack, components, integrations

The front end is Next.js, with server-side rendering for product and category pages. 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 works when the platform’s checkout and payment handling stay in place. A custom FastAPI service with PostgreSQL and Redis takes over when the business needs logic Shopify can’t express. Local payment methods, a promo engine with several mechanics, multi-warehouse stock, that sort of thing.

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 get built into the storefront’s own data layer. Every page view and purchase event then fires once, correctly, no matter 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. Monitoring and a rollback plan matter more here than on a monolithic theme.

It’s also not automatically faster just because it’s 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, and execution is the part we actually control.

Price and timeline

Running cost is usually $50 to $200 a month in hosting and CDN, separate from any platform fees on the backend side.

What this connects to

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 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.