How We Built Outfyd: A Custom E-Commerce Platform Built for Performance

Not every e-commerce build starts the same way. Some businesses need a product catalogue and a checkout. Outfyd needed something more deliberate — a platform engineered around the buying experience, not bolted together from off-the-shelf parts.

Here's how the build came together, the decisions behind the tech stack, and why the payment architecture was one of the most important choices we made.

Why We Didn't Use a Template Platform

The first conversation with Outfyd made one thing clear: the standard options weren't going to cut it.

Template-based platforms are built for the median use case. They work well when your requirements match what the platform was designed for. When your product experience, checkout logic, or integration needs start to diverge — and they almost always do for a brand serious about growth — you hit walls fast.

Outfyd needed fine-grained control over the product presentation layer, a checkout flow designed around their specific customer journey, and a codebase that could be extended without working around platform limitations. A custom build was the right call from the start.

The Tech Stack

The frontend is built on Next.js with React — a combination we reach for on ecommerce projects because it solves two problems simultaneously: performance and SEO.

Next.js server-side rendering means product pages are delivered as fully rendered HTML. Search engines can index every product, category, and content page without needing to execute JavaScript. On a competitive market, that matters. Organic search traffic that lands on slow, poorly indexed product pages is wasted. Outfyd's pages load fast and index cleanly.

On the frontend, the component architecture was built to scale. Product cards, filters, collection grids, and the cart UI are all modular React components. When new product categories or custom display logic is needed, it plugs into the existing structure rather than requiring a rebuild.

The backend is a lightweight Node.js API layer — purpose-built, no unnecessary overhead. Product data, inventory, and order management talk directly to the services that own that data, with no unnecessary abstraction in between. Responses are fast. The architecture stays simple enough to maintain without a full engineering team.

The Payment Gateway Decision

Payment infrastructure is the part of an e-commerce build that most people underestimate. Choosing the wrong gateway — or integrating it carelessly — creates friction at the exact moment you need zero friction.

For Outfyd, we integrated Stripe as the primary payment processor. The decision came down to three things: developer experience, checkout reliability, and ecosystem depth.

Stripe's API is the cleanest in the industry. That matters practically because it reduces the surface area for integration bugs and simplifies ongoing maintenance. When a payment edge case appears — and they always do — you want a gateway with thorough documentation and predictable behaviour, not one that requires reverse-engineering undocumented responses.

The checkout itself is handled through Stripe's Payment Intents API, which manages the full payment lifecycle: authentication, 3D Secure where required, partial captures, and refunds. This isn't just about processing cards — it's about building a payment flow that handles the full range of real-world scenarios correctly the first time.

On the frontend, Stripe Elements handles the card input UI. Sensitive card data never touches our servers. It goes directly to Stripe's infrastructure, which means our PCI compliance scope is minimal and the security model is as strong as it gets without building your own payment processing infrastructure.

Checkout Architecture

The checkout flow was designed around one principle: remove every step that isn't essential.

Most e-commerce checkout abandonment happens because the process is longer than it needs to be. Forms asking for information the business doesn't actually need. Account creation walls that interrupt the purchase. Payment screens that feel slow or uncertain.

Outfyd's checkout is a single-page flow. Shipping, contact details, and payment all live in one view with a persistent order summary. No page refreshes between steps. Payment confirmation is handled client-side with real-time feedback — the customer knows immediately whether their payment went through, without waiting for a server round trip.

Guest checkout is the default path. Account creation is offered after the purchase is complete, not before. This alone has a meaningful impact on conversion rates — forcing account creation before checkout is one of the most well-documented sources of e-commerce drop-off.

Performance as a Product Feature

Site speed on an e-commerce store isn't a technical metric — it's a commercial one. A slower store converts worse. The data on this is consistent across every major study: each additional second of load time reduces conversion rate measurably.

Every product image on the Outfyd platform is served in next-gen WebP format, sized for the viewport requesting it. Images are the single largest contributor to page weight on most e-commerce sites, and serving them correctly is one of the highest-return optimisations available.

JavaScript is code-split at the route level, which means the browser only loads the code needed for the current page. Product listing pages don't load checkout logic. The cart doesn't load product filter components. Pages stay lean.

The result is a store that feels fast — not just on a desktop with fast broadband, but on a phone with average mobile connectivity. That matters because the majority of the Outfyd audience browses and buys on mobile.

What a Custom Build Actually Means Long-Term

The practical advantage of a custom codebase isn't just the initial build quality. It's what happens after launch.

When Outfyd wants to add a new product category with custom display logic, it doesn't require working around a platform's opinion of how products should be structured. When a new payment method needs to be added, it slots into the existing Stripe integration rather than requiring a platform plugin that may or may not be maintained. When performance needs to be improved, every part of the stack is accessible.

A custom platform is more work upfront. It's also the reason Outfyd owns its technical infrastructure rather than renting it.

If you're building an e-commerce product and you're not sure whether a custom build or a template platform is the right starting point, that's worth a conversation before the first decision is made.