When the template becomes the bottleneck for E-commerce.
Abandoned carts, slow customer-service response, and ad spend that scales linearly with revenue all eat the same margin that should be funding growth.
How custom web dev plays out in e-commerce.
Webflow hits its ceiling when you need programmatic SEO across 500 city pages, a design system that 8 engineers contribute to, or a form that writes directly to your internal API. At that point the platform is not a tool — it is a constraint.
Custom means Next.js 16 App Router, React 19 server components, TypeScript strict, edge-cached on Vercel or Cloudflare. It means sub-1.5s LCP is a hard requirement, not a stretch goal. It means the design system lives in a component library your team can extend, not a theme file nobody touches.
See the full custom web dev playbook.
Next.js 16, React 19, TypeScript, edge-cached — built for performance budgets, design systems, and integrations that no off-the-shelf platform will ever support cleanly.