From Shopify to custom website development: when and why?
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Running a $10M+ store on Shopify? Learn when to migrate to custom headless, real performance gains, cost tradeoffs, and ROI from real brands.
Yaroslav Kubik
E-commerce
Shopify didn’t break — your business outgrew it
Shopify is an excellent platform. It helps brands go from $0 to $1–3M fast.
But once you cross $10M+ in GMV, the cracks start to show:
- Checkout limitations
- Slow storefront performance
- Plugin sprawl costing $2K–$8K/month
- Engineering workarounds instead of real solutions
At this stage, the question isn’t “Is Shopify good?” It’s “Is Shopify still the right architecture for our scale?”
Why $10M+ stores hit a ceiling on Shopify
Shopify is a monolithic platform. Your frontend, backend, checkout, and logic are tightly coupled.
That’s great for speed early on. It’s painful when you need:
- Custom pricing logic
- Multi-region infrastructure
- Complex inventory flows
- Advanced personalization
At scale, brands start stacking apps to compensate.
We’ve audited stores paying $4,800/month in apps just to unlock: basic bundles, subscriptions, or B2B pricing.
That’s not flexibility — it’s technical debt disguised as convenience.
The real business impact of staying too long
This isn’t a “developer preference” problem. It’s a revenue problem.
What we see in audits:
- Storefront load time: 5.6s → 2.1s after headless
- Conversion rate uplift: +12% to +28%
- Monthly app spend: $3,200 → $600
When traffic hits millions of sessions per month, every extra second costs real money.
Amazon famously reported a 1% revenue drop per 100ms delay. At $10M+ GMV, performance is no longer optional.
What “headless” actually means (in business terms)
Headless commerce separates:
- Frontend — what users see
- Backend — commerce logic, data, payments
This lets you:
- Build ultra-fast frontends (Next.js, React)
- Customize checkout logic
- Integrate ERP, CRM, PIM cleanly
- Scale regions independently
You can still keep Shopify as a backend — or replace it entirely.
Headless is not about abandoning Shopify. It’s about regaining architectural control.
When migration actually makes sense
We usually recommend headless when at least 2–3 of these are true:
- GMV above $8–10M
- International storefronts
- B2B or hybrid pricing models
- Heavy reliance on paid apps
- Performance bottlenecks hurting conversion
If you’re still validating product-market fit — stay on Shopify. If you’re optimizing margins and growth — headless starts paying off.
How we migrate without killing revenue
The biggest fear founders have: “We’ll break what’s already working.”
That’s why we use a phased migration:
- Phase 1: Headless frontend on top of existing Shopify backend
- Phase 2: Gradual checkout and logic customization
- Phase 3: Backend decoupling (only if needed)
No big-bang rewrites. No SEO resets. No downtime.
Typical timeline: 10–14 weeks for Phase 1 with measurable performance gains.
ROI: does headless actually pay off?
Example from a $12M DTC brand:
- Frontend rebuild cost: $38K
- App cost reduction: $2,400/month
- Conversion lift: +17%
Break-even in 6–7 months. Everything after that is upside.
More importantly, the team stopped fighting the platform and started shipping faster.
Common mistakes brands make
- Migrating everything at once
- Over-engineering from day one
- Ignoring analytics during rollout
Headless is powerful — but only when tied to business goals, not architectural ego.
Final takeaway
Shopify is a great growth engine. Custom headless is a scale engine.
If you’re feeling friction, rising costs, or performance limits, it’s usually not a tooling issue — it’s an architecture one.
We offer a free headless readiness audit for $5M–$50M brands. No sales pitch — just clarity.
Frequently Asked Questions
When should a Shopify store move to headless?
Usually when GMV exceeds $8–10M and performance, flexibility, or app costs start limiting growth.
Can Shopify still be used in a headless setup?
Yes. Many brands keep Shopify as a backend while using a custom headless frontend.
How long does a headless migration take?
A phased migration typically takes 10–14 weeks for the first production-ready release.
Is headless commerce more expensive?
Upfront, yes. Long-term, it often reduces app costs and increases conversion rates.
Will SEO be affected during migration?
Not if done correctly. Phased rollouts preserve URLs, metadata, and rankings.
Does 5Hz handle Shopify headless migrations?
Yes. We specialize in headless commerce for scaling DTC and B2B brands.