Pillar 01 · Headless Web Architecture
Next.js Ecommerce Development
Custom Next.js storefronts rendered at the edge, with Razorpay and UPI checkout, a no-code owner dashboard, and a codebase you own outright. No monthly platform fee.
System diagram · Checkout latency
Every hop between Pay and paid, on one timeline.
One checkout traced hop by hop through two architectures. The bars start on a log scale so the millisecond steps stay visible next to the OTP wait; switch to linear to see the real proportions.
Fig. 01Panarch reference build benchmark
Time from Pay to approval · log scale, 1 ms to 100 s
Monolithic theme checkout
BaselineCheckout response from a central origin Cart, tax and order calls on one shared server
1,400 ms
SMS OTP delivery wait Bank OTP delivered over telecom SMS
18–60 s
Wait before the payment is approved Sum of the steps above
19.4–61.4 s
Panarch edge path · Mumbai bom1
Reference buildInventory lock SKU reserved before any payment call
12 ms
Razorpay order creation One server-to-server call over TLS 1.3
<45 ms
UPI Intent, biometric approval The shopper's UPI app opens natively: no redirect, no OTP
1.2 s
Wait before the payment is approved Sum of the steps above
≈1.26 s
Checkout success rate
- Monolithic theme checkout 71%
- Panarch edge path 94.6%
Your assumptions
At the benchmark success rates
472 orders a month that complete instead of failing
₹11,80,000 monthly revenue carried by those orders
Attempts × (94.6% − 71%) × order value. A sensitivity check on numbers you set, not a forecast: your store's real baseline is measured in the consult.
Diagnose Your LatencyRevenue outcome
Fewer abandoned payments. In the reference build, checkout success was 71% on the monolithic path and 94.6% on the edge path. Each point of that gap is a shopper who reached Pay and used to drop.
Panarch reference build benchmark: the latency and success figures come from Panarch's own reference checkout, comparing a monolithic theme checkout with SMS OTP against the edge path on Vercel's Mumbai region (bom1). They are not an average across client stores; your store is measured in the consult. Totals are the sum of the listed steps.
Evidence
- 100/100 Mobile PageSpeed, lab test - panarchdigital.com
- 0.47s LCP, P75 field data - panarchdigital.com
- 9 Owner CMS modules shipped - Mithila Enterprises
- ~$84K Modelled 3-yr platform cost delta vs Shopify Plus at $2M/yr GMV, excluding build cost
The problem
Theme-and-app storefronts load every installed app's scripts on every page, and the delay costs sales: Akamai's 2017 retail study found a 100 ms slowdown in load time can cut conversion rates by up to 7%.
Source: Akamai, State of Online Retail Performance (Apr 2017), via eCommerceNews
What we build
We rebuild the storefront as a decoupled Next.js app: server-rendered pages cached at the edge, checkout on Razorpay and UPI, Supabase for orders and inventory, and a design system built for your brand instead of a theme.
Why it pays back
The storefront becomes an asset you own instead of a monthly rent line: no platform fee, no revenue share, and a codebase any Next.js engineer can extend.
Stack
- Next.js
- Supabase
- Tailwind CSS
- Vercel Edge
How the engagement runs
8–12 Week Build
- Step 01
Architecture Audit
We profile the current storefront (Core Web Vitals, script weight, app stack, checkout drop-off) and agree a performance budget and launch scope.
- Step 02
Core Build
Next.js storefront, Supabase data layer, Razorpay/UPI checkout and the owner dashboard, shipped to a staging URL for review at each milestone.
- Step 03
Security & QA
Row-level security on every table, verified payment webhooks, and load tests against the agreed performance budget.
- Step 04
Edge Launch
DNS cutover to the edge network, redirects mapped from the old URLs, and real-user Core Web Vitals monitoring from launch day.
FAQ
Headless Web Architecture, answered.
No platform licence and no percentage of revenue. You own the repository outright; recurring spend is infrastructure you control (Vercel hosting from $20 per seat per month, scaling with traffic) plus your payment gateway's fees.
No. Products, collections, banners and page content are edited from a no-code dashboard, so nobody on your team touches the codebase. You only need engineering when you want new features.
A theme-based store loads the platform's scripts plus every installed app's scripts on every page. We render pages on the server, cache them at the edge and ship only the JavaScript each page needs. That is how panarchdigital.com scores 100/100 on mobile PageSpeed in lab tests; the methodology is published on our performance baseline page.
Next step
Not sure which tier fits? Talk to the team that builds it.
30-minute consult with founder & principal engineer Arpan Tyagi.
Further reading
- App Stack Tax: How 15 Shopify Apps Bloat Scripts and Destroy $10,000/Mo in Margins
- The 36-Month Balance Sheet: Why 'Cheap' Platforms Cost 4x More Over 3 Years
- Shopify vs Next.js for D2C brands: the full technical audit
- How we hit 100/100 mobile PageSpeed on panarchdigital.com
- Shopify Plus vs owned stack: 3-year cost analysis