The eCommerce Stack We Use in 2026 (And Why)

Every founder asks the same question: "Should I use Shopify or build custom?"

Scaling eCommerce requires a robust, flexible technical foundation.

Our honest answer: it depends on margin and control. After shipping stores both ways, here is the exact decision framework we use at Tech Infotics — and the stack we default to in 2026.

The Shopify vs. custom decision (with real math)

Choose Shopify when: you do under $50k/month, sell standard products with standard variants, and want to launch in weeks. Shopify's $39–$399/month plans plus ~2.9% transaction fees are cheaper than developer salaries until real volume kicks in. Its app ecosystem solves 90% of common needs without code.

Choose custom when: you need custom bundles/kits, subscriptions with flexible billing, multi-currency pricing you control, crypto payments, a heavy affiliate or MLM layer, or marketplace features. At that point Shopify's app fees ($30–$200/month per app, five apps deep) plus workarounds cost more than a custom build — and you still do not own the platform. A custom TanStack + Supabase build typically pays for itself within the first year at $50k+/month volume, because you stop paying the "Shopify tax" on every order and every feature.

The worst choice is the middle: a heavily hacked Shopify store with 15 apps fighting each other. That is slower and more expensive than either clean option.

Our 2026 default stack (custom route)

• Frontend: TanStack Start + Tailwind CSS v4. Server-side rendering out of the box (critical for SEO — Google indexes your product pages fully on first crawl), sub-second page loads, and a component system your team can actually maintain.
• Backend: Supabase (Postgres + Auth + Storage). You get a real database, authentication, file storage and realtime features without managing servers. Row-level security means customer data is protected at the database layer, not just in app code.
• Payments: Stripe + PayPal + crypto via NOWPayments. Stripe for cards (best developer experience, global coverage), PayPal for buyer trust (still converts older demographics), crypto for borderless customers. For Pakistan-based sellers: pair with local gateways or bank transfer flows where Stripe is unavailable, and price in USD for international buyers.
• Admin: a custom dashboard so the client never opens code — orders, inventory, discounts, content and basic analytics in one place. This is the piece SaaS platforms charge extra for; on custom, it is yours.
• Automation: Google Sheets + n8n for order sync, low-stock alerts and daily sales reports. A store that emails you a P&L summary every morning beats one where you log in to check.

What "SEO-ready and multilingual out of the box" actually means

Every store we ship includes: semantic HTML with one H1 per page, product schema (price, availability, reviews) so Google shows rich snippets, canonical URLs that survive variant/filter parameters, XML sitemaps split by product category, and hreflang tags for each language. For multilingual (English + Urdu is our most common pairing), we use route-based locales (/en/, /ur/) rather than auto-translate widgets — machine-translated checkout pages kill trust and conversions.

Mobile-first is non-negotiable: 70%+ of eCommerce traffic in our markets is mobile. We design thumb-reachable CTAs, test checkout on real mid-range Android devices (not just iPhones), and keep the cart-to-payment flow under 4 taps.

The unglamorous parts that decide success

• Speed budget: every product page must hit LCP under 2.5s on 4G. That means WebP images with explicit dimensions, no autoplay video heroes, and lazy-loading below the fold.
• Trust signals: real business address and phone, clear return/refund policy, COD terms spelled out for Pakistani buyers, and genuine reviews (never fake them — one exposure destroys the brand).
• Analytics: server-side purchase events, not just browser pixels. iOS privacy changes made client-side tracking unreliable; measure what matters in your own database.

Real cost breakdown: year one

Founders always ask for numbers, so here are honest ones from our client work:

Shopify route: $39–$399/month plan + 2.9% + $0.30 per transaction + apps ($100–$400/month for reviews, upsells, bundles, currency). At $30k/month revenue, you are paying roughly $1,200–$1,800/month all-in — $14k–$22k/year — before a developer touches anything custom.

Custom route: $8k–$20k one-time build (depending on features) + ~$50–$200/month hosting (Supabase + VPS/CDN) + payment processing fees only. Year-one total: roughly $9k–$22k, and year two drops to hosting + maintenance because you own everything.

The crossover is real: below ~$25k/month, Shopify is cheaper and faster. Above ~$50k/month with custom needs, custom wins every time. Between those numbers, it comes down to how weird your requirements are.

What about migrating later?

The most expensive mistake is starting on Shopify, outgrowing it at $80k/month, then rebuilding under pressure while orders keep coming. If you suspect you will need custom features within 18 months, price the rebuild into your decision today.

Migration itself is manageable if you plan for it: keep clean product data (exportable CSVs, not app-locked), own your domain and email list from day one, and set up 301 redirects for every old URL. We have migrated stores both directions; the painful ones are always the ones where the old platform held the customer data hostage.

Pick the platform that matches your margin and control needs, execute the fundamentals above, and the stack stops being the bottleneck — your marketing becomes the ceiling, which is exactly where you want the fight to be.