Our Zurich e-commerce development methodology builds platforms that handle Swiss-specific requirements while enabling European and global commerce. Platform selection matches business requirements. Shopify Plus for brands: the leading choice for Swiss luxury and specialty brands — Shopify Plus provides: multi-currency (CHF and EUR natively, with 130+ currencies for global commerce), multilingual (Shopify Markets for language-specific storefronts), TWINT integration (via Swiss payment gateway partners — Datatrans, Wallee, or Wordline Switzerland), and extensibility (custom apps for clienteling, subscription management, and B2B features). We customise Shopify Plus with: Swiss VAT configuration (8.1% standard, 2.6% reduced for food, exempt for exports — with correct tax invoice generation), Swiss payment gateway (Datatrans is the standard Swiss payment gateway — supporting TWINT, PostFinance, credit cards, invoice payment, and Apple Pay/Google Pay), multilingual storefront (native Swiss German, French, Italian, and English content — not machine-translated), and Swiss shipping integration (Swiss Post, DHL Express, DPD Switzerland — with customs documentation for international shipments). Custom headless commerce for complex requirements: for enterprises with complex B2B needs, multi-brand architectures, or advanced customisation requirements, we build headless commerce platforms using: Commerce Layer, Medusa, or Saleor as the commerce API (product catalogue, pricing, inventory, orders, payments), Next.js storefront (server-rendered for performance, fully customisable for brand experience), and integration layer connecting to: ERP (SAP, Abacus — the leading Swiss ERP for SMEs), PIM (Akeneo, Pimcore — product information management for multilingual, multi-channel product data), and WMS (warehouse management for fulfilment coordination). Swiss-specific implementation handles the details that make Swiss e-commerce work. Cross-border duty calculation: for Swiss retailers shipping internationally, the platform calculates: customs classification (HS codes for product categories), duty rates by destination (from Swiss customs tariff schedules and destination country import tariffs), VAT/GST at destination (EU VAT rates, UK VAT, US sales tax — varying by destination), and total landed cost (displayed to the customer before checkout — eliminating the surprise charges that cause returns and dissatisfaction). For EU retailers selling to Switzerland (reverse cross-border): Swiss import VAT (8.1% on goods above CHF 65), Swiss customs duty, and integration with Swiss customs clearance services. Swiss Post integration: domestic shipping with Swiss Post Priority and Economy, international shipping via Swiss Post International and express carriers, customs documentation (CN22/CN23 commercial invoices, EUR.1 movement certificates for preferential duty treatment), and tracking integration (Swiss Post tracking API for real-time delivery status). Invoice payment (Rechnung): integration with Swiss invoice payment providers (MF Group (Byjuno), Klarna (operating in Switzerland), or Powerpay) — enabling customers to receive goods and pay within 30 days via invoice. The provider handles credit checking and payment guarantee — the retailer receives payment immediately while the customer pays on terms.