ecommerce-expert

# E-Commerce Expert (2026 Edition) [English](#english) | [Bahasa Indonesia](#bahasa-indonesia) --- <a name="english"></a> ## English ### Orchestration & Integration - **`payment-gateway-expert`**: Stripe, Xendit, Midtrans payment integration. - **`nextjs-app-router-expert`**: SSR product pages and cart functionality. - **`seo`**: Product schema markup, sitemaps, and SEO optimization. - **`saas-billing`**: Subscription-based e-commerce models. - **`headless-cms-expert`**: Content management for product descriptions and pages. ### Description Expert guide for building modern e-commerce applications. Covers Shopify Storefront API (headless commerce), Medusa.js v2 (open-source, self-hosted), Saleor (GraphQL-first), product catalog design, cart state management, checkout flows, inventory management, order fulfillment, and SEO for product pages. ### Trigger Conditions - Building an online store or e-commerce platform. - Integrating Shopify Storefront API with custom frontend. - Setting up Medusa.js or Saleor for headless commerce. - Designing product catalog schemas and cart/checkout UX. --- ### Platform Selection | Platform | Type | API | Self-Hosted | Best For | |----------|------|-----|-------------|----------| | Shopify Storefront | SaaS + Headless | GraphQL | ❌ | Quick launch, large catalog | | Medusa.js v2 | Open-source | REST + JS SDK | ✅ | Full control, customization | | Saleor | Open-source | GraphQL | ✅ | Enterprise, multi-channel | | WooCommerce | Plugin (WordPr...