E-commerce platforms host the storefront, the cart, and the order-management workflow. Shopify and BigCommerce dominate mid-market direct-to-consumer brands. WooCommerce and Magento (now Adobe Commerce) power a long tail of self-hosted and agency-built stores. Salesforce Commerce Cloud and SAP Commerce serve enterprises that need deep ERP and order-management ties. Composable commerce—using best-of-breed services for product information, search, checkout, and CMS—is a real trend in the enterprise tier but rarely pays back below a few hundred million in GMV.
The expensive surprises in e-commerce rarely sit inside the storefront itself. They are in returns handling, fraud, sales-tax compliance after the U.S. Supreme Court’s Wayfair decision, international VAT, and the per-transaction fees that compound at scale. A 0.3% saving on payment processing is small in absolute terms until volume crosses nine figures, at which point it funds an entire engineering team.
When evaluating platforms, the right questions are about peak-day performance (Black Friday, flash sales), checkout conversion benchmarks for similar catalog sizes, and how cleanly the platform exposes data to a warehouse for marketing attribution. Headless implementations buy flexibility but add the responsibility of owning a frontend, performance budget, and SEO—a tradeoff that suits some brands and quietly crushes others who underestimated the engineering ongoing.