eCommerce platforms power online sales through digital storefronts — managing product catalogs, shopping experiences, checkout flows, payment processing, and order fulfillment. Core capabilities include storefront design and hosting, product catalog management, checkout optimization, payment gateway integration, inventory and order management, customer accounts, SEO and merchandising tools, and integration with ERP, shipping, and marketing systems. The category spans hosted platforms (Shopify, BigCommerce, Wix) and enterprise commerce suites (Salesforce Commerce Cloud, Adobe Commerce/Magento, commercetools) as well as headless commerce platforms.