Shopify

Shopify is a hosted SaaS e-commerce platform — you subscribe and Shopify takes care of infrastructure, payments, security, and scaling. Storefronts are built from themes (Liquid), custom components, and Shopify Apps.

For small and mid-size shops it offers the fastest time to market. The trade-off: monthly fees plus transaction commissions, limits on deep checkout customization, and lock-in to the Shopify ecosystem (themes, apps, proprietary APIs).