Build a Multi-Tenant E-Commerce with Next.js, Tailwind v4, Stripe Connect

In this 20 hour tutorial, you’ll build your own Gumroad-style platform from scratch. A real multi-tenant e-commerce app where creators have their own storefronts, sell digital products, and get paid through Stripe Connect. You’ll cover features like subdomains, product reviews, personal libraries, file delivery, and automatic platform fees. There’s also an admin dashboard with role-based access control. Built with Next.js 15, Payload and Stripe. A solid, practical project with everything you need to learn how modern platforms like this are made.