I’ve seen this pattern over and over with Claude Code (and vibe-coded projects in general): you build something that looks fine… until you hit edge cases, add features, or try to deploy. Then it all falls apart. In this video I demystify the “tech stack” behind apps that actually survive production—what each layer does, why it exists, and where beginners typically get trapped. I walk through the stack by expanding a simple app step-by-step, starting with the UI (React), then running straight into the data persistence problem. From there, I show why localStorage only works for browser-only apps, and why “just use SQLite” is the classic beginner trap—especially if you plan to deploy to Vercel/Netlify where that local file-based DB gets wiped on restarts. I explain why you need a backend layer (server logic) to protect sensitive operations, and why moving to Next.js simplifies full-stack development by keeping frontend + backend in one place. Then I migrate the database to Postgres (running locally via Docker, and later hosted on providers like Neon/Supabase/Railway) using Drizzle ORM, and I add authentication with BetterAuth—because security is not something you should vibe code. Finally, I give you my prompting tip for getting a production-ready stack from the start, plus my free boilerplate template to ship faster.