Gemini 3.0 can build full-stack applications without writing code by combining Google Stitch for UI design, Anti-gravity IDE for autonomous coding, Tiger Data's Agentic Postgres for backend management, O.js for authentication, Stripe for payments, and Vercel for deployment. The tutorial demonstrates creating an AI course website from scratch using these free tools, including database setup with forkable infrastructure, MCP server integration, and complete frontend-to-backend implementation with authentication and payment processing.

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