Module 03
Module Overview
Development, Preview, Production, and Deployment
By the end of this lesson, you should understand the difference between Development, Preview, and Production; what a deployment is; how GitHub, Vercel, Neon, and environment variables work together; and why AppGPT verifies each environment before important actions.
Development is where you build. Preview is where you safely review and test. Production is the live application your real users depend on. A deployment is a specific version of your application placed into one of those environments.
| Development Build & experiment | Preview Review & test | Production Real users |

