Vercel Multi-Env Setup Overview Configure Vercel's three built-in environments (Development, Preview, Production) with scoped environment variables, branch-specific preview URLs, and custom environments for staging. Uses Vercel's native environment system and the REST API for automation. Prerequisites - Vercel project linked and deployed - Separate database instances per environment (recommended) - Access to Vercel dashboard or VERCEL TOKEN for API Instructions Step 1: Understand Vercel's Environment Model Vercel provides three built-in environments: | Environment | Trigger | URL Pattern | Us…