8 min readUpdated September 22, 2026
Environment variables explained for beginners
What an environment variable is, why the same code behaves differently in two places, which ones reach the browser, and how to check whether yours is actually set.
Deployment
What happens between your code and a working public URL, and where it tends to break.
8 min readUpdated September 22, 2026
What happens when you deploy an app to Vercel?
From commit to live URL: install, build, output, edge and server functions, environment variables and why the production build is stricter than your laptop.
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