What it means
When someone visits your site, the request often reaches a reverse proxy first, such as Nginx, Traefik, Caddy or a service like Cloudflare. It decides which application should handle the request, handles HTTPS certificates, compresses and caches responses and can block bad traffic.
It lets one server host several apps and lets you change what runs behind it without visitors noticing.
Why it matters for a business
A well-configured reverse proxy makes sites faster and safer and simplifies hosting. A misconfigured one can cause outages or expose internal services, so it deserves careful setup.
A business example
Things to watch
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Keep certificates renewing automatically.
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Do not expose internal services by accident.
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Set sensible timeouts and request limits.
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Monitor logs for errors and attacks.