Nginx reverse proxy resolves common full-stack app deployment issues

Developers deploying full-stack applications from local machines to production servers often encounter CORS errors, mixed content warnings, and exposed backend ports. These issues arise because local development environments mask traffic routing problems. Using an Nginx reverse proxy consolidates traffic through ports 80 or 443, routing requests internally based on URL paths. This setup resolves CORS conflicts by unifying domains, hides internal service ports, and centralizes SSL certificate management. The configuration effectively addresses the security and operational gaps between development and production environments.