The paid version (nginx plus) has a few additional features that you often end up needing/wanting (the dashboard for example, for ops users) in enterprise environments.
For what its worth, I switched from nginx to Caddy years ago and haven't looked back - Caddy's built in support for LetsEncrypt and zero configuration for the most common reverse proxy scenarios is just too compelling to ignore now - the speed and ease with which one can throw up an SSL front end with valid letsencrypt cert is amazing.
For what its worth, I switched from nginx to Caddy years ago and haven't looked back - Caddy's built in support for LetsEncrypt and zero configuration for the most common reverse proxy scenarios is just too compelling to ignore now - the speed and ease with which one can throw up an SSL front end with valid letsencrypt cert is amazing.