From what I understand Node.js doesnt need NginX to work as a http server (or a websockets server or any server for that matter), but I keep reading about how to use NginX inste
In addition to the previous answers, there’s another practical reason to use nginx in front of Node.js, and that’s simply because you might want to run more than one Node app on your server.
If a Node app is listening on port 80, you are limited to that one app. If nginx is listening on port 80 it can proxy the requests to multiple Node apps running on other ports.
It’s also convenient to delegate TLS/SSL/HTTPS to Nginx. Doing TLS directly in Node is possible, but it’s extra work and error-prone. With Nginx (or another proxy) in front of your app, you don’t have to worry about it and there are tools to help you securely configure it.