Before you start playing with NGINX please read an official Beginner’s Guide. It's a great introduction for everyone. Nginx (/ˌɛndʒɪnˈɛks/ EN-jin-EKS, stylized as NGINX or nginx) is an open source HTTP and reverse proxy server, a mail proxy server, and a generic TCP/UDP proxy server with a strong focus on high concurrency, performance and low memory usage. It is originally written by Igor Sysoev.