nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
Websites hosted on Amazon AWS US west 2 region
mod_pagespeed is an open-source Apache module that automatically optimizes web pages and resources on them.
Content Security Policy is best used as defense-in-depth, to reduce the harm caused by content injection attacks.
The http-equiv attribute provides an HTTP header for the information/value of the content attribute. The http-equiv attribute can be used to simulate an HTTP response header.