CDN (Content delivery network) can be used to accelerate websites. Setting up CDN can usually be difficult, as it involves several steps, such as reverse proxy, cache, header modifications, mapping, etc. With the help of OneClickCDN, CDN environment can be set up by running just one command in Ubuntu 20.04 LTS 64 bit, Debian 10 64 bit, and CentOS 7/8 64 bit systems. The script will build Apache Traffic Server from source, which server as a reverse proxy and cache for the origin server. It will properly configure and set up websites for users.