According to Wikipedia,

A content delivery network or content distribution network (CDN) is a large distributed system of servers deployed in multiple data centers across the Internet. The goal of a CDN is to serve content to end-users with high availability and high performance. CDNs serve a large fraction of the Internet content today, including web objects (text, graphics, URLs and scripts), downloadable objects (media files, software, documents), applications (e-commerce, portals), live streaming media, on-demand streaming media, and social networks.

CuteStat Lite is also able to use CDN to serve static files like CSS, JavaScript and Images etc to speed up your loading time of your website. To use such feature you first have to purchase CDN services from the providers like MaxCDN.

Once you have purchased the services, create a New Pull Zone and add http://YOUR-INSTALLATION-URL/templates as a Origin URL. Now you will get a CDN URL from your service providers.

On your "Admin Panel > Website Configurations > CDN Settings", enable CDN_STATUS and update the value of CDN_URL. Now your website will start serving static files via CDN.