A content distribution network handles about half of the internet's traffic (CDN). The CDN's aim is to minimize latency by reducing the actual distance that the request needs to pass, the gap between uploading a request for a web page and the web page loading entirely on your computer.
CDNs store a cached version of the website material in different geographical locations around the globe, defined as "points of presence" to counteract this (PoPs). These PoPs will have their own caching servers and are responsible for distributing the content at the position of the customer.
