How then can Content Delivery Networks improve the performance, reliability and capacity of a website and lead to a more stable and resilient environment? The major problem they address is latency: reducing the amount of time it takes for a host server to receive, process and deliver on a request for a page resource.
Latency depends on the distance between the user and the server, and equally on the number of resources a web page contains.
A Content Delivery Network caches resources in distributed networks across a region or worldwide, bringing resources closer to users and reducing round-trip time. Now, all CDNs are not created equal. A CDN, in which geographically distributed "nodes" delivers the same contents as a company's primary server is a better approach. For instance, MaxCDN's Catchpoint test recorded round-trip time improvement from 9ms to 3ms, measuring 40-77% speed improvements across the board.
Download the Free Whitepaper on "Improving Websites Performance with Content Delivery Networks" to learn how to choose the right CDN for your website now.