CDNs are used to deliver media-rich files such as video streaming across different networks.
A recent report from Frost & Sullivan estimates that the global CDN market will grow from $725 million (£523 million) to $2.6 billion (£1.87 billion) by the year 2012, largely thanks to increased broadband internet take-up across the world.
Frost & Sullivan financial analyst, Swarna Pasupathi, commented: "The cumulative effect of factors such as 'rich-media' files across verticals, coupled with enhanced broadband penetration, are reflected in strong market expansion.
"The increased deployment of 'rich-media' content across entertainment, media, and enterprise verticals is the key contributing factor to the overall growth of the video CDN market."
Marked growth in peer-to-peer file sharing, often used for the live streaming of sport, is another factor which is expected to contribute to the expansion of the CDN sector.