CDN (Content Delivery Network)
Federated CDNs

It is very hard to deploy global international network, which is split over the whole globe. CDN benefits from huge number of delivered content (bytes). More bytes delivered by certain platform are increasing utilization of network; therefore the price of one transferred byte is lower. Lower price per byte brings more customers, which brings more number of content which is delivered to the customers. More content will consume more bytes for delivery. As we can see the pricing process is rounded in one loop without small external impact. This loop is “responsible” for creation of big CDN players, which are controlling the market.

Telecommunication operators are losing market share day by day and international global service providers (Akamai, Globix, Limelight ...) are overtaking the service market. Telecommunication operators are pushed to role of a network provider “cable owner”. This situation is unwanted for Telecommunication operator and therefore they are investing afford to value add services like CDNs.

Under CDN federation, there is huge number of initiatives driven by CDN owners and mostly by telecommunication operators [45], [46]. Federation is way of CDN interconnection, where content can be copied from one CDN to another. Then, the end user can be served by both CDNs by content originated network or by federated network.

Few federated networks act and look like one robust CDN from user perspective and from content provider perspective.