Limelight Networks (NASDAQ:LLNW, news, filings) has been working with carriers to some degree for a while now, but today they made a formal move deeper into the space by unveiling a managed CDN product called Limelight Deploy. Aimed at telcos, carriers, and service providers of various types, Limelight's new offering does more than simply license the technology. It also includes assistance in the implementation and management.
According to Dan Rayburn, who has additional info on Limelight's plans here, they are not planning to implement a federation between themselves and their customers. Limelight's own CDN can be used for off-net delivery, but it is of course voluntary.
There has been a lot of jostling for position in the CDN space lately. EdgeCast has moved deeper into serving carriers, Akamai purchased Cotendo, Juniper licensed part of Bitgravity, and several others like Jet-Stream are pushing the federation concept hard. Limelight's own position has been rather fluid, as last year they sold off the EyeWonder assets and there were persistent rumors of some sort of deal with Level 3 that has yet to materialize.
Limelight also announced Bell Canada as a customer of the managed CDN offering. The two have been working closely together for quite a while as I recall, so this is not a surprise.