Possible Duplicate:
How does Bittorrent work?
What is the BitTorrent protocol, and the technology behind it? What is the difference between BitTorrent and a content distribution network (CDN)?
Possible Duplicate:
How does Bittorrent work?
What is the BitTorrent protocol, and the technology behind it? What is the difference between BitTorrent and a content distribution network (CDN)?
Well,
BitTorrent (the software) uses the - BitTorrent protocol.
What is the difference between "BitTorrent" and CDN? One is a technology, the other is an organizational approach. A CDN is not a technology to start with - it is a network used to deliver content using whatever standard the customer needs (mostly HTTP) using technology. The term CDN does not imply any specific technology.