No, I'm getting it from wikipedia. It has nothing (directly) to do with Cloudflare or any other commercial interests - bittorrent is a content delivery network.

No, I'm getting it from wikipedia. It has nothing (directly) to do with Cloudflare or any other commercial interests - bittorrent is a content delivery network. You could run a private CDN. The whole purpose is moving the data to be consumed away from some centralized primary host, to nodes which are more proximal to the data consumer (either spatially, or solely in terms of bandwidth, torrent bandwidth is decoupled from the primary server). Bittorrent sort of automatically works out "proximity" by pulling from the highest bandwidth seeders. Also it's geographically distributed, providing redundancy and availability, which is arguably the more important part than proximity. I think the criteria are that it a) delivers/distributes content b) is a network, implying multiple nodes c) lowers the latency and/or bandwidth cost of data consumption, by d) leveraging geographically distributed redundancy and/or proximity. I think the key feature is geographically distributed redundancy which differentiates it from a regular cache. https://en.wikipedia.org/wiki/Content_delivery_network https://en.wikipedia.org/wiki/Content_delivery_network