|reply to xz |
More and more service providers (hosting, big websites...) are offering services within ISP networks. This reduce latency and reduce bandwidth usage (by caching content).
For example, when an ISP user request a Youtube video, the request is directed to the cache servers, if the video is not there it's fetch for the first time from the main servers, then all subsequent request are directly streamed/served from the cache server.
It's common practice these days. You can also see this with Microsoft, the last time I checked a lot of their stuff was coming from Akamai cache servers and not directly from the Redmond company.