Piggybacking on Youtube servers:
The USC researchers believe Google is piggybacking on infrastructure it already has deployed around the world for YouTube. But it is possible Google is adding equipment to support the expansion as well.
This is an existing model, previously used by video content companies such as Netflix:
Other content distributors like Netflix are using a similar strategy to get data as close to the end user as possible, said Dan Rayburn, a principal analyst at the consulting firm Frost and Sullivan. Such companies put equipment inside local ISPs that store copies of popular videos. Users benefit because locally stored content loads more quickly. Meanwhile, ISPs can save on bandwidth costs if they can load their own copy of a popular video as opposed to downloading it from a remote data center every time a user hits play.
The result is that delivery of search results will be a lot faster:
What’s interesting is that, according to Professor Govindan, is that Google for the first time is using the same strategy for search. “It will certainly speed up [search results] for more people around the globe,” he says.