If you're talking about the "best" datacenters... Google hit upon the strategy of scale-out-commodity hardware a few years before Amazon did. Also, Google talk

If you're talking about the "best" datacenters... Google hit upon the strategy of scale-out-commodity hardware a few years before Amazon did. Also, Google talks more about their infrastructure than Amazon does, so people often think it's "better" from the outside. Whether it is actually better or not is probably an unknowable question from the outside and even if you had all the data it might depend on how you trade off speed, power efficiency, cost etc.