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I think it's also about prefetching amp pages from Google search. You can't do that without the cdn.

Sure google could modify chrome to allow this and not block it. but you'd be asking for even more technical blockers. And you'd have something that only works for a small portion of the web.

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Sounds like the perfect use case for a nice standard CORSy web prefetch API that all browsers could implement.

And this would work for at least as much of the web as is currently putting effort into AMP.

We are thinking about this. The problem is privacy. AMP can pre-render a page from publisher X without publisher X learning that this happened.

This is important for avoiding that you e.g. would suddenly see re-marketing ads for pages that you have never clicked.

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