“AMP’s biggest advantage isn’t the library—you can beat that on your own. It isn’t the AMP cache—you can get many of those optimizations through a good build script, and all of them through a decent CDN provider. That’s not to say there aren’t some really smart things happening in the AMP JS library or the cache—there are. It’s just not what makes the biggest difference from a performance perspective.
AMP’s biggest advantage is the restrictions it draws on how much stuff you can cram into a single page.”