* Accelerated Mobile Pages: https://ampproject.org
* Facebook Instant Articles: https://instantarticles.fb.com/
* Apple News: https://developer.apple.com/news-publisher/
* source: https://developers.google.com/search/docs/guides/about-amp
* Speed Index: https://sites.google.com/a/webpagetest.org/docs/using-webpag...