Google using technology they have developed to rank other sites on their search engine while making sure that nobody cna leave the Google-verse (as AMP sites are served from Google's CDN and not the original source). It would open them up to huge anti trust issues, so at least officially they have said that it's not a ranking factor.
https://developers.google.com/search/docs/guides/about-amp
Google using technology they have developed to rank other sites on their search engine while making sure that nobody cna leave the Google-verse (as AMP sites are served from Google's CDN and not the original source). It would open them up to huge anti trust issues, so at least officially they have said that it's not a ranking factor.