From the url it looks like marketwatch.com site is using google's AMP thing to implement a lightweight site, then google is mirroring it / distributing it throu

From the url it looks like marketwatch.com site is using google's AMP thing to implement a lightweight site, then google is mirroring it / distributing it through some AMP CDN hosted from a google domain. (this explanation is perhaps only 60% right, someone who actually knows about AMP may like to weigh in and correct me)