Hi all, Site is using CDN for images. This means URLs are "external". How do search engines know that those files are "CDN" and are NOT external resources?
Selected answers from the Dumb SEO Questions Facebook & G+ community.
Stockbridge Truslow: Not 100% sure here, but CDNs are arranged in known clusters and resolve back to things that would make it easy to see that it`s a CDN. I don`t know exactly how they manage that - but... even with my limited experience in that area, I can think of several ways to easily accomplish it, so I`d have to assume that Google can manage it just fine - and automatically.
Michael Martinez: I don`t think it matters to Google, though, where the images are hosted. Do you have a specific concern?
Rudolf Ladyzhenskii: Yes. Don`t external links "suck" seo juices from your site?
Michael Martinez: Rudolf Ladyzhenskii No. I wish people (bloggers, vloggers, conference presenters, etc.) would quit repeating that nonsense. It`s an old myth that needs to die a horrible death.
Worse, you`re talking about images - which never pass PageRank in any possible way.
Rudolf Ladyzhenskii: Michael Martinez thanks. That was a late night thought brought about by ScreamingFrog showing list of all those links.
Hi all, Site is using CDN for images. This means URLs are "external". How do search engines know that those files are "CDN" and are NOT external resources? 
