Same content, different domains? There’s a tag for that. Using rel=canonical to tell Google that similar or identical content exists on multiple domains has a number of clever applications. You can cross-post content across several domains that you own, you can benefit from others republishing your own content, rent or purchase content on other sites, and safely use third-party distribution networks like Medium to spread the word. Rand covers all the canonical bases in this not-to-be-missed edition of Whiteboard Friday.
Read the post: https://moz.com/blog/cross-domain-rel-canonical-seo-value-cross-posted-content