In many cases a website or web application should be accessible by multiple domains.  The Problem is, that google could treat that as duplicated content (https://support.google.com/webmasters/answer/66359?hl=en) and also the trust is divided between all domains.  That’s why google suggests to choose a preferred (canonical) destination URL and to redirect all requests to the a preferred domain (https://support.google.com/webmasters/answer/93633?hl=en). To achieve that, […]