I have a customer who's company has changed names from "CompanyX" to "BusinessY". Their domain is
companyx.com, and have registered their new domain,
businessy.com, with a CNAME to
Would it be better from an SEO perspective to have it the other way around; have
businessy.com as the main domain and
companyx.com as a CNAME?
The site is new but the content is almost identical, except that all occurrences of "CompanyX" have been changed to "BusinessY".