We have a website that is a subdomain of our primary domain, such as site.example.com
. The official URL of the website is http://site.example.com
, but some people keep referring to it as www.site.example.com
.
I have a redirect rule in place to redirect www.site.example.com
to site.example.com
, but I ultimately need to explain why www.site.example.com
is bad practice (or is a bad idea), but I don't know how. Are there any guidelines or rules that dictate best practices with regard to domain names, specifically the use of subdomains?