I have a question about the multi languages website, which URL is better?
en.example.com or example.com/en
In my experience, use subdomain (en.example.com) will be more easy to implement, especially you use fortify as the auth system.
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2bf3047
I'd personally go for the path rather than the subdomain. Subdomains have separate SEO tracking and reputation in most search engines, plus paths are far more common on the web.