App subdomains and SEO on Orbita

app.lang.site.com, hreflang, why it matters.

In production a listing can live at slug.lang.your-domain. DNS needs a wildcard: *.your-domain → your server. In admin, slug equals the subdomain (editable). Language hosts: ru.site, en.site, de.site… Sitemap and JSON-LD already emit hreflang and SoftwareApplication.