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.