ARCHITECTURE WIRE: deals.brand.com subdomain vs /deals/ subfolder

ARCHITECTURE WIRE: deals.brand.com subdomain vs /deals/ subfolder
Where to host the coupon section — old debate, fresh stakes. Sources weigh in.
— Subdomain (deals.site.com): clean separation, easier to sell or spin off, but Google treats it as semi-separate and it doesn't fully share the main domain's authority.
— Subfolder (site.com/deals/): inherits full domain authority, ranks faster, but couples your coupon section's quality signals to the whole site — a thin-code penalty can splash onto the parent.
Why it matters: We hear most operators now choose subfolder for the authority pass-through — unless the coupon section is risky scraped content, in which case subdomain isolation is the firewall. Pick by how clean your codes are.
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