Checkout now runs on platformdtc.com

Shoppers used to be handed from your store to checkout.platformdtc.com — a hostname that matched neither your brand nor anything they had clicked. That hop cost a fresh DNS lookup and TLS handshake on the slowest possible moment in the funnel, and it showed buyers a domain name nobody chose. Checkout now runs at platformdtc.com/checkout/… instead, on the same address as everything else.

Stores on their own custom domain are unaffected and remain the better setup: checkout there runs on yourbrand.com, where the shopper never leaves your brand at all.

Changed

• Checkout runs at platformdtc.com/checkout/<session>. One origin, one certificate, one connection — the checkout page now reuses the connection the shopper already has.
• Buy-now permalinks read platformdtc.com/cart/<variant>:<qty>. The permalink keeps the same shape it has always had; only the domain changed. A permalink is the one checkout link a person reads and pastes, so its shape does not move when your store does.
• Express wallets registered on the new address. Apple Pay, Google Pay, Link, Amazon Pay and Klarna are registered for the new host before any store is moved onto it. They only render on a registered hostname, and an unregistered one fails silently — so the move is gated on the registration, not on a checklist.

Kept working

• Every link you have already sent still resolves. Permalinks running in live ad campaigns, recovery emails already in inboxes and links inside released mobile app builds keep working. They are forwarded to the new address with their query string intact, so payment returns and campaign attribution are unaffected.
• Your shopper account area has not moved. Sign-in, orders, saved products, followed stores and the subscription portal stay exactly where they were.
• Nothing about your checkout changed but the address. Same branding, same blocks, same payment providers, same settings.

New reference: Checkout URLs.