rybodium
rybodium3mo ago

Visting sites that SSO with the same Zitadel instance

If a customer logs in from one site, can they seamlessly go between multiple sites using the same Zitadel instance for SSO without having to log in again?
5 Replies
rybodium
rybodiumOP3mo ago
I think Clerk refers to this as "satellite domains".
Rajat
Rajat3mo ago
hey @rybodium if all the sites share the same top-level domain (like site1.example.com and site2.example.com), Zitadel can do SSO automatically using cookies. https://zitadel.com/docs/guides/integrate/login/hosted-login
rybodium
rybodiumOP3mo ago
What if they don't have the same TLD?
Rajat Singh
Rajat Singh3mo ago
hey @rybodium even with different TLDs, your users can still enjoy "near‑seamless" SSO if you enable domain discovery and verify each domain under the respective org and you map custom domains (e.g. app1.com, app2.net) under the same instance.
rybodium
rybodiumOP3mo ago
We're trying to use Zitadel as a B2C CIAM so I don't think domain discovery applies. Most of our customers have gmail addresses.

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