1. User provisioning

In order to log in using SSO, you need your users to exist in the Atlassian product. There are several ways to achieve this and you can read more about the different user provisioning options if you are unsure of which one to choose.

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2. SSO protocol

Here you can read about the difference between SAML and OIDC (OpenID Connect).

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Go to the setup guide for SAML to continue.