User Login & SSO
How people sign in and get single sign-on across applications.
CIBA Backchannel Authentication
Approve a sign-in or transaction on a separate device.
OAuth Device Authorization
Sign in on input-constrained devices using a second device.
OIDC Code + PKCE
Recommended OIDC login with code and PKCE.
OIDC Implicit Flow Deprecated
Legacy browser flow with tokens in the URL fragment.
SAML SP-Initiated SSO
SP redirects to the IdP, which posts back an assertion.