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Amazon Web Services Single Sign On OpenID Connect (OIDC) is a web service that enables a client (such as Amazon Web Services CLI or a native application) to register with Amazon Web Services SSO. The service also enables the client to fetch the user’s access token upon successful authentication and authorization with Amazon Web Services SSO.


Although Amazon Web Services Single Sign-On was renamed, the sso and identitystore API namespaces will continue to retain their original name for backward compatibility purposes. For more information, see Amazon Web Services SSO rename .

Considerations for Using This Guide

Before you begin using this guide, we recommend that you first review the following important information about how the Amazon Web Services SSO OIDC service works.

  • The Amazon Web Services SSO OIDC service currently implements only the portions of the OAuth 2.0 Device Authorization Grant standard ( ) that are necessary to enable single sign-on authentication with the AWS CLI. Support for other OIDC flows frequently needed for native applications, such as Authorization Code Flow (+ PKCE), will be addressed in future releases.
  • The service emits only OIDC access tokens, such that obtaining a new token (For example, token refresh) requires explicit user re-authentication.
  • The access tokens provided by this service grant access to all AWS account entitlements assigned to an Amazon Web Services SSO user, not just a particular application.
  • The documentation in this guide does not describe the mechanism to convert the access token into AWS Auth (“sigv4”) credentials for use with IAM-protected AWS service endpoints. For more information, see GetRoleCredentials in the Amazon Web Services SSO Portal API Reference Guide .

For general information about Amazon Web Services SSO, see What is Amazon Web Services SSO? in the Amazon Web Services SSO User Guide .