AWS Single Sign-On and AWS Organizations
AWS Single Sign-On (AWS SSO) provides single sign-on services for all of your AWS accounts and cloud applications. It connects with Microsoft Active Directory through AWS Directory Service to allow users in that directory to sign in to a personalized user portal using their existing Active Directory user names and passwords. From the portal, users have access to all the AWS accounts and cloud applications that you provide in the portal.
For more information about AWS SSO, see the AWS Single Sign-On User Guide.
Use the following information to help you integrate AWS Single Sign-On with AWS Organizations.
Service-linked roles created when you enable integration
The following service-linked role is automatically created in your organization's management account when you enable trusted access. This role allows AWS SSO to perform supported operations within your organization's accounts in your organization.
You can delete or modify this role only if you disable trusted access between AWS SSO and Organizations, or if you remove the member account from the organization.
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AWSServiceRoleForSSO
Service principals used by the service-linked roles
The service-linked role in the previous section can be assumed only by the service principals authorized by the trust relationships defined for the role. The service-linked roles used by AWS SSO grant access to the following service principals:
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sso.amazonaws.com
Enabling trusted access with AWS SSO
For information about the permissions needed to enable trusted access, see Permissions required to enable trusted access.
You can enable trusted access using either the AWS Single Sign-On console or the AWS Organizations console.
We strongly recommend that whenever possible, you use the AWS Single Sign-On console or tools to enable integration with Organizations. This lets AWS Single Sign-On perform any configuration that it requires, such as creating resources needed by the service. Proceed with these steps only if you can’t enable integration using the tools provided by AWS Single Sign-On. For more information, see this note.
If you enable trusted access by using the AWS Single Sign-On console or tools then you don’t need to complete these steps.
AWS SSO requires trusted access with AWS Organizations to function. Trusted access is enabled when you set up AWS SSO. For more information, see Getting Started - Step 1: Enable AWS Single Sign-On in the AWS Single Sign-On User Guide.
You can enable trusted access by using either the AWS Organizations console, by running a AWS CLI command, or by calling an API operation in one of the AWS SDKs.
Disabling trusted access with AWS SSO
For information about the permissions needed to disable trusted access, see Permissions required to disable trusted access.
AWS SSO requires trusted access with AWS Organizations to operate. If you disable trusted access using AWS Organizations while you are using AWS SSO, it stops functioning because it can't access the organization. Users can't use AWS SSO to access accounts. Any roles that AWS SSO creates remain, but the AWS SSO service can't access them. The AWS SSO service-linked roles remain. If you reenable trusted access, AWS SSO continues to operate as before, without the need for you to reconfigure the service.
If you remove an account from your organization, AWS SSO automatically cleans up any metadata and resources, such as its service-linked role. A standalone account that is removed from an organization no longer works with AWS SSO.
You can disable trusted access using only the Organizations tools.
You can disable trusted access by using either the AWS Organizations console, by running an Organizations AWS CLI command, or by calling an Organizations API operation in one of the AWS SDKs.
Enabling a delegated administrator account for AWS SSO
When you designate a member account as a delegated administrator for the organization, users and roles from that account can perform administrative actions for AWS SSO that otherwise can be performed only by users or roles in the organization's management account. This helps you to separate management of the organization from management of AWS SSO.
Only an IAM user or role in the Organizations management account can configure a member account as a delegated administrator for AWS SSO in the organization.
For instructions about how to enable a delegated administrator account for AWS SSO, see Delegated administration in the AWS Single Sign-On User Guide.
