Go to the Addons tab and enable the SAML2 Web App toggle.
On the Settings tab, set the Application Callback URL to: https://signin.aws.amazon.com/saml.
Paste the following code into the Settings text box and click Debug. Be sure to replace the AWS_SSO_ISSUER_URL and AWS_SSO_ACS_URL placeholders with values you copied from AWS.
Scroll to the bottom of the page and click Enable.
On the Usage tab, locate Identity Provider Metadata, and click Download to download the metadata file. You’ll need this when you configure Auth0 as the identity provider.