You can use Auth0 as an identity provider for Single Sign-On into Terraform Cloud Business Tier using the SAML 2.0 integration by setting up Auth0 and Terraform Cloud, including creating a new application in Auth0, configuring the SAML2 WEB APP addon, mapping claims, and setting up the Identity Provider Metadata URL. You can then access the SSO setup menu in Terraform Cloud, paste the Identity Provider Metadata URL, remove Google Analytics query strings, turn off team management, and copy the Assertion Consumer Service URL. Once saved, you enable the SAML login on Terraform Cloud and test the SSO by logging in with an Auth0 login window that appears after clicking a link. After linking your account, you can access workspaces once assigned to a team.