{"meta":{"title":"Understanding IAM for enterprises","intro":"You can use GitHub Enterprise Server's built-in authentication, or you can centrally manage authentication and access to your instance with CAS, LDAP, or SAML.","product":"Enterprise administrators","breadcrumbs":[{"href":"/en/enterprise-server@3.22/admin","title":"Enterprise administrators"},{"href":"/en/enterprise-server@3.22/admin/managing-iam","title":"Identity and access management"},{"href":"/en/enterprise-server@3.22/admin/managing-iam/understanding-iam-for-enterprises","title":"Understand enterprise IAM"}],"documentType":"subcategory"},"body":"# Understanding IAM for enterprises\n\n## Links\n\n* [About SAML for enterprise IAM](/en/enterprise-server@3.22/admin/managing-iam/understanding-iam-for-enterprises/about-saml-for-enterprise-iam)\n\n  You can use SAML single sign-on (SSO) to centrally manage access .\n\n* [/abilities-and-restrictions-of-managed-user-accounts](/en/enterprise-server@3.22/abilities-and-restrictions-of-managed-user-accounts)\n\n* [/getting-started-with-enterprise-managed-users](/en/enterprise-server@3.22/getting-started-with-enterprise-managed-users)\n\n* [Changing authentication methods](/en/enterprise-server@3.22/admin/managing-iam/understanding-iam-for-enterprises/changing-authentication-methods)\n\n  You can change the way GitHub Enterprise Server authenticates with your existing accounts at any time.\n\n* [Allowing built-in authentication for users outside your provider](/en/enterprise-server@3.22/admin/managing-iam/understanding-iam-for-enterprises/allowing-built-in-authentication-for-users-outside-your-provider)\n\n  You can configure fallback authentication to allow built-in authentication for people who don't have an account on your CAS, LDAP, or SAML authentication provider.\n\n* [Troubleshooting identity and access management for your enterprise](/en/enterprise-server@3.22/admin/managing-iam/understanding-iam-for-enterprises/troubleshooting-identity-and-access-management-for-your-enterprise)\n\n  Review common issues and solutions for identity and access management for your enterprise."}