# Understanding IAM for enterprises

## Links

* [About SAML for enterprise IAM](/en/enterprise-server@3.22/admin/managing-iam/understanding-iam-for-enterprises/about-saml-for-enterprise-iam)

  You can use SAML single sign-on (SSO) to centrally manage access .

* [/abilities-and-restrictions-of-managed-user-accounts](/en/enterprise-server@3.22/abilities-and-restrictions-of-managed-user-accounts)

* [/getting-started-with-enterprise-managed-users](/en/enterprise-server@3.22/getting-started-with-enterprise-managed-users)

* [Changing authentication methods](/en/enterprise-server@3.22/admin/managing-iam/understanding-iam-for-enterprises/changing-authentication-methods)

  You can change the way GitHub Enterprise Server authenticates with your existing accounts at any time.

* [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)

  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.

* [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)

  Review common issues and solutions for identity and access management for your enterprise.