> For the complete documentation index, see [llms.txt](https://help.cymmetri.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.cymmetri.io/identity-hub/authentication/identity-provider/internal-idp/introduction.md). # Introduction Cymmetri's Internal Identity Provider (IDP) is a powerful authentication solution that supports seamless integration with various Identity Providers (IDPs). We will explore the configuration options for three types of IDPs: * Cymmetri, * Active Directory, and * LDAP. The flexibility of the Cymmetri Internal IDP allows you to manage multiple IDPs of the same type, making it easy to adapt to diverse environments with different Active Directory/ LDAP instances. Cymmetri's Internal IDP aims to provide a centralized and adaptable authentication solution for your environment, supporting various IDP types. To access Internal Identity Providers navigate to **Authentication-> Identity Provider->Internal IDP**
To customize the applicability of different IDPs, administrators need to configure [Authentication Rules](/identity-hub/authentication/authentication-rules.md). These rules enable the configuration of various conditions. When these conditions are met, the corresponding authentication mechanism or IDP is used for user authentication.