Which authentication method is compatible with both Local and AD/LDAP authentication?

The choice of SAML as the authentication method compatible with both Local and AD/LDAP authentication is based on its ability to integrate with various identity providers, making it a versatile option for a range of authentication systems.

SAML, which stands for Security Assertion Markup Language, is an open standard that facilitates single sign-on (SSO) by allowing users to authenticate once and gain access to multiple applications and services. This is particularly useful in environments where organizations use both local user accounts and Active Directory or LDAP for managing user credentials. By using SAML, organizations can streamline their authentication processes, reducing the complexity of managing different user credentials across systems.

The ability of SAML to interact with both local accounts and those managed by directory services like AD/LDAP makes it an ideal solution for hybrid environments, where user management may need to span both systems. This cross-compatibility ensures that whether users access systems through local accounts or through directory-based authentication, their experience remains seamless.

Understanding SAML's flexibility helps clarify its role in modern authentication frameworks, particularly within Tableau and similar data visualization tools, where user access management is critical for security and operational efficiency. Thus, SAML stands out as the correct choice for authentication that accommodates various user account management scenarios.