Zuar Portals can be configured to use Tableau Server/Online for authentication.

Users who authenticate to Tableau Server/Online with basic authentication (local, Active Directory, or LDAP identity stores) can log into a Zuar Portal with the same credentials (username and password).
Tableau Server/Online Authentication
Please see Tableau's documentation on authentication for more information on how Tableau's authentication options:
- Local authentication
- Active Directory / LDAP
- SAML - Which SAML IdP is Tableau using?
Tableau Trusted Authentication
Zuar Portals can also leverage Tableau Server's Trusted Authentication.