As you could read in the [Connecting Tableau Desktop to Denodo article](https://community.denodo.com/kb/view/document/Connecting%20Tableau%20Desktop%20to%20Denodo?category=Northbound+Connections), Tableau Server doesn't support “Integrated Authentication”.
However, Tableau Server can connect to Denodo with Kerberos authentication using a service account. When you publish a Denodo data source in Tableau server, you have the following options regarding authentication:
* Prompt user: the user logs in to Tableau server and the first time it uses an object that involves Denodo server, the user will have to enter the credentials again. This happens only once per session.
* Embedded password: the Data source always uses the same user/password to connect to Denodo Server.
Hope this helps!