Allow users to programmatically login to Tableau Online via OAuth2, thereby bypassing the Tableau login screen. This is helpful for embedding Tableau workbooks/views into web apps. Seems the only approach available today is SSO via SAML, which is a bit outdated. However, even this approach is hobbled in Tableau Online and still requires the login screen of the IdP. With Tableau Server this has been enabled via Trusted authentication, but for some reason Tableau Online remains without this functionality.
I just submitted an idea to add Trusted Authentication to Tableau Online, but why not just do it right at allow OAuth2 as a means to authenticate. Seems good enough for folks like Twitter, Facebook and LinkedIn. I suggest it would be a good solution for Tableau and the Tableau community.