At some point we would like Alteryx Gallery to support SSO via SAML and Authorization via AD groups. The way I want is to have Authentication via SAML and Authorization via AD groups. For instance one of our apps Tableau: It does authentication via SAML (SSO) and for authorization, we import AD groups into Tableau thrice a day(stores the groups in a .xml file), once the groups are in the Tableau, we secure the objects within Tableau using that LDAP groups (which kind of become local groups after import). Basically the userid after the successful authentication step is used by the app for authorization.
I just stated Tableau as one of the ways to implement Authentication and Authorization for an enterprise app. If Alteryx Gallery needs to be an enterprise app, you will need to look into this idea.
Thanks
Raj