Yes, as with most enterprise software, Zephr has a number of integration points that can be used to work with other data sources, including IDMs. However, the strongly recommended approach for using other identity providers is to use a JWT for each user. In this scenario, the identity provider signs a JWT and sets it as a cookie or otherwise; requests to Zephr that have the appropriate Bearer token will inherit products (entitlement grants) and user attributes based upon claims in the payload.

For more information on JWT see https://jwt.io.