What is 3DPassport?
The 3DPassport service provides authentication and single sign-on (SSO) services for the whole 3DEXPERIENCE platform.
If your company already has an SSO system, 3DPassport can be configured as a replica to your enterprise solution, thus enabling SSO between your enterprise solution and the 3DEXPERIENCE platform.
There is no case in which an enterprise SSO solution can replace 3DPassport.
You can customize the 3DPassport on a private cloud, but not on a public cloud which is managed by Dassault Systèmes.