portfolio/.well-known/microsoft-identity-association.json

{
  "associatedApplications": [
    {
      "applicationId": "149f30d6-e352-47c7-9dd1-f1c9d7e91421"
    },
    {
      "applicationId": "89e17f70-0e97-4338-88c1-c628f4968d37"
    }
  ]
}