HR Driven Identity Lifecycle Management for IAG

[SubbuIyer]

Hello Experts,

I am looking for inputs to implement HR Driven Identity Lifecycle Management for a customer who is implementing IAG for SAP Cloud Applications including S/4HANA Cloud.

The SAP documentation on this topic has only SuccessFactors mentioned as the HR System. If the customer does not have SuccessFactors, is this integration not possible for Cloud IAG? Can S/4HANA Cloud Employee Master be leveraged similar to HR Trigger functionality on GRC with SAP HCM? Or can another non-SAP HR application be integrated as the source system?

Thanks in advance for your responses.

Regards,

Subbu Iyer