SAP IDM or CUA

Hello Gurus,

We have GRC 10 implementation project going on, there are like 5 systems which we proposed to be added to CUA and then connected to GRC for role provisioning.

We have some confusion as to whether to go for IDM to manage the accounts centrally or to choose CUA.

Please can you advise whether CUA or IDM is beneficial.

Regards,

Pooja Saste