Connect Sap S/4 Hana Public Cloud with Ariba Buying? (CIG)

Hello together,

Is it possible to use the Cloud Integration Gateway to connect a SAP S/4 Hana Public Cloud

- Example: SAP MM

to Ariba Buying and/or Ariba Invoicing?

Is there a document for the different possibilities of the interfaces?
Unfortunately I could not find anything in this regard.

Thank you very much and best regards,
Julien