SAP Authentication Service with MFA

Hello

Context: I have a BTP subaccount using a SAP Authentication Service tenant to maintain user access to our custom applications. We need to send a validation code at the first connection of the users to confirm their phone number.

I saw there is a configuration menu in the IAS tenant to use an MFA service (with sms validation code)

I learned SAP sold his MFA solution to Synch. But is it possible to use another service for MFA and sending SMS ? If so how can I do that? is there a standard for MFA Api that will be compatible with the built-in configuration interface?

Thanks for your help.