Use Microsoft Authenticator for on-premise resources

[ygfr6u0]

We have an on-premise hosted website protected with a Web Access Management solution (CA SiteMinder) which authenticates users on a local AD domain.

Now I need to add a second factor authentication using Microsoft Authenticator app.

How can I integrate the on-premise Web Access Management solution (CA SiteMinder) with Microsoft Authenticator? 

Do I need to synchronize the local AD domain with an Azure tenant? If so, are there Azure APIs to be called by SiteMinder to send the push to Microsoft Authenticator app?

[#2]

Hello, recently I integrated Citrix with Azure MFA using the NPS extension, for example

https://christiaanbrinkhoff.com/2017/02/17/how-to-configure-azure-mfa-for-citrix-netscaler-gateway-r...

https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-nps-extension

I think you should start understanding if SiteMinder can act as a RADIUS client

Hope this information helps you