You can use Azure MFA with workspace using NPS extension on RADIUS server .please read the below post for better understanding.
MFA Server may have been deprecated but it will work the same way with NPS extension running on the Radius server.
Enable MFA on AWS Workspacesasked 3 months ago
No MFA device is assigned, still being requested to enter MFA Codeasked 2 months ago
Cognito set user MFA required when using TOTP onlyasked 6 months ago
MFA for Simple AD directoryasked 4 months ago
Azure Cloud MFA support for WorkspacesAccepted Answerasked 3 years ago
Workspaces MFA by SMSasked 4 years ago
Workspaces MFA setup problemasked 5 months ago
How do I require MFA for my Workmail Users?asked 9 months ago
Does Workspace support RSA SecurID as MFA?Accepted Answerasked 3 years ago
Adding MFA to Workspaces "failed" problemasked 5 months ago