Hi, Claudio_N2N
Good day!
Thank you for posting to Microsoft Community. We are happy to assist you.
According to your description, Microsoft has not announced any plans to deprecate or discontinue the use of Per User MFA.
The announcement you mentioned is related to the management of authentication methods in MFA and SSPR policies, and the need to migrate to the Authentication methods policy in Azure Active Directory by 30 September 2025. This change is aimed at providing a more streamlined and consistent approach to managing authentication methods across Microsoft products and services. Rest assured that Per User MFA will continue to be supported and available for use.
Thanks for your precious time and your understanding would be highly appreciated.
Hope you all the best!
Sincerely,
Alex | Microsoft Community Moderator.