1. Microsoft Entra documentation
"What is Microsoft Entra Pass-through Authentication?"
Section: "Key benefits of using Microsoft Entra Pass-through Authentication": This section explicitly states
"User sign-in requests are validated directly against your on-premises Active Directory. As a result
you can enforce your on-premises password and account lockout policies." This directly supports the requirement to enforce on-premises policies.
2. Microsoft Entra documentation
"Choose the right authentication method for your Microsoft Entra hybrid identity solution"
Table: "Compare methods": The table shows that Pass-through Authentication "Enforces on-premises Active Directory account policies
such as account lockouts
password expiration
and permitted sign-in hours." In contrast
Password Hash Synchronization does not offer this real-time enforcement for sign-in.
3. Microsoft Entra documentation
"How does self-service password reset writeback work in Microsoft Entra ID?"
Section: "Supported operations": This document confirms that password writeback
a key component of SSPR for hybrid identities
is supported for users synchronized via Microsoft Entra Connect who are using Pass-through authentication or Password hash synchronization. This confirms PTA meets the SSPR requirement.