Microsoft Azure Security Technologies

The Global administrator role is required to enable and manage Azure AD Privileged Identity Management (PIM). This role has the highest level of privilege in Azure AD and allows a user to configure, manage, and implement PIM settings and assignments. This role gives the necessary permissions to perform all administrative functions, including those related to PIM.

The recommended use of pass-through authentication and seamless Single Sign-On (SSO) with password hash synchronization does meet the goal of ensuring that password policies and user logon limitations affect user accounts that are synced to the Azure AD tenant. Pass-through authentication ensures that user sign-ins are validated directly against the on-premises Active Directory, thereby enforcing on-premises password policies and account restrictions. Seamless SSO improves user experience by allowing users to automatically sign in when they are on their corporate devices connected to the corporate network. Password hash synchronization can provide redundancy and support for features like Azure AD Identity Protection without the need for additional infrastructure components, thereby reducing the number of necessary servers.

Federation with Active Directory Federation Services (AD FS) requires multiple servers for setup and maintenance, including AD FS servers and Web Application Proxy (WAP) servers. This solution does not satisfy the requirement of reducing the number of necessary servers. Additionally, AD FS handles authentication externally, which may complicate enforcement of password policies and user logon limitations directly in Azure AD. Therefore, this solution does not meet the goal of integrating Active Directory and the Azure AD tenant while maintaining password policies, user logon limitations, and minimizing the number of servers required.

The solution does not meet the goal because password hash synchronization and seamless Single Sign-On (SSO) do not fully enforce the password policies and user logon limitations from the on-premises Active Directory. Although password hash synchronization can enforce password complexity and expiration policies to some extent, it does not support specific logon limitations like time-based logons or other advanced restrictions. To ensure full enforcement of these policies, pass-through authentication (PTA) would be required, as it allows for real-time validation of users' passwords against the on-premises Active Directory. Therefore, recommending only password hash synchronization and seamless SSO is not sufficient for the stated requirements.

To prevent users with a givenName attribute starting with LAB from syncing to Azure AD, you should use the Synchronization Rules Editor to create an attribute-based filtering rule. This tool allows you to create custom synchronization criteria based on specific attributes of the users, which fits the requirement stated in the question.