You synchronize on-premises identities to Azure AD and must prevent users whose givenName attribute begins with TEST from being synchronized. The solution should require minimal administrative effort. Which tool should you use?

The Synchronization Rules Editor is the correct tool because it allows you to create or modify inbound and outbound synchronization rules, including attribute-based filtering rules. You can define a scoping filter to exclude users based on the givenName attribute starting with "TEST," directly preventing their synchronization to Azure AD. This method is efficient and requires minimal administrative effort once configured. The Web Service Configuration Tool is used for advanced scenarios like configuring a custom connector, not for attribute filtering. The Azure AD Connect wizard is used for initial installation and basic configuration but lacks the granular control for attribute-level filtering. Active Directory Users and Computers is an on-premises tool for managing Active Directory objects and does not control synchronization to Azure AD.