A legal department needs to preserve all communications related to an ongoing lawsuit. They identify specific users and require that their mailbox items and OneDrive files are not altered or deleted. Which Microsoft Purview feature should be used?
Litigation Hold is the correct mechanism because it places a preservation hold on an entire mailbox and OneDrive for Business site in-place, preventing items from being permanently deleted or altered. Every version of a document and every mailbox item, including deleted items and items edited by users, is retained in the Recoverable Items folder until the hold is released. Deletion by users, as well as cleanup by retention policies, is blocked for held content, ensuring all communications related to the legal matter remain discoverable in their original location.
Why this answer
Litigation Hold is the correct feature because it preserves all mailbox items and OneDrive files for specific users in their current state, preventing any alteration or deletion by users or automated processes. This is essential for legal holds where data must be immutable for eDiscovery purposes, and it applies at the user level rather than broadly across the organization.
Exam trap
The trap here is that candidates often confuse retention policies with litigation holds, thinking retention policies can preserve data indefinitely, but retention policies allow deletion after the retention period and do not block user-initiated edits or deletions during the policy's active duration.
How to eliminate wrong answers
Option B (Retention Policy) is wrong because retention policies are designed for managing data lifecycle and can delete or archive items after a specified period, but they do not prevent users from modifying or deleting content while the policy is active; litigation hold explicitly locks content. Option C (Data Loss Prevention) is wrong because DLP focuses on preventing sensitive data from being shared or leaked through rules and policies, not on preserving data from alteration or deletion. Option D (eDiscovery) is wrong because eDiscovery is a tool for searching, holding, and exporting data as part of legal investigations, but it is not a hold feature itself; litigation hold is the underlying mechanism that eDiscovery uses to preserve content.