Your company’s legal department has issued a litigation hold that requires you to preserve all...

To preserve all data related to the project, including emails, documents, and chats, and to prevent it from being deleted by users, you should create a hold in Google Vault. A hold ensures that data is preserved indefinitely, regardless of user actions, and applies to the users and data sources (such as Gmail, Drive, and Chats) associated with the project. This is the most efficient and compliant way to meet the litigation hold requirements.