External sharing controls, sensitivity labels, DLP, conditional access, audit, and lifecycle for SharePoint document libraries. The 2026 enterprise reference.
The Preservation Hold Library silently inflates SharePoint storage. Replace it with Squirrel Recycle Bin Capture for compliant retention in customer-owned Azure.
Retention policies apply to locations. Retention labels apply to items. Both live in Microsoft Purview, both retain content, and admins regularly use the wrong one. What each actually does and when to use which.
Sensitivity vs retention labels in SharePoint - what each actually does, when to use which, the audit failure modes when admins confuse them, and what survives when content is archived.
Microsoft Copilot cannot see archived SharePoint content in either Microsoft 365 Archive or standard third-party archives. Here's why - and how to close the gap.