Microsoft has released file-level archiving for Microsoft 365 Archive in public preview on March 30, 2026. The feature lets you move individual files in SharePoint document libraries to a low-cost cold storage tier while the rest of the site remains fully active. This builds on site-level archiving, which has been generally available since May 2024. General availability of Microsoft 365 Archive file-level archiving is targeted for July 2026. Policy-based automation for automatic archiving is planned for late 2026.

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