While the introduction of threshold-based Auto-Archiving in Exchange Online is technically sound and may help prevent mailbox overages, the real issue is not the change itself—but the limited time organizations are being given to prepare.
Many companies have already established well-defined archiving policies tailored to their compliance requirements, industry regulations, and internal audit frameworks. These policies are the result of years of strategic planning and governance.
Rolling out a non-optional feature with minimal lead time risks disrupting carefully managed data retention strategies. Organizations need time to assess the impact, align it with existing controls, and ensure that no compliance or operational risks are introduced.
A more collaborative rollout with extended notice and configuration flexibility would better support enterprise readiness.