Update to Microsoft Enterprise Content Delivery Network (eCDN) analytics data retention (360 days to 180 days)

[What and Why:]

We are updating the data retention period for Microsoft Enterprise Content Delivery Network (eCDN) analytics from 360 days to 180 days. This change aligns with enterprise-ready data governance practices across Microsoft 365, helping organizations maintain compliance while ensuring analytics data is retained for a duration appropriate for operational insights and reporting needs.

[Rollout Schedule:]

• Effective date (Worldwide, GCC, GCC High): July 27, 2026

[Impact on Your Organization:]

Who is affected: Admins and users who rely on Microsoft eCDN analytics reporting

Platforms/Services: Microsoft eCDN analytics (web-based reporting and dashboards)

What will happen:

• Analytics data will be retained for up to 180 days from the time of generation.
• Data older than 180 days will be automatically deleted and no longer accessible.
• The updated retention policy will apply tenant-wide.
• There are no changes to how data is collected or surfaced, only how long it is retained.
• The change is enabled by default with no admin configuration required.

[Action Required / Recommendations:]

No immediate action is required.

• Review any reporting or analytics workflows that rely on data older than 180 days.
• Update internal processes or dashboards to ensure necessary data is exported or archived before July 27, 2026.
• Notify stakeholders who depend on long-term analytics trends.
• Update internal documentation or reporting guidelines as needed.

[Compliance considerations:]

Area	Explanation
Data processing, storage, or access changes	The retention period for eCDN analytics data is reduced from 360 days to 180 days, changing how long data is stored and accessible.
Retention policies, holds, or deletion workflows	The change enforces a shorter system-level retention window, resulting in earlier automatic deletion of analytics data.
Admin monitoring and compliance reporting	Admins will have access to a shorter historical analytics window, which may affect long-term reporting and compliance evidence collection.