AWS transfer documentation change

Service: transfer · 2025-08-16 · Documentation medium

File: transfer/latest/userguide/as2-monitoring.md

Summary

Added DaysUntilExpiry metric documentation for certificate expiration monitoring

Security assessment

Introduces monitoring for certificate expiration - a security best practice, but does not address a specific existing vulnerability. Helps prevent outages from expired certificates.

Diff

diff --git a/transfer/latest/userguide/as2-monitoring.md b/transfer/latest/userguide/as2-monitoring.md
index b8a5b2f35..4b69f1b8a 100644
--- a//transfer/latest/userguide/as2-monitoring.md
+++ b//transfer/latest/userguide/as2-monitoring.md
@@ -16,0 +17 @@ AS2 metrics Metric | Description
+`DaysUntilExpiry` |  The number of days until a Certificate expires determined by the `InactiveDate` set on the Certificate when importing. Units: Count Dimensions: `CertificateId`, `Description` (if provided) Period: 1 day For more information, see [AS2 certificate rotation](./managing-as2-partners.html#as2-certificate-rotation).  
@@ -135 +136 @@ Custom HTTP Headers for AS2
-Managing file-processing workflows
+Certificate expiration monitoring