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AWS acm documentation change

Service: acm · 2026-02-22 · Documentation low

File: acm/latest/userguide/private-certificates.title.md

Summary

Clarified private certificate validity (13 months) and added note about public certificate validity difference (198 days)

Security assessment

Documentation clarification about certificate type differences. No security features added or vulnerabilities addressed.

Diff

diff --git a/acm/latest/userguide/private-certificates.title.md b/acm/latest/userguide/private-certificates.title.md
index c8d447679..8195697e4 100644
--- a//acm/latest/userguide/private-certificates.title.md
+++ b//acm/latest/userguide/private-certificates.title.md
@@ -21 +21,5 @@ The specified signing algorithm family (RSA or ECDSA) must match the algorithm f
-  * **Expiration:** Each certificate is valid for 13 months (395 days). The end date of the signing CA certificate must exceed the end date of the requested certificate, or else the certificate request will fail.
+  * **Expiration:** Each private certificate is valid for 13 months (395 days). The end date of the signing CA certificate must exceed the end date of the requested certificate, or else the certificate request will fail.
+
+###### Note
+
+Private certificates have a longer validity period than public certificates. Public ACM certificates are valid for 198 days. For more information about public certificates, see [Request a public certificate in AWS Certificate Manager](./acm-public-certificates.html).