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AWS AmazonECR documentation change

Service: AmazonECR · 2026-01-22 · Documentation low

File: AmazonECR/latest/userguide/image-push.md

Summary

Added blob mounting behavior during image pushes

Security assessment

Explains automatic layer deduplication during push operations. While efficiency-related, no security vulnerabilities or security features are documented. Changes are operational.

Diff

diff --git a/AmazonECR/latest/userguide/image-push.md b/AmazonECR/latest/userguide/image-push.md
index 836240351..77accf733 100644
--- a//AmazonECR/latest/userguide/image-push.md
+++ b//AmazonECR/latest/userguide/image-push.md
@@ -9 +9 @@ You can push your Docker images, manifest lists, and Open Container Initiative (
-Amazon ECR also provides a way to replicate your images to other repositories. By specifying a replication configuration in your private registry settings, you can replicate across Regions in your own registry and across different accounts. For more information, see [Private registry settings in Amazon ECR](./registry-settings.html).
+Amazon ECR provides a way to replicate your images to other repositories. By specifying a replication configuration in your private registry settings, you can replicate across Regions in your own registry and across different accounts. For more information, see [Private registry settings in Amazon ECR](./registry-settings.html).
@@ -14,0 +15,2 @@ If you push an image that is currently archived, that image will be automaticall
+When registry blob mounting is enabled and mounting parameters are included, Amazon ECR automatically checks for existing layers in your registry during push operations. If a layer already exists in another repository within the same registry, Amazon ECR will mount the existing layer instead of uploading a duplicate. For more information, see [Blob mounting in Amazon ECR](./blob-mounting.html).
+