Concise summaries of official AWS update announcements for Amazon ECR.
Information as of November 3, 2026.
Amazon ECR now supports replication backfill, allowing customers to replicate existing images to configured destinations with a single API call. Up to ten backfill jobs can run concurrently.
Amazon ECR has increased the maximum number of replication rules per registry from 10 to 25, allowing more flexible replication strategies for multi-region and multi-account architectures.
Amazon ECR increases the maximum image layer size to 200 GB for images pushed via Docker push, eliminating the need to split data across multiple layers or use external storage for large language models, genomics datasets, or large binary dependencies
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