--- title: Amazon ECR now supports replication backfill for... description: Amazon ECR now supports replication backfill, letting you replicate existing container images to configured replication destinations with a single API call.... canonical: https://daily.dev/posts/amazon-ecr-now-supports-replication-backfill-for-existing-container-images-q2yxilcmx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Amazon ECR now supports replication backfill for existing container images | daily.dev og:description: Amazon ECR now supports replication backfill, letting you replicate existing container images to configured replication destinations with a single API call.... og:url: https://daily.dev/posts/amazon-ecr-now-supports-replication-backfill-for-existing-container-images-q2yxilcmx og:image: https://api.daily.dev/og/posts/q2yXilcMX.png og:image:alt: Amazon ECR now supports replication backfill for existing container images og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Amazon ECR now supports replication backfill for existing container images **[AWS](https://daily.dev/sources/aws)** · 1 min read · 0 upvotes · 0 comments ## Summary Amazon ECR now supports replication backfill, letting you replicate existing container images to configured replication destinations with a single API call. Previously replication only applied to images pushed after the configuration was enabled, forcing manual retagging to replicate older images. The feature helps when expanding to a new AWS Region, testing disaster recovery, or meeting compliance requirements for complete image catalogs. You can run up to ten backfill jobs concurrently, track progress and per-image results through new APIs, and stop a job anytime without deleting already-replicated images. It's available in all AWS Regions where ECR is available. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How do I replicate existing container images in Amazon ECR to another region, not just new pushes? Use the new replication backfill feature, which replicates existing images in your private registry to configured replication destinations with a single API call. Previously, replication only applied to images pushed after the replication configuration was enabled, so older images required manual retagging to trigger replication. _Teams planning multi-region container strategies can follow infrastructure updates like this on daily.dev._ ### How many Amazon ECR replication backfill jobs can I run at the same time? You can run up to ten backfill jobs concurrently. You can also monitor progress and per-image results through new APIs, and stop a job at any time without deleting images that have already finished replicating. _Those tuning disaster recovery setups can track AWS infrastructure changes like this on daily.dev._ ## Similar posts on daily.dev - [Amazon ECR introduces archive storage class for rarely accessed container images](https://daily.dev/posts/amazon-ecr-introduces-archive-storage-class-for-rarely-accessed-container-images-rfgxzdqgg) · AWS · 0 upvotes · 0 comments - [AWS Introduces Remote Build Cache in ECR to Accelerate Docker Image Builds](https://daily.dev/posts/aws-introduces-remote-build-cache-in-ecr-to-accelerate-docker-image-builds-dc8dqcb5c) · InfoQ · 0 upvotes · 0 comments - [Amazon ECR now supports pull through cache for Chainguard](https://daily.dev/posts/amazon-ecr-now-supports-pull-through-cache-for-chainguard-ci33mvca3) · AWS · 1 upvotes · 0 comments - [Amazon ECR now supports image layers up to 200 GB](https://daily.dev/posts/amazon-ecr-now-supports-image-layers-up-to-200-gb-eri1dqxna) · AWS · 0 upvotes · 1 comments --- Tags: [#aws](https://daily.dev/tags/aws), [#docker](https://daily.dev/tags/docker), [#containers](https://daily.dev/tags/containers) [View this post on daily.dev](https://daily.dev/posts/amazon-ecr-now-supports-replication-backfill-for-existing-container-images-q2yxilcmx) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Amazon ECR now supports replication backfill for existing container images","url":"https://daily.dev/posts/amazon-ecr-now-supports-replication-backfill-for-existing-container-images-q2yxilcmx","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/amazon-ecr-now-supports-replication-backfill-for-existing-container-images-q2yxilcmx"},"datePublished":"2026-10-27T14:08:05.962Z","dateModified":"2026-10-27T14:12:45.420Z","description":"Amazon ECR now supports replication backfill, letting you replicate existing container images to configured replication destinations with a single API call....","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/a4439e35aa5c6c468b9b7c932eea9006?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/a4439e35aa5c6c468b9b7c932eea9006?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"AWS","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"AWS","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/aws","url":"https://daily.dev/sources/aws"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/amazon-ecr-now-supports-replication-backfill-for-existing-container-images-q2yxilcmx","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"aws,docker,containers","timeRequired":"PT1M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"AWS","item":"https://daily.dev/sources/aws"},{"@type":"ListItem","position":3,"name":"Amazon ECR now supports replication backfill for existing container images"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/amazon-ecr-now-supports-replication-backfill-for-existing-container-images-q2yxilcmx#faq","mainEntity":[{"@type":"Question","name":"How do I replicate existing container images in Amazon ECR to another region, not just new pushes?","acceptedAnswer":{"@type":"Answer","text":"Use the new replication backfill feature, which replicates existing images in your private registry to configured replication destinations with a single API call. 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