{
  "id": "azure-container-registry-vs-amazon-ecr",
  "ids": [
    "azure-container-registry",
    "amazon-ecr"
  ],
  "title": "Azure Container Registry vs Amazon ECR: container images, artefacts and access control",
  "heading": "Azure Container Registry vs Amazon ECR",
  "kicker": "Software architecture comparison",
  "deck": "Azure Container Registry fits Azure container workflows; ECR fits AWS container workflows. Cross-cloud pulls are possible design choices, but authentication, network access and data transfer should be tested and costed explicitly.",
  "description": "Compare Azure Container Registry vs Amazon ECR for container images, artefacts and access control.",
  "answerHeading": "Which option fits the requirement?",
  "answer": "Azure Container Registry fits Azure container workflows; ECR fits AWS container workflows. Cross-cloud pulls are possible design choices, but authentication, network access and data transfer should be tested and costed explicitly.",
  "checkedAt": "2026-10-25",
  "researchTag": "Deployment, compatibility and cost scope",
  "researchLimit": "Official product material reviewed. Acceptance checks are proposed exercises, not completed product trials, performance measurements or reliability guarantees.",
  "datasetDescription": "Seven technical differences and four proposed acceptance checks for Azure Container Registry vs Amazon ECR.",
  "type": "workflow-buying",
  "sharedBuyingNeed": "Evaluate alternative approaches to container images, artefacts and access control.",
  "rows": [
    [
      "Cloud provider",
      "Microsoft Azure",
      "AWS"
    ],
    [
      "Primary storage scope",
      "Container images and OCI artefacts",
      "Container images and supported OCI artefacts"
    ],
    [
      "Repository context",
      "Azure container registries and repositories",
      "ECR repositories"
    ],
    [
      "Push and pull access",
      "Azure registry roles and authentication configuration",
      "AWS IAM and repository policies"
    ],
    [
      "Deployment ecosystem",
      "Azure container and build services",
      "AWS container and build services"
    ],
    [
      "Release check",
      "Validate image tags and digests",
      "Validate image tags and digests"
    ],
    [
      "Cost components",
      "Registry tier, storage, transfer and configured capabilities",
      "Stored images, data transfer and configured capabilities"
    ]
  ],
  "scenarios": [
    {
      "name": "Publish image",
      "question": "Can the team push an approved test image with its release tag?",
      "left": "With Azure Container Registry, push an approved test image with its release tag.",
      "right": "With Amazon ECR, push an approved test image with its release tag.",
      "note": "The expected repository and digest are recorded."
    },
    {
      "name": "Deployment pull",
      "question": "Can the team pull the image using the intended deployment identity?",
      "left": "With Azure Container Registry, pull the image using the intended deployment identity.",
      "right": "With Amazon ECR, pull the image using the intended deployment identity.",
      "note": "The identity can pull only approved repositories."
    },
    {
      "name": "Release traceability",
      "question": "Can the team record the image digest used by a test deployment?",
      "left": "With Azure Container Registry, record the image digest used by a test deployment.",
      "right": "With Amazon ECR, record the image digest used by a test deployment.",
      "note": "The deployed digest matches the approved build."
    },
    {
      "name": "Retention plan",
      "question": "Can the team review the proposed artefact retention arrangement?",
      "left": "With Azure Container Registry, review the proposed artefact retention arrangement.",
      "right": "With Amazon ECR, review the proposed artefact retention arrangement.",
      "note": "Required rollback images remain available."
    }
  ],
  "exampleTable": {
    "caption": "Proposed checks using authorised non-production resources. Record the actual account, region, version, configuration and observed outcome.",
    "headers": [
      "Requirement",
      "Proposed exercise",
      "Accept when"
    ],
    "rows": [
      [
        "Publish image",
        "Push an approved test image with its release tag.",
        "The expected repository and digest are recorded."
      ],
      [
        "Deployment pull",
        "Pull the image using the intended deployment identity.",
        "The identity can pull only approved repositories."
      ],
      [
        "Release traceability",
        "Record the image digest used by a test deployment.",
        "The deployed digest matches the approved build."
      ],
      [
        "Retention plan",
        "Review the proposed artefact retention arrangement.",
        "Required rollback images remain available."
      ]
    ]
  },
  "sections": [
    {
      "id": "scope-and-architecture",
      "title": "Scope and architecture",
      "paragraphs": [
        "Azure Container Registry fits Azure container workflows; ECR fits AWS container workflows. Cross-cloud pulls are possible design choices, but authentication, network access and data transfer should be tested and costed explicitly.",
        "A registry stores and distributes artefacts; it does not run the application. Check the required image and package formats, authentication method and deployment-system integration separately from container hosting."
      ],
      "links": [
        {
          "url": "https://azure.microsoft.com/en-us/products/container-registry/",
          "label": "Azure Container Registry product information"
        },
        {
          "url": "https://aws.amazon.com/ecr/",
          "label": "Amazon ECR product information"
        }
      ],
      "navLabel": "Architecture"
    },
    {
      "id": "cost-and-migration",
      "title": "Cost and migration planning",
      "paragraphs": [
        "For Azure Container Registry, include registry tier, storage, transfer and configured capabilities. For Amazon ECR, include stored images, data transfer and configured capabilities. Use the same workload and resilience assumptions, then confirm current vendor terms for the selected configuration.",
        "Publish a test image with the required tags, pull it through the deployment identity and verify the digest. Review retention, replication and scanning requirements separately instead of assuming that every registry setting transfers with an image copy."
      ],
      "navLabel": "Costs & migration"
    }
  ],
  "faqs": [
    {
      "question": "How should we choose between Azure Container Registry and Amazon ECR?",
      "answer": "Azure Container Registry fits Azure container workflows; ECR fits AWS container workflows. Cross-cloud pulls are possible design choices, but authentication, network access and data transfer should be tested and costed explicitly."
    },
    {
      "question": "Which costs belong in the comparison?",
      "answer": "For Azure Container Registry, include registry tier, storage, transfer and configured capabilities. For Amazon ECR, include stored images, data transfer and configured capabilities. Use the same workload and resilience assumptions, then confirm current vendor terms for the selected configuration."
    },
    {
      "question": "What should we validate before a production move?",
      "answer": "Publish a test image with the required tags, pull it through the deployment identity and verify the digest. Review retention, replication and scanning requirements separately instead of assuming that every registry setting transfers with an image copy."
    }
  ],
  "sources": [
    {
      "url": "https://azure.microsoft.com/en-us/products/container-registry/",
      "facts": "Official product scope, deployment and integration context used for container images, artefacts and access control."
    },
    {
      "url": "https://aws.amazon.com/ecr/",
      "facts": "Official product scope, deployment and integration context used for container images, artefacts and access control."
    }
  ],
  "relatedLinks": [
    {
      "path": "/categories/container-management/",
      "title": "Container Management software"
    },
    {
      "path": "/categories/cloud-devops/",
      "title": "Cloud Devops software"
    },
    {
      "path": "/guides/cloud-cost-checklist/",
      "title": "Cloud workload and cost checklist"
    }
  ]
}