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learn-pr/wwl-azure/implement-resilient-ai-ready-infrastructure/includes/4-deploy-azure-container-registry-replication.md

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## Registry tier selection for production workloads
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Azure Container Registry offers three service tiers with different capabilities and cost structures. Basic tier provides 10 GB of included storage and costs approximately $5 per month plus more storage and egress charges, suitable for individual developers experimenting with small model containers in a single region. Basic registries don't support geo-replication, so they can't participate in multi-region resilience strategies—you must maintain separate registries in each region and manually push images to all of them, increasing deployment complexity and the risk of version mismatches between regions.
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Azure Container Registry offers three service tiers with different capabilities and cost structures. Basic tier provides 10 GB of included storage with storage and egress charges, suitable for individual developers experimenting with small model containers in a single region. Basic registries don't support geo-replication, so they can't participate in multi-region resilience strategies—you must maintain separate registries in each region and manually push images to all of them, increasing deployment complexity and the risk of version mismatches between regions.
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:::image type="content" source="../media/standard-tier-increase-storage-costs.png" alt-text="Diagram of how Standard tier increases storage to 100 GB with costs approximately $20 monthly.":::
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:::image type="content" source="../media/standard-tier-increase-storage-costs.png" alt-text="Diagram of how Standard tier increases storage to 100 GB.":::
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Standard tier increases included storage to 100 GB and costs approximately $20 monthly with the same storage and egress overage charges, appropriate for team development and testing environments where multiple developers share container images but don't need cross-region distribution. Like Basic tier, Standard lacks geo-replication support, making it unsuitable for production multi-region deployments where automatic synchronization is required to maintain consistency across regional hubs.
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Standard tier increases included storage to 100 GB with the same storage and egress overage charges, appropriate for team development and testing environments where multiple developers share container images but don't need cross-region distribution. Like Basic tier, Standard lacks geo-replication support, making it unsuitable for production multi-region deployments where automatic synchronization is required to maintain consistency across regional hubs.
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Premium tier unlocks geo-replication along with 500 GB of included storage, content trust for image signing, and private link support for network isolation. The base cost is approximately $167 per month plus storage overages and replication bandwidth between regions. At the same time, Premium tier provides free egress within the same region for replicated images, meaning your West US compute clusters don't incur bandwidth charges when pulling from the West US replica—this can offset the higher base cost for workloads that frequently deploy or update container images. Organizations deploying production AI infrastructure across multiple regions should default to Premium tier because the geo-replication capability becomes essential for maintaining availability during regional failures.
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Premium tier unlocks geo-replication along with 500 GB of included storage, content trust for image signing, and private link support for network isolation. At the same time, Premium tier provides free egress within the same region for replicated images, meaning your West US compute clusters don't incur bandwidth charges when pulling from the West US replica—this can offset the higher base cost for workloads that frequently deploy or update container images. Organizations deploying production AI infrastructure across multiple regions should default to Premium tier because the geo-replication capability becomes essential for maintaining availability during regional failures.
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## Configuring geo-replication for model distribution
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- [Azure Container Registry geo-replication](/azure/container-registry/container-registry-geo-replication) - Configuration guide for enabling multi-region replication with Premium tier registries
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- [ACR service tiers comparison](/azure/container-registry/container-registry-skus) - Detailed feature and pricing comparison across Basic, Standard, and Premium tiers
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