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Copy file name to clipboardExpand all lines: articles/search/search-create-service-portal.md
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ms.service: azure-ai-search
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ms.update-cycle: 180-days
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ms.topic: how-to
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ms.date: 07/31/2025
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ms.date: 08/08/2025
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ms.custom:
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- references_regions
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- build-2024
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1. Do you have a specific tier in mind? Check [region availability by tier](search-sku-tier.md#region-availability-by-tier).
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1. Do you have business continuity and disaster recovery (BCDR) requirements? Create two or more search services in [regional pairs](/azure/reliability/cross-region-replication-azure#azure-paired-regions), each with two or more replicas for [availability zones](search-reliability.md#availability-zone-support). For example, if you're operating in North America, you might choose East US and West US, or North Central US and South Central US, for each search service.
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1. Do you have business continuity and disaster recovery (BCDR) requirements? Create two or more search services in [regional pairs](/azure/reliability/cross-region-replication-azure#azure-paired-regions), each with two or more replicas for [availability zones](/azure/reliability/reliability-ai-search#availability-zone-support). For example, if you're operating in North America, you might choose East US and West US, or North Central US and South Central US, for each search service.
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1. Do you need [AI enrichment](cognitive-search-concept-intro.md), [integrated data chunking and vectorization](vector-search-integrated-vectorization.md), or [multimodal search](multimodal-search-overview.md)? For [billing purposes](cognitive-search-attach-cognitive-services.md), Azure AI Search and Azure AI services multi-service must coexist in the same region.
Copy file name to clipboardExpand all lines: articles/search/search-how-to-upgrade.md
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ms.service: azure-ai-search
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ms.topic: how-to
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ms.custom: references_regions
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ms.date: 07/07/2025
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ms.date: 08/08/2025
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---
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# Upgrade your Azure AI Search service in the Azure portal
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You can't undo a service upgrade. Before you proceed, make sure that you want to permanently increase the [storage limit](#higher-storage-limits) and [vector index size](#higher-vector-limits) of your search service. We recommend that you test this operation in a nonproduction environment.
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The availability of your search service during an upgrade depends on how many replicas you've provisioned. With two or more replicas, your service remains available while one replica is updated. For more information, see [Reliability in Azure AI Search](search-reliability.md).
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The availability of your search service during an upgrade depends on how many replicas you've provisioned. With two or more replicas, your service remains available while one replica is updated. For more information, see [Reliability in Azure AI Search](/azure/reliability/reliability-ai-search).
Copy file name to clipboardExpand all lines: articles/search/search-multi-region.md
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ms.author: haileytapia
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ms.service: azure-ai-search
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ms.topic: conceptual
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ms.date: 07/11/2025
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ms.date: 08/08/2025
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---
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# Multi-region deployments in Azure AI Search
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This article describes the components of a multi-region solution, which relies on your custom script or code to handle failover if a service becomes unavailable.
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For more information about the reliability features of Azure AI Search, including intra-regional resiliency via availability zones, see [Reliability in Azure AI Search](search-reliability.md).
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For more information about the reliability features of Azure AI Search, including intra-regional resiliency via availability zones, see [Reliability in Azure AI Search](/azure/reliability/reliability-ai-search).
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## Why use multiple regions?
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The following diagram illustrates a geo-distributed set of search services:
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:::image type="content" source="media/search-reliability/geo-redundancy.png" alt-text="Diagram that shows a cross-tab view of services by region." border="true" lightbox="media/search-reliability/geo-redundancy.png":::
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:::image type="content" source="media/search-multi-region/geo-redundancy.png" alt-text="Diagram that shows a cross-tab view of services by region." border="true" lightbox="media/search-multi-region/geo-redundancy.png":::
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> [!TIP]
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> For a complete implementation, see the [Bicep sample](https://github.com/Azure-Samples/azure-search-multiple-regions) on GitHub. The sample deploys a fully configured, multi-region search solution that can be modified to your regions and indexing strategies.
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The following diagram illustrates this architecture:
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:::image type="content" source="media/search-reliability/scale-indexers.png" alt-text="Diagram of a single data source with distributed indexer and service combinations." border="true" lightbox="media/search-reliability/scale-indexers.png":::
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:::image type="content" source="media/search-multi-region/scale-indexers.png" alt-text="Diagram of a single data source with distributed indexer and service combinations." border="true" lightbox="media/search-multi-region/scale-indexers.png":::
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---
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The following diagram illustrates search apps connecting through Traffic Manager:
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:::image type="content" source="media/search-reliability/azure-function-search-traffic-mgr.png" alt-text="Diagram of search apps connecting through Azure Traffic Manager." border="true" lightbox="media/search-reliability/azure-function-search-traffic-mgr.png":::
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:::image type="content" source="media/search-multi-region/azure-function-search-traffic-mgr.png" alt-text="Diagram of search apps connecting through Azure Traffic Manager." border="true" lightbox="media/search-multi-region/azure-function-search-traffic-mgr.png":::
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> [!TIP]
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> Azure AI Search provides a [multi-region Bicep sample](https://github.com/Azure-Samples/azure-search-multiple-regions) that uses Traffic Manager for request redirection when the primary endpoint fails. This solution is useful for routing to a search-enabled client that only calls a search service in the same region.
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## Related content
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+[Reliability in Azure AI Search](search-reliability.md)
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+[Reliability in Azure AI Search](/azure/reliability/reliability-ai-search)
Copy file name to clipboardExpand all lines: articles/search/search-region-support.md
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author: haileytap
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ms.author: haileytapia
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manager: nitinme
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ms.date: 07/31/2025
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ms.date: 08/08/2025
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ms.service: azure-ai-search
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| Feature | Description | Availability |
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|---------|-------------|--------------|
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|[AI enrichment](cognitive-search-concept-intro.md)| Refers to [built-in skills](cognitive-search-predefined-skills.md) that make internal calls to Azure AI for enrichment and transformation during indexing. Integration requires that Azure AI Search coexists with an [Azure AI services multi-service account](/azure/ai-services/multi-service-resource#azure-ai-services-resource-for-azure-ai-search-skills) in the same physical region. You can bypass region requirements by using [identity-based connections](cognitive-search-attach-cognitive-services.md#bill-through-a-keyless-connection), currently in public preview. | Regional support is noted in this article. |
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|[Availability zones](search-reliability.md#availability-zone-support)| Divides a region's data centers into distinct physical location groups, providing high availability within the same geo. | Regional support is noted in this article. |
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|[Availability zones](/azure/reliability/reliability-ai-search#availability-zone-support)| Divides a region's data centers into distinct physical location groups, providing high availability within the same geo. | Regional support is noted in this article. |
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|[Agentic retrieval](search-agentic-retrieval-concept.md)| Takes a dependency on semantic ranker, which is another premium feature. | Regional support is noted in this article. |
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|[Semantic ranker](semantic-search-overview.md)| Takes a dependency on Microsoft-hosted models in specific regions. | Regional support is noted in this article. |
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|[Query rewrite](semantic-how-to-query-rewrite.md)| Takes a dependency on Microsoft-hosted models in specific regions. | Regional support is noted in this article. |
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