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This article identifies the cloud regions in which Azure AI Search is available. It also lists which premium features are available in each region.
Features subject to regional availability
When you create an Azure AI Search service, your region selection might depend on features that are only available in certain regions. The following table lists those region-specific features.
| Feature | Description | Availability |
|---|---|---|
| AI enrichment | Refers to built-in skills 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 in the same physical region. You can bypass region requirements by using identity-based connections, currently in public preview. | Regional support is noted in this article. |
| Availability zones | 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. |
| Semantic ranker | Takes a dependency on Microsoft-hosted models in specific regions. | Regional support is noted in this article. |
| Query rewrite | Takes a dependency on Microsoft-hosted models in specific regions. | Regional support is noted in this article. |
| Extra capacity | Higher-capacity partitions became available in select regions starting in April 2024, with a second wave following in May 2024. Currently, there are just a few regions that don't offer higher-capacity partitions. Otherwise, create a new search service to benefit from more capacity at the same billing rate. |
Regional support is noted in the footnotes of this article. |
Azure Public regions
You can create an Azure AI Search service in any of the following Azure public regions. Almost all of these regions support higher-capacity tiers. Exceptions are noted where they apply.
AI enrichment refers to internal connections to an Azure AI services multi-service account and doesn't include Azure OpenAI integration.
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| Region | AI enrichment | Availability zones | Agentic retrieval | Semantic ranker | Query rewrite |
|---|---|---|---|---|---|
| China East | |||||
| China East 2 1 | ✅ | ||||
| China East 3 | |||||
| China North | |||||
| China North 2 1 | |||||
| China North 3 | ✅ | ✅ | ✅ | ✅ |
1 Higher storage limits aren't available in this region. If you want higher limits, choose a different region.