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Microsoft Azure became generally available to customers in mainland China on March 27, 2014, through a locally operated service run by 21Vianet. This is not simply Azure Global hosted in another region: Microsoft describes Azure operated by 21Vianet as a physically separate China instance, built on Microsoft cloud technology and operated under a distinct local arrangement.
When did Azure launch in China?
Microsoft announced general availability on March 27, 2014. Its announcement said the service was operated by 21Vianet and reported that more than 3,000 customers were already using it at launch; that is Microsoft’s historical, company-reported figure, not a current customer count. Microsoft’s March 2014 announcement
In a 2022 retrospective, Microsoft said it had announced the service in 2012 and officially launched it in March 2014 with two initial regions. Microsoft characterized it as the first international public cloud service to become generally available in China; that “first” description is Microsoft’s claim. Microsoft’s 2022 retrospective
What does “operated by 21Vianet” mean?
Microsoft Learn identifies Shanghai Blue Cloud Technology Co., Ltd., a 21Vianet subsidiary, as the operator and transacting entity for Azure in China. In practical terms, “operated by 21Vianet” describes the local service operation and commercial arrangement; it does not mean Microsoft directly operates this China service. Microsoft supplies the underlying cloud technology, while the China instance is physically separate from its global cloud. Microsoft Learn: Azure operated by 21Vianet
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How Azure China differs from Azure Global
Azure China and Azure Global share Microsoft cloud technology, but they are separate environments. The distinction affects architecture and procurement, not just which region name appears in a deployment menu.
| What to compare | Azure operated by 21Vianet | What to check before deployment |
|---|---|---|
| Operator and commercial relationship | Shanghai Blue Cloud Technology Co., Ltd. is identified by Microsoft Learn as the operator and transacting entity. | Confirm the relevant contracting entity, terms, and support arrangements for your workload. |
| Physical environment and data location | Microsoft describes the instance as physically separate and located in China. | Review service-specific data handling information, your contract, and applicable obligations. |
| Services and features | Availability and feature support can differ from Azure Global; Microsoft’s documentation includes unsupported components for some Arc-enabled Kubernetes offerings. | Check the China service availability list and feature notes for each dependency. |
| Endpoints and identity | China uses distinct management, sign-in, storage, and service domains. | Configure applications, scripts, authentication, and integrations for the China environment rather than assuming global endpoints. |
| Pricing information | Microsoft provides China-specific retail rates and markup documentation. | Check current China pricing and contract terms; global pricing references may not apply. |
Microsoft’s Azure China operations overview and China availability and developer guidance are the practical starting points for checking these differences. Their service lists and documentation can change, so verify the exact services, features, and endpoints needed for a specific design.
Are Azure China and Azure Global connected?
They are separate cloud environments, not interchangeable regions in one global Azure deployment. Do not assume that a subscription, identity configuration, endpoint, automation script, or service integration set up for Azure Global will work unchanged in Azure China. Plan for environment-specific endpoints and verify any cross-environment connectivity or data movement against the services and terms that apply to your design.
Does Azure China keep customer data in China?
Microsoft describes Azure China as located in China and says customers control their customer data. Those statements address the service’s location and Microsoft’s description of customer control; they do not, by themselves, establish the data handling details for every service or workload. Check the applicable service documentation and contract for the data you plan to store or process. Microsoft Learn: Azure China operations and data
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What does Azure China’s compliance information establish?
Microsoft Learn says an assessment organization authorized by China’s Ministry of Public Security rated the service DJCP Level 3 against the cited GB/T 22239-2019 and GB/T 28448-2019 requirements. This is a scoped assessment statement, not blanket legal assurance for every customer, workload, or regulatory obligation. Confirm current certificates, the services and scope they cover, and your own legal and contractual requirements. Microsoft Learn: Azure China compliance
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which launch-era claims should not be treated as current terms?
Microsoft’s 2014 launch announcement described an annual 99.95 percent enterprise-level SLA and up to six backup copies for geo-redundant hosting. These are historical launch statements, not evidence of current commitments or universal coverage. For a purchasing or resilience decision, use the current service-specific SLA, backup documentation, and contract. Microsoft’s March 2014 announcement
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What to verify before choosing Azure China
- Confirm the target environment. Decide whether the workload must run in the China-operated environment or in Azure Global; do not treat the two as a single regional deployment.
- Check service and feature support. Use Microsoft’s China service-availability documentation to validate every required service, feature, and dependency.
- Review application configuration. Identify China-specific management, login, storage, and service endpoints used by clients, pipelines, and integrations.
- Validate data and compliance scope. Map data flows to service documentation, current certificates, customer obligations, and contract terms.
- Confirm commercial details and commitments. Check current China-specific pricing, terms, and service-level documentation rather than relying on 2014 launch claims.
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