21Vianet

Overview

21Vianet was founded in 1996 and is headquartered in Beijing, a leading carrier-neutral internet infrastructure provider in China. The company operates 40+ data centers nationwide across Beijing, Shanghai, Guangzhou, and Shenzhen, and serves as the exclusive Microsoft Azure China operator, delivering Blue Cloud services — a key option for government/enterprise cloud adoption and regulated industries.

21Vianet runs on the twin engines of "carrier-neutral data centers" and "compliant cloud": on one side, multi-carrier BGP networks and full-lifecycle IDC services address traditional colocation needs; on the other, Azure China capabilities deliver cloud products consistent with the Microsoft ecosystem. For Chinese enterprises that need localized data compliance while using a mature cloud product suite, 21Vianet offers a differentiated path. When choosing a domestic cloud provider, refer to the cloud server pricing reference and the server selection guide.

Key Strengths

• Exclusive Azure China operation: As Microsoft's official cloud operations partner in China, it delivers an Azure-consistent product matrix while meeting local compliance requirements, backed by a 99.9% SLA.
• 40+ data centers: Multi-site layouts across core Chinese cities with multi-carrier BGP access deliver excellent domestic latency and stability.
• Complete compliance: ISO 27001, MLPS Level 3, and Trusted Cloud qualifications fit the cloud adoption needs of financial, government, and other regulated industries.
• Full-lifecycle IDC services: With 24/7 operations, from facility build-out, rack colocation, and network access to maintenance, enterprise infrastructure is delivered end to end.
• Enterprise SLA guarantee: A 99.9%+ availability commitment and dedicated support for government/enterprise customers suit critical workloads.

Product Ecosystem

Blue Cloud & Azure China Cloud Services

As the Azure China operator, it provides enterprise-grade compute, storage, database, AI, and hybrid cloud services that can coordinate with the global Azure ecosystem — ideal for enterprises needing a mature cloud ecosystem.

Data Centers & IDC Colocation

Rack colocation, bare metal, network interconnection, and facility operations for finance, government, and other industries, supporting full-lifecycle delivery from a single cabinet to a custom facility.

Blue Cloud CDN & Network Services

Domestic distribution and network acceleration, combined with CDN acceleration best practices, improve access for Chinese users.

Enterprise Value-Added Services

Security protection, backup/disaster recovery, professional operations, and consulting help enterprises build complete protection from infrastructure to applications.

Limitations

• Generally high pricing: Azure China pay-as-you-go and customized services are usually more expensive than second-tier domestic cloud vendors; budget-sensitive teams should evaluate carefully.
• Enterprise-focused: Self-service onboarding and the developer ecosystem are weaker than public clouds aimed directly at individuals/startups, raising the barrier for small teams.
• Real-name & ICP filing required: Domestic cloud services require real-name verification and ICP filing, so overseas users or pure export businesses cannot use them directly.
• Heavier processes: Business and ticket processes are heavier, and support responsiveness for individuals or small users is average.

Use Cases

• Government/enterprise & regulated cloud (★★★★★): Complete compliance plus Azure China capability fits finance, government, and healthcare scenarios.
• Low-latency domestic business (★★★★): 40+ data centers and multi-carrier BGP deliver stable domestic access.
• Enterprises deep in the Microsoft ecosystem (★★★★): Coordination with the global Azure system lowers migration costs.
• IDC colocation & facility build-out (★★★★): Mature rack colocation, bare metal, and full-lifecycle facility services.
• Individuals/startups (★★): Higher cost and onboarding barriers; consider more cost-effective domestic public clouds first.

Pricing

Note: Prices are references only; confirm current quotes on the official site and Azure China pricing. Enterprise services usually require business negotiation.

FAQ

• What is the relationship between 21Vianet and Azure China? 21Vianet is the exclusive Microsoft Azure China operations partner, delivering Azure cloud services that meet local compliance requirements; see the server selection guide.

• Is ICP filing required for domestic use? Yes. Domestic cloud services require real-name verification and ICP filing; overseas users or export businesses can consider filing-free overseas options, as covered in filing-free hosting options.

• Can overseas users access 21Vianet? Its services mainly target domestic enterprises and compliance scenarios; overseas access should add CDN acceleration or choose overseas nodes.

• Is it suitable for individual developers? Its products and processes target the government/enterprise market; individual developers should prefer lower-barrier public clouds, while enterprise needs can be discussed with the sales team.; see cloud server configuration guide.