Azure SignalR Service
Application server software
Web server accelerator software
Web accelerator software
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¥16.38 per unit per day
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What is Azure SignalR Service
Azure SignalR Service is a managed real-time messaging service that provides bi-directional communication between servers and connected clients using the SignalR protocol. It is used by development teams building web and mobile applications that need live updates such as chat, notifications, dashboards, and collaborative features. The service offloads connection management, scaling, and message fan-out to Azure while integrating with common application frameworks (notably ASP.NET Core SignalR). It is typically deployed alongside an application backend rather than acting as a general-purpose web server or CDN.
Managed connection scaling
The service manages large numbers of persistent client connections and handles scale-out without requiring customers to operate their own real-time gateway layer. It reduces the operational work associated with connection lifecycles, backplane configuration, and fan-out. This is particularly relevant for workloads where a traditional application server alone is not optimized for long-lived WebSocket-style connections.
Tight Azure ecosystem integration
Azure SignalR Service integrates with Azure identity, networking, monitoring, and deployment workflows commonly used in Azure-hosted applications. It supports typical Azure operational patterns such as centralized logging/metrics and resource-based access control. For teams already standardizing on Azure, this can simplify architecture compared with self-managed real-time components.
SignalR developer experience
It aligns with the SignalR programming model, including hubs and client libraries, which can speed implementation for teams using ASP.NET Core. The service supports common real-time patterns such as group messaging and broadcast. This can reduce custom protocol work compared with building real-time messaging directly on top of raw WebSockets.
Azure and SignalR coupling
The service is specific to Azure and the SignalR ecosystem, which can increase switching costs for organizations pursuing cloud-agnostic architectures. Applications may need refactoring if moved to a different cloud or to a self-hosted real-time stack. This is a different portability profile than running a self-managed web/application server on any infrastructure.
Not a web acceleration layer
Despite being used in web applications, it does not function as a general web server accelerator or CDN for static/dynamic HTTP content. It focuses on real-time messaging and connection management rather than caching, TLS termination for general traffic, or request routing optimization. Organizations still typically require separate components for web acceleration and edge delivery.
Service limits and pricing sensitivity
Capacity planning depends on service tiers, connection/message limits, and regional availability, which can constrain certain high-throughput or bursty workloads. Costs can rise with sustained concurrent connections and message volume compared with self-managed infrastructure in some scenarios. Teams may need load testing and careful sizing to avoid unexpected throttling or spend.
Plan & Pricing
| Plan | Price (region: Azure China, currency: CNY) | Key features & notes |
|---|---|---|
| Free | ¥0 (Free) | 20 concurrent connections per unit; 20,000 messages/unit/day; max 1 unit. |
| Standard | ¥16.38 per unit/day | 1,000 concurrent connections per unit; included 1,000,000 messages/unit/day; additional messages purchasable; max 100 units. |
| Premium | ¥20.346 per unit/day (instance scale <= 100 units) | 1,000 concurrent connections per unit; unlimited messages (first 1,000,000 messages/unit/day free); availability zone support, fully managed autoscaling, custom domain, geo-replication; max 100 units. |
Additional messages: ¥10.176 per million messages (Azure China pricing page).
Seller details
Microsoft Corporation
Redmond, Washington, United States
1975
Public
https://www.microsoft.com/
https://x.com/Microsoft
https://www.linkedin.com/company/microsoft/
