Service Bus

Reliable cloud messaging as a service (MaaS) and simple hybrid integration

  • Build reliable and elastic cloud apps with messaging
  • Protect your application from temporary spikes in traffic
  • Decouple your applications from each other
  • Connect your existing on-premises systems to cloud solutions
  • Distribute messages to multiple independent back-end systems
  • Scale out ordered messaging to multiple readers

Simplify enterprise cloud messaging

Depend on Azure Service Bus when you need highly-reliable cloud messaging service between applications and services, even when one or more is offline. Available in every Azure region, this fully-managed service eliminates the burdens of server management and licensing. Asynchronous operations give you flexible, brokered messaging between client and server, along with structured first-in, first-out (FIFO) messaging, and publish/subscribe capabilities—excellent for tasks like order processing.

Build scalable cloud solutions

Asynchronous messaging patterns are the cornerstone of durable applications—they give you the power to scale reliably. Integrate cloud resources such as Azure SQL Database, Azure Storage, and Web Apps, with Service Bus messaging to get smooth operation under variable loads, and the durability to survive intermittent failures.

Implement complex messaging workflows

Build durable messaging topologies with complex routing and increase overall availability. Use Service Bus to deliver messages to multiple subscribers and fan out message delivery at scale to downstream systems.

Enable highly-secure communication across hybrid cloud solutions

Access existing assets—wherever they are—without complex firewall, network, or VPN configuration, and use the Hybrid Connections feature within Service Bus Relay. These services give you enhanced authentication and connectivity through the cloud, and the ability to see and monitor activity.

Easily allow multiple apps to share one connection

Keep your data where it is on-premises, and use the Hybrid Connections feature within Service Bus Relay to enable access from the cloud or anywhere through a single, secure connection.

Why trust Service Bus?

  • Microsoft invests more than USD 1 billion annually on cybersecurity research and development.

  • We employ more than 3,500 security experts completely dedicated to your data security and privacy.

  • Azure has more compliance certifications than any other cloud provider. View the comprehensive list.

Service Bus pricing

  • No upfront cost
  • No termination fees
  • Pay only for what you use


Watch this webinar to learn how to use Azure Service Bus and other Azure services for integration.


Application integration often requires connecting multiple independent systems, often in complex ways. Read this whitepaper to learn how API Management, Logic Apps, Service Bus, and Event Grid work together to provide a complete solution for integrating both cloud and on-premises applications.

Everything you need to get started

Get instant access and a $200 credit by signing up for a free Azure account.

Learn how to use Service Bus with 5-minute quickstart tutorials and documentation.

Enhance Service Bus with additional features and products, like security and backup services.

Documentation and resources

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