Explain the architecture of Azure Service Bus in a distributed system.

Azure Service Bus is a fully managed enterprise message broker that enables reliable asynchronous communication between distributed components using queues, topics, subscriptions, and advanced messaging features. Its architecture decouples producers and consumers by storing messages durably, routing them through broker entities, and providing delivery guarantees, ordering, transactions, and security controls. It is commonly used to build resilient event-driven systems, microservices architectures, and integration workflows.

Azure Service Bus sits between distributed application components and acts as a reliable communication intermediary. Instead of services communicating directly with each other, producers send messages to Service Bus entities, and consumers receive them independently. This removes temporal and availability coupling between services.

A typical architecture looks like:…