Service Bus
Service Bus is a cloud-based messaging service that enables reliable communication between distributed applications and services. It provides features like message queuing, publish/subscribe topics, and advanced integration patterns to decouple components in microservices architectures. It is commonly offered by cloud providers like Microsoft Azure (Azure Service Bus) and AWS (Amazon Simple Queue Service/SQS).
Developers should learn Service Bus when building scalable, resilient applications that require asynchronous communication, such as microservices, event-driven systems, or enterprise integration scenarios. It is particularly useful for handling high-throughput messaging, ensuring message delivery with features like dead-letter queues, and implementing patterns like fan-out or request-response in distributed environments.