SQS is a fully managed message queuing service that enables asynchronous communication between distributed applications, microservices, and serverless functions. It helps decouple application components, allowing them to scale independently and process messages reliably.
A logistics company uses SQS to manage message queues between different services in AWS. To integrate with its on-premises system, it also uses Azure Service Bus, enabling legacy applications to process messages originating from AWS. This allows the company to bridge the gap between cloud-based and on-premises services in a secure and scalable manner.