Enterprise Integration Patterns: Designing, Building, and Deploying Messaging Solutions, Gregor Hohpe and Bobby Woolf, 2003 (Addison-Wesley) - A classic reference that documents common patterns for integrating enterprise applications using messaging, including Request-Reply, Asynchronous Messaging, Message Queues, and Polling Consumers, directly relevant to the architectural diagrams in the section.
Amazon Simple Queue Service (SQS) Developer Guide, Amazon Web Services, 2025 (Amazon Web Services) - This comprehensive guide explains Amazon SQS, a managed message queuing service, detailing how it enables decoupled and asynchronous architectures suitable for long-running tasks. It covers queue types, message handling, and integration patterns within a cloud environment.