The communication between applications is already defined, which means that you don't have to redefine your service infrastructure at the lower level.
Oracle Service Bus is lightweight and integrates seamlessly with diverse applications, databases, and web services, handling up to 300 transactions per second. It provides valuable routing capabilities, stability, and drag-and-drop mappings. Compatible with various protocols, it ensures robust security. However, it needs more adapters and enhanced scalability, lacks cloud compatibility, and its security and error-handling require improvements. A steep learning curve and resource demands can complicate management.