Service oriented architectures: approaches, technologies and research issues

摘要: Service-oriented architectures (SOA) is an emerging approach that addresses the requirements of loosely coupled, standards-based, and protocol- independent distributed computing. Typically business operations running in SOA comprise a number invocations these different components, often event-driven or asynchronous fashion reflects underlying process needs. To build highly distributable communications integration backbone required. This functionality provided by Enterprise Service Bus (ESB) platform utilizes Web services standards to support wide variety patterns over multiple transport protocols deliver value-added capabilities for applications. paper reviews technologies approaches unify principles concepts with those event-based programing. The also focuses on ESB describes range functions are designed offer manageable, standards-based extends middleware throughout connecting heterogeneous components systems offers services. Finally, proposes extend conventional cater essential include such as service orchestration, "intelligent" routing, provisioning, integrity security message well management. layers this extended SOA, short xSOA, used classify research issues current activities.