Today many organizations are adopting the concept of a Service Oriented Architecture (SOA) as a means to provide greater flexibility to interoperate with external systems and to simplify and standardize integration processes within their IT infrastructure.
JD Edwards EnterpriseOne has come up with Business Services, which was shipped with E1 since 8.97 tools release. From 8.12 onwards Business Services were available, but needed 3rd party tools to enable it.
JDE development has chosen a simpler definition of SOA:
Service Oriented Architecture provides a standards-based platform that allows business services to be developed, published, discovered and consumed by each other in a loosely coupled manner, in order to facilitate the creation of orchestrated business Processes
Read More on Business Services at http://www.deepeshmd.com/enterpriseone/jde-business-development-starting-soon/
We will be soon starting a complete guide to hands on Business Services development.