This is a high level view of what happens when a JD Edwards World service is invoked JD Edwards World services are built using Oracle's Java development tool, JDeveloper Another example of how JD Edwards World services can be incorporated into a web application. In this case, a dashboard accesses Item Availability via an Item Availability service A web application using World services to access World information. World services are designed as 'request/reply' objects World services are delivered as a set of .jar files