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AbstractThis paper describes a proposed system for competency-based just-in-time learning that uses competency ontologies and semantic web services to deliver learning objects to learners in a corporate environment. A competency ontology is a rich, semantic description of the competencies an employee must possess in order to participate in specific activities of the business processes of a company. Semantic web services are web services based on SOAP, WSDL and UDDI that have been further augmented with semantic descriptions. These semantic descriptions enable people and software agents to more efficiently identify services that can provide the proper learning objects. The key to the just-in-time delivery of learning objects is an explicit representation of the business processes of the enterprise and learning processes personalized to each employee. 1. Competency-Based Just-in-Time Learning A goal of corporate e-learning is to increase efficiency by identifying precisely the training that an employee needs to do their job and provide that training in the context of day to day job activities of the employee. Figure 1 illustrates the flow of activity to implement competency-based just-in-time learning services in an enterprise environment. In the lower right hand corner is a representation of a couple of the business processes of the enterprise. The example shown here is the interaction between an ERP process implemented using SAP and a CRM process implemented using Siebel. In the upper left hand corner are the ontologies that capture knowledge about the products, organizations, competitors, etc. of the enterprise. A competency ontology is included that captures the competencies that an employee must possess to participate in specific activities of the business processes.