1421 Semantic E-Business Challenges and Directions Giorgos Laskaridis University of Athens, Greece Konstantinos Markellos University of Patras, Greece Penelope Markellou University of Patras, Greece Angeliki Panayiotaki University of Patras, Greece Athanasios Tsakalidis University of Patras, Greece S introduction The emergence of semantic Web opens up boundless new opportunities for e-business. According to Tim Berners-Lee, Hendler, and Lassila (2001), "the semantic Web is an extension of the current Web in which infor- mation is given well-defined meaning, better enabling computers and people to work in cooperation". A more formal definition by W3C (2001) refers that, "the se- mantic Web is the representation of data on the World Wide Web. It is a collaborative effort led by W3C with participation from a large number of researchers and industrial partners. It is based on the resource descrip- tion framework (RDF), which integrates a variety of applications using eXtensible Markup Language (XML) for syntax and uniform resource identifiers (URIs) for naming". The capability of the semantic Web to add meaning to information, stored in such way that it can be searched and processed as well as recent ad- vances in semantic Web-based technologies provide the mechanisms for semantic knowledge representation, exchange and collaboration of e-business processes and applications. Semantic e-business can be defined as "an ap- proach to managing knowledge for coordination e- business processes through the systematic application of semantic Web technologies" (Singh, Iyer, & Salam, 2005). In this context, organizations have the potential to develop descriptions of their business processes, as well as business rules in order to create content-based and logic-driven information and knowledge value. The adaptation of semantic knowledge representation languages, for example, XML, RDF, OWL (Web Ontol- ogy Language), and so forth, and other emerging tech- nologies such as ontologies, resource meta-ontologies, Web services, intelligent agents, and so forth, comprise critical factors for the implementation of semantic e- business vision in the digital economy. The aim of this article is to discuss semantic e-busi- ness challenges and provide some directions on how organizations will exploit these technologies in order to enhance their processes. It defines semantic e-business, describes the literature review and all these foundations upon which it is envisioned and demonstrates its close relation with development of semantic Web technolo- gies. Moreover, it presents the directions that support the vision of semantic e-business, illustrate the future trends and discuss the open issues in the field. BACKGRound The Web offers businesses a seamless digital environ- ment for conducting their processes. Semantic Web en- hances this environment by using meaningful semantic representations of information and knowledge. In this section, we focus on those technologies that define and enable knowledge representation, structure and Copyright © 2008, IGI Global, distributing in print or electronic forms without written permission of IGI Global is prohibited.