Under the influence of globalization,and the impact of Information and Communication Technologies (ICT)that modify radically our relationship with space and time, the hierarchical company locked up on its local borders becomes an Extended Company, without borders, opened and adaptable. In this context, from a Knowledge Management view point, the employees at their computerized desktop need to access new types of information. In this paper, we introduce our group of researches’ definition of Knowledge Management. Then we present the concept of Extended Company and we analyze the new information needs of the Knowledge Worker at his computerized desktop. We propose the Knowledge Worker Desktop’s Model (KWDM), which highlights three types of data to be considered in the development of ICT applications: "mainstream" data, "shared" data, and "source-of-knowledge" data. We conclude with the perspective of a Digital Information System (DIS) centered on the knowledge-worker, which becomes a new way to design the architecture of a Digital Information System adapted to an Extended Enterprise.
