In many industrial sectors, business networks emerged as collaborative partnerships for tackling challenges caused by globalization and changing market needs. These networks are bundling competence and knowledge of different partners for co-operations in development or manufacturing projects. In such networks and collaborations, management of knowledge, competences and capacities at the different network members is crucial. This paper investigates requirements and challenges to knowledge management for business networks and argues that context-orientation is a key feature of modern approaches. The focus on our work is on decision support.