The paper discusses the key enabling mechanisms introduced byWeb 2.0 technologies that can support Product Service Systems (PSSs)development teams in increasing the quality of early design decisions.The paper collects success stories and lessons learned from two empirical casestudies in the aeronautical supply chain, and from a set of questionnairesforwarded to major automotive manufacturers, about the implementation ofEngineering 2.0 tools, such as wikis, blogs and forums, to overcomeknowledge-sharing barriers between cross-functional design teams. The studyreveals that bottom-up and lightweight technologies can enable theimplementation of more value-driven development processes, providing meansfor locating expertise in the extended organisation, for capturing the ‘context’of the information managed, and for assessing and validating knowledge assetsin a more collaborative fashion. Eventually, it points to the most relevant issuesthat currently prevent the implementation of Web 2.0 technologies in a productdevelopment setting.