Part 2: Collaborative SystemsInternational audienceIn the current economic turbulence, it is crucial for companies and organizations to attain strategic alliances to respond to new business or collaboration opportunities. Besides the importance of understanding the structures and requirements of such alliances, it is also of extreme importance that the process of negotiation to create those alliances is properly modeled so that the elements that constitute the alliance agreements are accurately represented and the involved risks are mitigated. With this aim, this paper outlines the main requirements of an electronic negotiation support environment in a collaborative network, including a brief analysis of how it can help in reducing the risk potential, considering the relevance of the expectations of the involved partners, and highlighting the importance of a technological support environment