Corporate decisions related to “make or buy” have significantly changed over the last 20 years, since the rush towards concentration on core business of the 1980s has progressively lost grasp. Although long-term alliances and mega deals are replacing the existing spot contracts, both academic literature and managerial practices still lack appropriate models for coping with such decisions. As a consequence, the traditional accounting approach, extensively based on emerging costs and cost savings, seems to be less and less effective in the governance of such phenomena. On the other hand, the managerial literature still suffers significant gaps in modeling the relations between outsourcing and business performance. The attention paid to the su...