A critical review of Porter's value chain concept and a proposal for a revised version

The scientific aim of this working paper is to review the well-known concept of the value chain and to evaluate the different activities under the current conditions and circumstances. The main question of research is to find out if the classification and composition of the various activities is still up-to-date. Methodologically, both a conceptual and an analytical approach are chosen. Using latest literature, statistical data and logical conclusions, the value drivers are critically under revision. The main finding is that the impact of innovation and procurement on the cost and value position of a company is related to the primary activities. On the other hand, the findings suggest that logistical activities should be classified as supporting activities.