In this paper the focus is on the strategy formulation processes, specifically supportive methods and structures, which address various managerial issues concerning discontinuous technologies and radical innovation in the early phase of strategic decision-making. In three in-depth case studies how companies proceeded with discontinuous technology and radical innovation ideas in strategy formulation was investigated ex-post. Based on literature and the analysis from the cases nine propositions are suggested for the design of an idealised strategy formulation process model for the simultaneous and differentiated strategic management of radical innovation and incremental innovation. The propositions are transformed into a visualised process model showing the interaction and arrangement of the latter.