While the established, coherence view of internal fit provides a compact representation of firms and strategy, it also discounts the strategic benefits of tensions and contradictions, and downplays strategy creation and change. Here, we develop a novel dialectical alternative to fit-based models of strategy. Within our model, contradictions and tensions serve as a key engine for strategic renewal and transformation. If carefully harnessed through what we call “disciplined incoherence,” contradictions can help firms establish and change their strategies and business models, adapt to and shape their environment, and enhance and sustain their competitive advantage. We offer a dynamic, endogenous view of how configurations are generated, transformed, and maintained, and present a processual alternative to current strategy models that are grounded in equilibrium and coherence assumptions.