In contemporary business, established enterprises continuously explore strategies for renewal. Structural ambidexterity, which entails developing separate organizational units for innovation and operational efficiency, has become a key strategy for this purpose. Previous research has primarily focused on structural design. This paper builds on, and extends the merging process perspective. We analyze the evolution of strategic structural ambidexterity in three firms, adopting a longitudinal perspective. This approach reveals unique trajectories. We delve into their variations in intentions, temporality, and tensions. By doing so, our research enriches the understanding of ambidexterity as a dynamic process, offering a deeper insight into the varied paths structural ambidexterity can take and its implications for business strategy.