With increasing customer demands for new products and services, Microsoft needed to scale across its processes and tools to support these growing businesses – devices and cloud. Making small changes was not an option and it required big and impactful transformations across people, processes, and tools and it was needed yesterday --- transplanting the heart of the product development engine (PLM) while running a marathon. This session provides a look back on what Microsoft learned and what is need in the future to drive optimal organizational change.