Software is eating the world and has become a major driver for economic growth. Companies are spending increased percentages of their R&D budget on software. Unfortunately, not all of this increased spending is of true economic benefit for the company and its customers. Legacy software costs eat significant portions of the budget. Industry is in need of breakthrough innovations to reduce software maintenance cost. Philips Healthtech Image Guided Therapy Systems successfully applied model-driven engineering techniques to reduce the software stack with over 1 million lines of code, significantly lowering the cost of maintenance.