From traditionally complex and large systems; such as spaceships, airplanes, and cars; to everyday products connected to the Internet of Things; such as wearable fitness devices, home appliances, and car infotainment systems; the products we make are becoming increasingly complex, multi-disciplinary, and interconnected. This requires a shift in our approach to design: from defining digital 3D models of assemblies and parts to defining entire systems; from analyzing components in isolation to analyzing whole systems; from delivering a product that satisfies the technical requirements to delivering an operational capability that satisfies a business problem.