Software-Defined Anything (SDx) represents a transformative approach where software assumes primary control over functions traditionally managed by hardware. In this paradigm, hardware components—whether in infrastructure, vehicles, manufacturing, or security systems—become platforms for configurable digital control, unleashing unprecedented flexibility, rapid innovation, and adaptability. Key characteristics of SDx include: Abstraction of hardware functionality into modular, software-driven systems—including networking, storage, compute, security, and even physical devices. Continuous evolution through software updates rather than hardware redesign—similar to how smartphones evolve functionality rapidly without changing the device. Operational agility, where systems can rapidly respond to shifting demands, scale dynamically, and streamline integration across devices or environments. This concept spans across domains: SDN, SDS, and SDDC reform IT infrastructure. Software-Defined Vehicles (SDV), Software-Defined Defence, and Software-Defined Manufacturing transform industries by embedding flexibility and software-first thinking into physical artifacts. Emerging enablers like AI, virtualization, and cloud platforms amplify SDx’s potential. By design, SDx reshapes the competitive landscape—allowing businesses to pivot faster, deliver new services efficiently, and reduce dependency on fixed hardware infrastructures.