The term "device agnostic" in software design refers to applications or systems that can function seamlessly across various platforms or devices, including smartphones, tablets, and desktops. Being device agnostic ensures that users can access the same software and experience, regardless of their hardware specifications or operating systems. This approach enhances user satisfaction and expands the reach of applications by catering to a broader audience. Developing device-agnostic applications often involves responsive design principles and flexible architectures, ensuring consistent performance and usability across all devices.