One major factor that determines the choice of an operating system is the device type. Operating systems are designed for specific categories of hardware and usage environments, such as desktop computers, servers, mobile phones, tablets, embedded devices, and network appliances. In Information Technology fundamentals, selecting an operating system begins with identifying the platform requirements, including processor architecture, memory limits, battery needs, and how the device will be used. For example, iOS and Android are designed for mobile devices, Windows and macOS are designed for desktops and laptops, and server operating systems are tuned for reliability, remote administration, and multi-user workloads. While driver compatibility is also an important consideration, many curricula treat it as a sub-factor related to hardware support within a chosen device category. Number of devices relates more to licensing and deployment planning, and coding language is not a direct determinant of which operating system must be used. Therefore, device type is a correct factor in choosing an operating system.