What Does Windows on ARM (WOA) Mean?
Techopedia Explains Windows on ARM (WOA)
WOA is designed for use with portable handheld devices, such as tablets and smartphones, that are powered by ARM microprocessors. WOA only supports the installation of applications certified by Windows, available via the Windows online store and/or developed using the Windows “tiled” style display format.
WOA cannot be directly purchased by end users or consumers and is only available to device manufacturers and proprietary Microsoft Windows tablet manufacturers. WOA is geared toward use for home, educational or personal use and comes pre-installed with various free applications, such as Office 2012 Home and Student RT.