Why Microsoft should, and shouldn't, support legacy Windows desktop on...

Ever since Microsoft first announced that Windows 8 would be compatible with certain ARM system-on-chip processors, questions about what this would mean for existing Windows applications have been abundant. ARM's strength is in low-power applications, and the decision to support the architecture was plainly motivated by the needs of the tablet market—which left observers wondering just how much of Windows would actually be supported on ARM? Just the bits relevant to tablet and consumer applications, or the whole shebang? When Microsoft revealed and then described Windows 8's Metro-style tablet interface, the company left the ARM questions unresolved.

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