Tech giants are battling to position their smart speakers as the center of the digital home. But Microsoft, which lost the mobile wars to Apple and Google, is trying to ensure that it will have a place, no matter who wins. Microsoft has its own voice-based digital assistant, Cortana, that could theoretically power a challenger to the Amazon Echo, Google Home, or Apple HomePod for countertop space. Indeed, Cortana is already core to a smart speaker from Harman Kardon.

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