Cortana is Microsoft’s answer to Apple’s Siri – an intelligent personal assistant for Microsoft Windows 10, Windows 10 Mobile, Windows Phone, Microsoft Band, Xbox One, iOS and Android.
Making its debut at the 2014 Microsoft BUILD Developer Conference, it was billed as a stand out feature of the revamped operating systems for Windows Phone and Windows.
Named after a character from the video game Halo, Cortana can be spoken to without the need to manually input data from a keyboard.