Microsoft's Cortana will join Siri on iOS - CSMonitor.com

Microsoft is reportedly developing a version of its year-old digital assistant, named Cortana, for iOS and Android. The move seems to indicate Microsoft is trying new ways to get its products onto the two dominant mobile operating systems across the US. For mobile users, the question will be: how does Cortana stack up next to Siri? The Cortana project came out of a branch of Microsoft developing artificial intelligence, dubbed "Einstein." Cortana, which is named after a central character in the massively popular Microsoft-owned video game series Halo, has been installed on Microsoft phones for the past year.