Cortana is a virtual assistant developed by Microsoft which uses the Bing search engine to perform tasks such as setting reminders and answering questions for the user.

What Cortana means?

Cortana is Microsoft's personal productivity assistant that helps you save time and focus attention on what matters most. ... Join a meeting in Microsoft Teams or find out who your next meeting is with. Create and manage lists. Set reminders and alarms. Find facts, definitions, and info.

Why is it named Cortana?

It is named after Cortana, a synthetic intelligence character in Microsoft's Halo video game franchise originating in Bungie folklore, with Jen Taylor, the character's voice actress, returning to voice the personal assistant's US-specific version.