Cortana - Your personal productivity assistant
https://www.microsoft.com/en-us/cortana
Cortana helps you achieve more with less effort. Your personal productivity assistant helps you stay on top of what matters, follow through, and do your best work.
Cortana - Wikipedia
https://en.wikipedia.org/wiki/Cortana
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.
How to Use Cortana | Digital Trends
https://www.digitaltrends.com/computing/how-to-use-cortana/
You might know Cortana as the digital voice assistant on the now-defunct Windows Phone mobile platform. Here's how to set up and use Cortana in Windows 10.