https://www.cnet.com/news/did-amazon-alexa-and-microsoft-cortana-just-become-best-friends-windows-echo/

Amazon's Alexa and Microsoft's Cortana are personal assistants you can talk to, and now they're going one better: They're talking to each other.

If you use Windows for work but you also have an Amazon Echo, you'll soon be able turn to your Echo and say, "Alexa, open Cortana." That'll give you access to your Windows and Office 365 stuff like calendars, email and reminders through your Echo.