The feature rolled out on the 15th of August and it seems to be a little different from what was demoed at the conference.
Microsoft showed off how the integration would work at its Build conference earlier in 2018. After some delay, it’s now possible to have them talk to each other.
The collaboration between the two virtual assistants was announced in 2017 and was originally planned to be released in the same year. Microsoft’s Cortana and Amazon’s Alexa can now communicate and interact with one another.