https://www.theverge.com/2018/1/15/16892462/microsoft-cortana-alexa-google-assistant-ces-2018

The annual Consumer Electronics Show is always a good opportunity to get an early look at devices coming throughout the year. It’s also a reasonable gauge on the health of an ecosystem, or emerging platforms. At this year’s CES it was all about Alexa vs. Google Assistant. If you were hoping to see more Cortana-powered devices, they were nowhere to be found.

With the exception of the Cortana-powered thermostat (announced last year), no new Cortana devices were unveiled at CES this year. In comparison, Alexa is arriving on headphones, smartwatches, cars, and many more TVs this year, and will even be able to directly control ovens and microwaves. Google introduced a new Smart Display platform with its Assistant, and Google Assistant is also coming to more TVs, headphones, and even Android Auto. Google made it clear it was ready to fight Alexa, but Microsoft stayed silent.