Ring devices work with Alexa if you enable a Ring home security or smart home product's skill in the Amazon assistant's app.
Alexa works with a Samsung Galaxy S10 if you install the Alexa app from the Google Play Store. You can also set Alexa as a default digital assistant.
Amazon showed me its new Alexa Home Theater surround sound system, which synchronizes and automatically configures multiple Echo Dot Max or Echo Studio speakers to work with your TV.