Amazon keeps building out its Alexa ecosystem by adding more features and integrating products. But the platform has more potential than just allowing, say, your Fire tablets in on the voice control fun. But now Alexa has a new ability, Announcements, that lets customers speak into one Echo device and have the message barked out of all the other ones in a network. Basically, it gives your Alexa-connected house a one-way intercom feature.
