https://www.theverge.com/2017/8/18/16161058/amazon-echo-show-alexa-dot-which-one-to-buy

Alexa seems to be everywhere. Since Amazon’s voice assistant was introduced three years ago, it’s grown and grown in size and scope. Alexa is now on dozens of devices, has over 15,000 “skills,” and is quite possibly the name you think of when a digital assistant comes to mind — which is some really bad news for Siri.

If you haven’t tried Alexa yet, all this attention may have you interested in picking up one Amazon’s many Echo devices. But at this point, there are a whole lot of options that all do slightly different things and give Alexa slightly different abilities. Here are the differences between them and why you might want to pick one over the other.