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When you buy through links on our site, we may earn an affiliate commission. Learn more. Pocket-lint - The Amazon Echo is one of a range of hands-free speakers and devices from Amazon that can be controlled with your voice. The voice-controlled "personal assistant" on these devices is called Alexa, which will perform various tasks for you and control various systems.

As well as being available on Echo devices from Amazon directly, Alexa is available on a lot of third-party devices like speakers or TVs as well as through the Alexa app on phones. Alexa is also available in some cars and in some wearables. There are two sides to this question - devices that work with Alexa such as Philips Hue - and devices that offer Amazon Voice Services, which is the platform that runs Alexa. First and foremost, Alexa is designed around Amazon's own Echo devices.

The cheapest Echo device is the Echo Dot, which is a good starting point for building an Echo system and getting started. You can see all the Echo devices compared right here. You can see a range of Echo alternatives here that offer Alexa too. All these devices feature far-field microphones that can pick out your voice through background noise and are waiting to take your command when they hear the Alexa wake word. Once you say this, Alexa will swing into action and respond to your commands.

Alexa was the first significant entrant into the market, and her head start remains advantageous as the likes of Google Google Assistant , Apple Siri , Microsoft Cortona and Samsung Bixby play catch-up.

Analysts expect that number to grow tenfold by —just two years from now. And her footprint is globalizing: In December, , Amazon announced a major international expansion in which Echo devices would enter 80 new countries.

Following the holiday season, Amazon had sold tens of millions of Alexa-enabled devices from the Echo family. Despite their nascency, digital assistants are already influencing behavioral shifts. If you click through using links on the site, we may earn an affiliate commission. Learn more. Related stories amazon alexa How to use Bluetooth to connect Amazon Echo to phones or speakers amazon alexa Is Alexa always listening? Is your smart speaker spying on you? What the colors on your Echo smart speaker mean security cameras How to view security camera footage on your Amazon Echo devices amazon alexa The best Alexa speakers: Smart speakers with Amazon's Alexa built-in amazon alexa How to associate Sonos and Echo speakers and create groups.

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