What is Amazon Alexa, echo, echo dot and echo plus ?

Amazon Alexa is a personal assistant device. which can be controlled by our voice. Alexa is available in three variants. That is Echo, Echo dot and Echo plus. Echo Dot – Voice control your music, Get news, weather & more. ,¬†Echo Dot is a hands-free, voice-controlled smart device for the home with a built-in speaker. …

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