What is Google home?
Google Home is a voice-activated speaker powered by the Google Assistant. A simple voice request triggers Google Home to play music, podcasts or radio from services like Google Play Music, Spotify, YouTube Music, Pandora and Tune In.

Amazon Echo is a product similar to Google home.
As with Echo, you can control a range of smart home devices and play music via Spotify and Google Play Music. You can also control connected Chromecasts around your house, meaning you can ask Google Home to play something on your TV without you having to lift a finger (or a remote).