The Amazon Echo, a voice-controlled virtual assistant, is seen at it's product launch for Britain and Germany in London, Britain, September 14, 2016. REUTER/Peter Hobson - RTSNQKL

Alexa could be Amazon's next big winner

Amazon makes most of its money from being an easy place to shop on the Web and from its role as an internet backbone. Soon, its voice assistant Alexa may also generate billions in ...