Twitch and Amazon were not immediately available for comment.
Various media first reported in May that Google had sealed an agreement to buy Twitch for $1 billion, but a deal was never confirmed.
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San Francisco-based Twitch allows consumers to broadcast live-streams of themselves playing video games. Its social networking features allow viewers to communicate with each other and the featured gamer during broadcasts. The company says more than 45 million gamers visit its site every month.
Video games are among the most popular content on YouTube, the world's No. 1 video website owned by Google. In September, Twitch raised $20 million in funding from Thrive Capital, WestSummit Capital and Take-Two Interactive Software, among other parties.
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