Amazon.com Inc. opened a studio Oct. 25 in its corporate office at The Domain at 11501 Alterra Parkway, Austin, to support its Lumberyard video game software engine. Amazon Lumberyard launched in February as a free software engine for video game developers. It offers integration with Amazon Web Services and Twitch, the company’s video game-focused live video streaming platform. www.aws.amazon.com/lumberyard