In a world where Amazon and Walmart are always finding ways to go neck in neck, both retail giants are focusing on enhancing their established strengths this week.  Amazon is launching a generative artificial intelligence (AI) tool that aims to address shopper questions, and Walmart is investing some serious coin into its physical retail — about $9 billion to be exact, to modernize its experience. Amazon AI Tool Tackles Shopper QueriesAmazon is launching a tool that uses AI to respond to shoppers’ questions ...