Amazon CEO Andy Jassy speaks during an Amazon Devices launch event in New York City, U.S., February 26, 2025. Brendan Mcdermid | ReutersAmazon, in an effort to infuse generative artificial intelligence across a wider swath of its e-commerce universe, recently began testing a shopping assistant and a health-focused chatbot with a subset of users.AI has become a major area of investment across Amazon, including in its retail, cloud computing, devices and health-care businesses. Within the retail b...