An Amazon device is displayed at an Amazon Devices launch event in New York City on Feb. 26, 2025.Brendan McDermid | ReutersAmazon has been using homegrown artificial intelligence technology to help users compare products and buy or reorder items on their behalf. Now the company is licensing that technology to other retailers, as it vies to be the backbone of AI shopping across the web. In a blog post Wednesday, Amazon said it's taking the "architecture, starter code and learnings" from Alexa fo...