Amazon's AI answers questions on product detail pages by analyzing the listing content, customer reviews, previous Q&As, and web information about the product and brand. It uses an LLM (Large Language Model) to provide real-time responses in the Q&A section, aiming to give comprehensive and contextually relevant answers.

The integration of AI into Amazon product listings means that any discrepancies in the content of the listings could lead to confusion when the AI answers customer queries. It's crucial for sellers to ensure their listings are accurate and consistent to avoid potential issues with the AI's responses.

The significance of Amazon's AI update in the Q&A section lies in its ability to enhance the consumer experience by providing immediate, accurate, and context-rich answers to product-related questions. This update represents a move towards more fully integrating AI into the shopping experience, potentially transforming how searching on Amazon works.