They give AI Mode and Gemini richer product data to work with:
question_and_answer: up to 30 Q&As per product, 1,000 characters each
document_link: up to 5 PDF links, like manuals or assembly guides
related_product: up to 30 accessories, substitutes or bought-together items
item_group_title: one name for the whole variant family, up to 150 characters
variant_option: color, size and material as name and value pairs
popularity_rank: a 0 to 100 score for how popular an item is in your catalog
Google recommends adding them through a supplemental feed, so your main product data stays untouched.
Eligible merchants can check the AI performance insights report in Merchant Center to see how products perform in AI Mode and AI Overviews.
Via Search Engine Land.
