Google expands its Universal Commerce Protocol with Cart and Catalog capabilities, letting AI agents build shopping baskets and query live inventory. Identity Linking via OAuth lets shoppers carry over loyalty discounts when buying through AI Mode or Gemini. The update aims to simplify Merchant Center onboarding. https://www.searchenginejournal.com/google-expands-ucp-with-cart-catalog-onboarding/570084/ #Marketing #Strategy #AI #Google