Microsoft Copilot Checkout Expands to 500K Merchants on Mobile — Universal Commerce Protocol, Loyalty Integration, and WooCommerce Support Go Live

Windows Central·medium signal

Microsoft expanded its AI-powered checkout flow to over 500,000 merchants and shipped it in the Copilot mobile app for US users, powered by PayPal, Shopify, and Stripe. New additions include Universal Commerce Protocol support, customer loyalty experiences with exclusive discounts, and WooCommerce compatibility. This is the clearest signal yet that AI assistants are becoming transactional infrastructure — when half a million merchants can accept payments through a conversational interface, the line between search, shopping, and checkout collapses.