The front end of ecommerce evolved faster than anyone expected. AI agents are now completing purchases autonomously on behalf of consumers. Shopify products are buyable inside ChatGPT. Google's Universal Commerce Protocol connects Walmart, Target, and Etsy into a single agentic buying layer. Visa and Mastercard have built payment infrastructure specifically for autonomous AI transactions. Most ecommerce backends weren't built for any of this. **Here's the specific technical problem. **When an AI agent evaluates a product for purchase, it doesn't browse a storefront. It queries structured data - inventory availability, pricing signals, delivery windows, fulfillment reliability. It makes a decision in milliseconds based on what that data returns. If your inventory is stale by 15 minutes because your sync runs on a schedule rather than firing on events - the agent sees inaccurate availability data. It doesn't wait for your next sync. It moves to a competitor that returns accurate data.…