In today's episode, John breaks down the moves shaping the next era of eCommerce, from Shopify's quiet but significant shift to a Universal Commerce Protocol for AI agent interactions, to Walmart's $1.4 billion bet on connected TV advertising. With new data showing AI-referred visitors engage twice as deeply as other traffic sources, and research revealing how easily AI recommendations can be manipulated, this episode connects the dots between platform changes and the advertising arms race defining 2026.

Key topics covered:

• Shopify's deprecation of Storefront MCP cart tools in favour of UCP-conforming Cart MCP and why it matters for agentic commerce

• Walmart's acquisition of Vibe.co and the acceleration of the retail media profit engine

• SimilarWeb data on ChatGPT recommendation quality: 12 pages viewed vs. 6.5 from other sources

• OpenAI reports 50% drop in ChatGPT ad dismissals as relevance improves

• The vulnerability of AI agents to content manipulation: a 13-word edit can steer recommendations

• Google Ads ending Smart Campaign creation via API, pushing toward Performance Max

• Google's June 2026 spam update and new "Strongest match" ad labels

• Target's back-to-school launch as the first test of its turnaround

• GameStop's $56 billion pursuit of eBay and what it means for marketplaces

• Magento 2 PCI DSS 4.0 compliance considerations
  

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