The lead  ·  01

Google Marketing Live 2026 — Gemini becomes the operating system

At Google Marketing Live on May 20, Google reframed Gemini from feature to operating system across ads, commerce, and measurement.

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The week in one paragraph

If last week was about upfronts, this week was about agents — and the bill they’re handing publishers. In seven days: Google made Gemini the operating system of its ads, commerce, and measurement stack at Google Marketing Live, complete with an agentic-shopping protocol; Meta opened its ad stack to third-party AI agents (ChatGPT, Claude, Perplexity via MCP); The Economist began building a literal two-track internet, one web for humans and one for agents; Amazon cut affiliate commissions by up to 50% and reduced the reporting publishers relied on; the Publicis–LiveRamp deal claimed its first casualties as Omnicom and Horizon accelerated their exits; The Trade Desk opened its DSP inside Skai and Pacvue; Snap conceded buyers need independent measurement; agencies kept moving closer to supply; IAB Tech Lab’s live-content OpenRTB signals neared their May 28 comment deadline; and the post-upfront read settled on three words — agentic, outcomes, fandom. One thread ties it all together: the discovery, buying, and commerce layers are consolidating onto AI agents, and inventory (or content) that isn’t machine-legible and outcome-provable gets skipped. Publishers who instrument for the agent web this quarter will keep their seat; those who don’t will quietly lose the click, the budget, and the margin.