Google Ads is now an AI-mediated marketplace. As of 2026, Performance Max, Smart Bidding, and Demand Gen account for 80%+ of UK ad spend on the platform. The role of the human media buyer has fundamentally changed.
Bidding — Smart Bidding optimises every auction in real time using 70+ contextual signals Targeting — Performance Max blends search, display, YouTube, Gmail, and Maps with no manual placement control Creative assembly — AI assembles ad combinations from your asset library Audience expansion — predictive audiences extend reach beyond declared targets
Account structure — campaign segmentation by margin, brand, or product line Conversion goals — what success actually means (revenue, qualified leads, LTV) Asset quality — the quality and variety of headlines, images, and video Negative keywords and exclusions — protecting margin and brand safety First-party data — feeding the AI clean signals via enhanced conversions
1. Feed the algorithm clean revenue signals — server-side conversion tracking, offline conversions, customer LTV 2. Segment by margin, not channel — group campaigns by profit profile 3. Pour creative volume in — 30+ assets per campaign minimum 4. Use scripts and APIs to monitor anomalies — humans own the guardrails 5. Test geo-incrementality quarterly — never trust platform-reported ROAS alone
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