The IAB raises its forecast for ad spend growth; Google continues to develop its open-source MMM tool; and Partiful is still learning how to monetize.

Forecasts show ad spend growing faster than expected and share of ad dollars funneled through AI up 27% of U.S. spend by 2030.

IAB Raises 2026 U.S. Ad Spend Forecast to +12.3% YoY Growth, as Strong First Half Lifts Expectations