IAB forecasts 9.5% ad growth as marketers shift toward agentic AI: Interactive Advertising Bureau projects 9.5% US ad spend increase in 2026, with five of six top priorities driven by AI as advertisers embrace autonomous campaign management. https://ppc.land/iab-forecasts-9-5-ad-growth-as-marketers-shift-toward-agentic-ai/ #IAB #AdGrowth #AIMarketing #DigitalAdvertising #AutonomousCampaigns