Quantcast is the AI-powered ad platform built for performance marketers. Leveraging nearly 20 years of expertise, our mission is to radically simplify open internet advertising. We harness AI and machine learning to deliver superior audience intelligence and drive exceptional campaign performance. With real-time audience intelligence, end-to-end workflow simplicity, and future-proof cookieless reach, Quantcast helps advertisers and agencies of all sizes understand audiences deeply, act faster, and turn ad spend into measurable growth.