Agentic ad buying isn’t coming soon; it’s already here. And it was the dominant theme at the May 2026 edition of the Digiday Programmatic Marketing Summit, held May 6 to 8 in Palm Springs, Calif. Executives from brands including Duluth Trading Company and agencies such as Butler/Till discussed how they’re already using AI agents to buy ads. During behind-closed-door town hall sessions, programmatic marketers shared how they are incorporating AI …