The digital marketing world has always been a game of adaptation. Remember when SEO ruled, demanding keyword-stuffed pages to climb search rankings? Then came generative AI, flipping the script with instant answers that bypassed clicks altogether. Enter Generative Engine Optimization (GEO), the strategy brands adopted to ensure their content influences those AI summaries and recommendations. But as AI evolves from mere responder to active agent—handling bookings, purchases, and decisions on our behalf—we're witnessing a deeper shift. This is the dawn of Agentic Commerce Optimization (ACO), where measuring brand performance means tracking not just visibility in answers, but influence over actions like direct sales in chat interfaces.