Measuring and optimizing ad copy performance is crucial for effective advertising campaigns. This unit explores key metrics like click-through rate, conversion rate, and return on ad spend, which help gauge ad effectiveness and guide improvements. The unit covers A/B testing setup, tools for tracking performance, and data analysis techniques. It also delves into optimizing headlines and CTAs, adjusting copy for different platforms, and avoiding common pitfalls. Advanced techniques for refining ad copy are discussed to enhance campaign success.