Display Advertising

Display advertising encompasses the visual ad formats that appear across websites and apps, from simple banner images to interactive rich media units. It is the largest category of programmatic advertising by volume, running across millions of publisher properties through ad exchanges and networks.

For growth teams, display advertising serves dual purposes: broad awareness at scale and targeted performance through retargeting and prospecting. AI has transformed display from a blunt awareness tool into a precision performance channel through improvements in audience targeting, bid optimization, and creative personalization. Growth engineers should approach display with clear expectations about its role in the funnel. Prospecting display campaigns typically have higher CPAs than search but reach users earlier in their journey. The key optimization levers are audience targeting quality, creative relevance, and placement selection. Machine learning models that optimize across all three dimensions simultaneously outperform approaches that optimize each independently. Teams should measure display performance through incrementality testing rather than relying solely on click-based attribution, which systematically undervalues display's contribution to the conversion path.