Display Advertising
Visual ads including banners, images, rich media, and video shown on websites, apps, and social media through ad networks like the Google Display Network, which reaches over 90% of internet users worldwide. Display advertising encompasses standard IAB sizes (300x250, 728x90, 160x600), responsive display ads that automatically adjust to available placements, and native ad formats that blend with surrounding content. Display campaigns operate on CPM or CPC pricing models and are commonly used for brand awareness, retargeting, and product remarketing. The average display ad CTR across industries is approximately 0.35%, significantly lower than search ads but offset by much lower costs and broader reach.
Why It Matters
Display advertising reaches users while they browse content across millions of websites and apps. It excels at building brand awareness and keeping products top-of-mind, complementing search campaigns that capture existing demand. Studies show that display advertising can increase branded search volume by 10-25%, creating a measurable halo effect on other channels. Advanced display strategies use contextual targeting (placing ads alongside relevant content) and audience layering (combining demographics, interests, and in-market signals) to improve relevance. Display also supports sequential messaging, where users see different creatives based on their stage in the buying journey, from awareness-focused brand videos to product-specific retargeting banners.
Example
A travel company runs display ads across news and lifestyle websites targeting users who recently searched for vacation destinations. The campaign reaches 5 million unique users at a $4 CPM with a $20,000 monthly budget, driving a 12% lift in branded search volume over 8 weeks. The team then layers contextual targeting, placing beach resort ads on travel blog pages and ski resort ads on winter sports content. This contextual approach increases CTR from 0.25% to 0.62% and reduces the effective cost per site visit by 55%. Combining display with retargeting, users who see display ads and later visit the site convert at 4.2% compared to 2.8% for organic-only visitors.
Related Terms
Programmatic Advertising
The automated buying and selling of digital ad inventory using algorithms and real-time bidding (RTB), where each ad impression is auctioned individually in under 100 milliseconds. Programmatic advertising accounts for over 90% of all digital display ad spending and encompasses display, video, native, audio, connected TV, and digital out-of-home channels. The ecosystem includes demand-side platforms (DSPs) for buyers, supply-side platforms (SSPs) for publishers, and ad exchanges that facilitate the auction. Programmatic enables precise targeting using first-party data, third-party data, contextual signals, and machine learning-optimized bidding strategies.
CPM
Cost Per Mille (mille meaning one thousand in Latin) is the cost an advertiser pays for one thousand ad impressions. It is the standard pricing model for display, video, and programmatic advertising. CPM is calculated by dividing total ad spend by total impressions and multiplying by 1,000. Average CPMs range widely: social media display ads cost $5-$12, YouTube pre-roll averages $10-$30, and connected TV campaigns can reach $25-$50. CPM is most useful for comparing reach efficiency across channels and formats when the primary goal is brand awareness rather than direct response.