Google Display Network (GDN)

The Google Display Network is a network of millions of websites, apps and Google-owned properties where Google places display ads on behalf of advertisers, allowing campaigns to reach users while they browse content outside of search results.

What Google Display Network Means in Marketing

While Google Ads is most commonly associated with search ads on google.com, a large part of its advertising inventory is the Google Display Network. The GDN comprises over two million websites and apps that have partnered with Google to show ads through its advertising platform, alongside Google’s own properties such as Gmail, YouTube and Google News.

When an advertiser runs a Display campaign, their ads can appear on any of these placements in formats including image banners, responsive display ads, and video. The targeting is audience-based: ads are shown to users who match specified characteristics, regardless of what content they are currently reading. This distinguishes display from search, where targeting is query-based.

The GDN is used primarily for reach and awareness campaigns, and for retargeting, which shows ads to users who have previously visited an advertiser’s website.

How Google Display Network Works

Display campaigns are created within Google Ads. Advertisers choose their targeting criteria, which can include:

• Audience segments: affinity, in-market, custom intent, remarketing and demographic targeting
• Contextual targeting: placements on pages containing specific topics or keywords
• Managed placements: direct targeting of specific websites or apps

Google’s ad serving system then identifies matching placements and users, and serves the ad accordingly. Advertisers pay on a cost-per-click or cost-per-thousand-impression (CPM) basis depending on how the campaign is configured.

Responsive Display Ads are the recommended format for the GDN. The advertiser provides assets (images, logos, headlines, descriptions) and Google’s system assembles them into the most suitable format for each placement automatically, maximising the range of placements the ad can fill.

Performance on the GDN tends to show lower click-through rates than search ads, since users are not actively looking for what is being advertised. However, reach is substantially higher because the available inventory is far larger than search.

Google Display Network Example

An online learning platform launching a new data science course runs a Display campaign targeting in-market audiences for “data science courses” and remarketing lists of users who visited the course page but did not enrol. Ads appear across news, technology and professional development websites. The remarketing segment shows course-specific creative to previous visitors; the in-market segment shows broader awareness creative to new audiences. The platform uses cost-per-impression bidding for the awareness segment and cost-per-click bidding for remarketing, where conversion intent is higher.

Why Google Display Network Matters for Marketers

The GDN provides reach at scale that search campaigns cannot match. For campaigns focused on brand awareness, product launches, or staying visible throughout a longer purchase consideration cycle, display placements keep the brand in front of relevant audiences across their broader browsing activity.

Retargeting on the GDN is one of its most effective applications. Users who have already shown interest by visiting a site can be followed across the web with relevant messaging, increasing the probability that they return to convert. This makes the GDN a strong complement to search campaigns rather than a replacement for them.