1. Target Audience: The first key difference between Google AdMob and Outbrain is their target audience. AdMob primarily focuses on mobile app developers and advertisers, allowing them to monetize their apps and reach their target users through relevant ads. On the other hand, Outbrain is designed for publishers and marketers who want to promote their content across a network of premium publishers, aiming to drive quality traffic to their websites or landing pages.

2. Advertising Format: Another significant difference lies in the advertising format supported by these platforms. AdMob primarily serves mobile app ads, including banner ads, interstitial ads, native ads, and rewarded video ads. It enables advertisers to create engaging ad experiences within mobile applications. In contrast, Outbrain specializes in native advertising, providing content recommendations that seamlessly blend with the publisher's page to enhance the user experience without being disruptive.

3. Ad Placement: AdMob and Outbrain also differ in terms of ad placement. AdMob allows advertisers to place their ads within mobile apps, appearing at strategic locations such as the top or bottom of the app screen, during app transitions, or as part of the app content. Outbrain, on the other hand, places its content recommendations at the end of articles or within the recommended article section on publisher websites, aiming to drive user engagement and increase page views.

4. Targeting Options: Both AdMob and Outbrain offer various targeting options, but they differ in their approach. AdMob provides precise targeting options based on factors like user demographics, geographical location, device type, and app categories. This allows advertisers to reach specific audiences and maximize their ad relevance. Outbrain, on the other hand, uses a combination of contextual targeting, lookalike targeting, and personalized recommendations to target users who are likely to engage with the promoted content based on their browsing behavior and interests.

5. Network Reach: When it comes to network reach, Google AdMob has a vast network of mobile apps and games that reach billions of active users worldwide. It provides access to Google's extensive advertising ecosystem and can tap into Google's vast audience base. Outbrain, on the other hand, has an extensive network of premium publishers and media brands, reaching a wide range of online audiences across different sectors such as news, lifestyle, entertainment, and more.

6. Pricing Model: AdMob and Outbrain also differ in their pricing models. AdMob primarily operates on a cost-per-click (CPC) or cost-per-impression (CPM) basis, where advertisers pay for each click or impression generated by their ads. Outbrain, on the other hand, generally operates on a cost-per-click (CPC) or cost-per-engagement (CPE) model, where advertisers only pay when users actively engage with their content, such as clicking on the promoted article.

In summary, Google AdMob is primarily focused on mobile app developers and offers a wide range of mobile app ad formats with targeted placements and access to Google's advertising ecosystem. Outbrain, on the other hand, is designed for publishers and marketers, specializing in native advertising that seamlessly integrates with publisher websites and aims to drive quality traffic to their content.