The document describes Engagement Ads from Google, which are ads that only charge advertisers when users engage with the ad content for two continuous seconds. Engagement Ads come in a variety of rich, interactive formats that allow brands to customize immersive experiences. They are more effective at engaging users compared to standard display ads, and Google's algorithms help ensure the ads reach those most likely to interact with the brand's message. Engagement Ads help advertisers qualify and connect with their target audiences while optimizing campaign costs.