To effectively target audiences on the Google Display Network, follow these strategies: Demographic Targeting: Specify age, gender, household income, parental status, and other demographic attributes. Interest Targeting: Target users based on their interests and behaviors, such as hobbies, activities, and purchasing intentions. Topic Targeting: Select relevant topics related to your products or services to display ads on websites discussing those topics. Placement Targeting: Choose specific websites, apps, or placements within the GDN where you want your ads to appear. Remarketing: Target users who have previously visited your website or interacted with your ads, encouraging them to return and complete a conversion.