Ads on YouTube operate through targeted placements. Advertisers create video ads to reach specific audiences. They use Google Ads to set up their campaigns. Advertisers can choose demographics like age and location. Keywords help match ads with relevant content. TrueView ads allow viewers to skip after five seconds. Non-skippable ads require full viewing before the main video. Brands can retarget users who have interacted with their content. Performance metrics help advertisers track success. Analytics provide insights into viewer engagement and conversion rates. Effective targeting increases the chances of reaching interested viewers and driving sales.