Google Ads is Google’s online advertising platform that allows businesses to promote their products or services across Google Search, YouTube, partner websites, and apps. It works on a pay-per-click (PPC) model, meaning advertisers pay only when users click on their ads. Through a bidding system and quality scoring, ads are shown to relevant audiences based on factors like keywords, location, demographics, and user behavior. Businesses can choose from various campaign types, such as search ads, display ads, video ads, shopping ads, and app promotion ads, offering flexibility for different goals.