Google's revenue is largely fueled by advertising on its Search platform, generating $44 billion in Q3 alone. While Google claims to display ads on only 20% of ""commercial queries,"" these searches linked to financial transactions are where the company profits. For non-commercial searches like ""prime minister of India,"" no ads appear, but searches like ""Taj Mahal"" prompt booking ads, while ""best places to visit in Agra"" showcases sophisticated advertising. Businesses can reach customers through Google products like Search or YouTube, and can also buy ad space on partner sites, with most of the proceeds funding content. For instance, searches for the iPhone, insurance, and cheap flights all contribute to Google's revenue. Notably, Google earns through the ""cost per click"" model, where advertisers pay when users click their links, especially for specific queries like ""iPhone 15 on Amazon,"" potentially leading to direct purchases.