Google AdSense is an advertising program that allows website owners to earn money by displaying ads on their sites. When visitors click on these ads, the website owner receives a portion of the revenue generated. The ads are usually relevant to the content of the website, making them more appealing to users. To get started with Google AdSense, website owners need to sign up and get their site approved. Once approved, they can customize the ad formats and placements to fit their site’s design. This program is popular among bloggers and content creators looking to monetize their online presence.