Ad network is a platform that connects advertisers with websites that want to host advertisements. It helps automate the process of purchasing ads across multiple sites.
It aggregates inventory from multiple publishers and offers it to advertisers, often using audience targeting and data analytics to maximize campaign effectiveness. For example, Google Display Network allows advertisers to reach users across millions of websites.
Ad networks simplify scaling campaigns by providing access to a wide range of audiences in one place. They support various ad formats, such as banners, videos, or native ads, ensuring flexibility. Choosing the right ad network depends on campaign goals, budget, and the desired audience reach for optimal results.