What function does an advertising network serve?

An advertising network serves the essential function of connecting advertisers with publishers to facilitate the buying and selling of ad inventory. This connection allows advertisers to reach a broad audience by placing ads on various websites and platforms, while publishers can monetize their digital spaces by selling available ad space. The network acts as an intermediary that simplifies the process for both parties, helping advertisers find suitable placements for their ads and enabling publishers to fill their inventory without the need to manage multiple direct relationships.

The other options describe functions that are not typically associated with the overarching role of an advertising network. While some networks may engage in creative development or target specific demographics, these activities do not encapsulate the primary function of connecting advertisers with publishers for inventory transactions. Similarly, real-time bidding is a mechanism often associated with demand-side platforms rather than the broader scope of what an advertising network does.