An ad server stores advertisements and places them on websites for visitors. Its content is updated regularly so fresh ads can be served to visitors every time they refresh their pages. The technology and service used to do this is called the ad serving technology. Ad servers play an important role in the online world of advertising. These are critical in choosing the right ads according to user preferences, counting these ads, and monitoring various ad campaigns. Since a website owner gains revenues from advertising businesses, they prefer to have their own ad servers in order to support them.
