Advertisements on a website that occupy one banner position and are displayed on rotation. The rotation might be on a page load basis or may be configured to display more than one ad per page view. The control of this rotation is defined within the ad management system used by the website owner. The aims of Ad Rotation are to allow publishing space for numerous advertisers, renewal of individual adverts and the opportunity for multiple advertisement loads per page.

See also:
Ad impression
Cost per thousand (CPM)
Cost per click (CPC)
Behavioural Targeting
Contextual Marketing
E-Marketing
User Session