Computer Aided Advertising System (CAAC) are expert systems with which advertising can be analyzed. CAAC became known as part of a research project at the University of Saarbrücken under the direction of
Werner Kroeber-Riel. The aim of CAAC activities is to evaluate the advertising impact of different advertising media. CAAC systems can be used for all advertising media: for advertisements in print media, radio advertising and television advertising and also for the evaluation of online advertising. CAAC forms an evaluation system that can also assess the advertising impact preventively and thus help to reduce unnecessary print or media costs.