Abstract: Techniques for generating a multidimensional forecast are provided. In one technique, multiple segments are generated, each comprising a different set of attribute values. For each segment, a set of prior content requests for the segment is determined based on historical data, a forecasted number of content requests is determined based on the set of prior content requests, and the forecasted number of content requests is stored in association with a set of attribute values corresponding to the segment. A request is received to forecast performance of a content delivery campaign based on a particular set of attribute values. In response to receiving the request, multiple segments that share the particular set of attribute values are identified. The forecasted number of content requests associated with each segment of the multiple segments are aggregated to generate aggregated performance data. A portion of the aggregated performance data is caused to be displayed.