Systems and methods are provided for presenting ad content with electronic content. In one implementation a method is provided that includes receiving, from a user device, a request that identifies a segment of electronic content, and selecting a set of ad metadata for the identified segment of electronic content, the selected set of ad metadata including information defining how ad content is to be presented. The method also includes selecting a set of content metadata for the identified segment of electronic content, the selected set of content metadata including information related to presenting the segment of electronic content, and instructing the user device to generate a presentation based on the selected set of ad metadata and the selected set of content metadata, the presentation including the segment of electronic content and at least one ad content element.