An Ad Unit is container or area on a website dedicated to advertising. Each Ad Unit will have a Viralize Video Player that can deliver video advertising Campaigns and original content from the Viralize video library.
A format refers to the manner in which a Campaign performs. Advertisers choose their Campaign format from a number of available options during the campaign launch. Publishers are able to choose what format(s) they include on their site. If a Publisher limits the type of Campaign format they distribute, they will proportionately reduce the number of Campaigns available for distribution.
We suggest that you embed one Ad Unit on your Site for each available format.
To learn more about the format options Viralize offers, please visit the page Ad Formats.