A combination of two or more online marketing payment models.
A hybrid campaign might be a mix of impression-based (CPM) and performance-based (CPC or CPA), or a mix of two performance-based models. Hybrid deals are sometimes seen as a way to further split the risk between publishers and advertisers.
Advertising campaigns sometimes bundle CPM and CPC in a hybrid buy, and sometimes even CPA.
Affiliate programs have been known to offer a few cents per-click in addition to paying for a sale, lead, download, or other conversion activity.
see also: Digital Marketing Tools