Affiliate tracking software describes the technology used to track or manage a myriad of affiliate marketing activities. Traditionally, affiliate tracking software provides the means to track performance based online marketing, or Cost Per Lead and Cost Per Action. There are many types of affiliate tracking software that can be utilized by a number of different business models, but it is perhaps most commonly associated with Affiliate Networks who use such a software platform to track and manage the activities of affiliates who are promoting campaigns from within the affiliate network.

Many online businesses also create their own affiliate networks in which they manage their own affiliate relationships to promote their products and services. Affiliate tracking software enables them to track conversions on their affiliates' sites.