First-click attribution is a model of digital marketing in which 100% of the credit of an online transaction goes to the first touchpoint in a customer journey. Online marketers can view a touchpoint as a traffic source, such as a web, mobile, or display ad.
First-click attribution is the most popular among single-touch attribution methods. It focuses on one single touchpoint and leaves out all others in assigning attribution. Primarily, Google Analytics has led to the last-click attribution model becoming the preferred method, as it’s more simple and convenient to measure. A popular model for attribution is the last-click model. It was first introduced by Google Analytics. This model is seen as superior because it excludes other sources of attribution that may have been touched, such as the first touch.