In a nutshell, incrementality in marketing measures the actual impact that a marketing activity has on an app’s KPIs such as installs or IAPs.
Traditional incrementality measurement involves control groups and test groups. Using this methodology, the test group is exposed to the campaign while the control group is not. By comparing the performance of both groups, marketers can determine the incremental lift generated by the campaign.
However, A/B testing can be expensive and time-consuming for marketers to perform. Plus, it’s growing increasingly difficult to implement the level of detail needed for incrementality A/B tests with privacy regulations.