As marketers, we are always looking for ways to measure the effectiveness of our advertising campaigns. Traditionally, we have relied on metrics such as return on ad spend (ROAS) to gauge the success of our marketing efforts. However, with the introduction of iOS 14 updates, it has become increasingly challenging to determine the true ROAS of campaigns. This has led forward-thinking marketers to explore new key performance indicators (KPIs) that can provide a better understanding of the efficiency of their marketing decisions. It is important that marketers realize there is no “one-size-fits-all” metric for them to measure their success; they should have a toolbox of metrics they use to measure their unique business use cases.