Most lifecycle marketing teams struggle to demonstrate their impact because they try to measure it like demand generation. The author argues that lifecycle marketing is effective, but teams often miss out on recognition due to their focus on perfect attribution rather than tracking behavior changes. In B2B lifecycle marketing, behavior change is crucial. Examples of impactful behavior include adopting previously unused features, reducing time-to-value, asking meaningful questions, and re-engaging before churn risks appear. These behaviors signal value even if they don’t immediately correlate to revenue on dashboards. To make measuring impact more manageable, the author recommends a few strategies. First, focus on one significant behavior rather than generic metrics like opens or clicks. Look for indicators of progress, such as completed setup steps or meaningful customer interactions. Second, use cohort comparisons instead of campaign analysis. Group users who received lifecycle nudges against similar users who didn’t, then track whether the nudge led to faster or more sustained behavior. Third, differentiate between leading, middle, and lagging metrics to capture the layers of lifecycle impact. For instance, leading metrics reflect immediate responses to nudges, while lagging metrics take longer to materialize. The conversation highlights a common pitfall: treating lifecycle marketing as a simple traffic channel instead of a comprehensive behavior system. The focus should be on how customer behavior shifts, as these changes indicate value creation long before revenue appears. The author emphasizes that acknowledging and measuring these shifts can lead to more meaningful discussions about impact, making it easier for teams to defend their strategies and contributions within the organization.