The text is the first in a two-part series on enhancing lead enrichment beyond the sales funnel, focusing on identifying and leveraging a product's Key Activation Event (KAE) to boost customer retention and loyalty. The KAE is a specific moment when users begin to appreciate the product's value, and examples include sending a campaign in Mailchimp or booking a favorite listing on Airbnb. The process to determine a KAE involves defining business objectives, mapping the onboarding process, identifying discrete events, and evaluating their impact on user retention using statistical measures like the phi coefficient. By comparing the r-values of these events, businesses can identify the event most strongly associated with long-term user engagement and adjust their onboarding strategies to emphasize it, thereby improving customer lifetime value and reducing churn. The text uses a photo-sharing platform as an illustrative example, eventually identifying social media integration and inviting contacts as a key event for fostering loyalty. The ultimate goal is to create a more engaging onboarding experience that bridges the gap between new sign-ups and satisfied, long-term users, leading to increased revenue.