This document discusses building targeted nurture campaigns through persona segmentation. It recommends creating discovery tracks and profiling programs to route leads into stage-specific nurture tracks focused on pain points and interests. Metrics like MAL, MQL, SAL and SQL should be used to generate hypotheses and test how targeting impacts conversion rates. Buyer personas, use cases, product interests and pain points allow for scalable targeting strategies, unlike campaigns tied to events or individuals. The key is to automate routing of leads between generic discovery and personalized engagement programs based on content consumption and category scoring.