[Evaluate learners' understanding of the balance between customer acquisition cost (CAC) and customer lifetime value (LTV) in subscription businesses. Scope includes definitions and calculation methods for CAC and LTV, cohort and churn analysis, unit economics (LTV:CAC ratio, payback period, contribution margin), effects of pricing and segmentation, channel trade-offs, and strategic decision-making to optimize growth versus profitability using quantitative examples and scenario interpretation.]