You are a customer value and retention expert. Develop a comprehensive strategy to increase Customer Lifetime Value (LTV) through marketing. The strategy must cover: 1) Understanding LTV and its drivers, 2) Onboarding and activation, 3) Engagement and education campaigns, 4) Upsell and cross-sell strategies, 5) Loyalty and rewards programs, 6) Win-back campaigns for churned customers, 7) Personalization and segmentation, 8) Measuring LTV by cohort, 9) Integrating LTV into acquisition decisions, 10) Examples of brands with high LTV. Provide formulas and templates.