.0 Framework
LTV = Σ (Margin_t × Retention_t × Discount rate)
9.1 Chiến Thuật
- Tiered welcome offer để giảm CAC 18 %.
- Program VIP day 90 tăng retention cohort 1.
- RFM‑driven look‑alike seed audience.
9.2 Dashboard KPI
| Metric | SLA | Alert |
| CAC Paid | < 450 K VND | > 500K Slack ping |
| LTV/CAC | > 4× | < 3× weekly review |
9.3 Chart Gợi Ý
- LTV cohort curve.
- CAC vs time scatter.
- Funnel Retention stacked.
