Marketing Tool Stackby Amit Gupta
← All sections

Campaign ROI & Analytics

This section covers how to measure whether marketing pays off: calculating campaign ROI and ROMI, the difference between ROI and ROAS, customer acquisition cost (CAC), lifetime value (LTV), the LTV:CAC ratio, CAC payback period, and CPL versus CPA, each explained with formulas and plain examples.

Guides in this section

Why it matters

Campaign ROI and analytics turn marketing from a cost center into an accountable investment: they tell you which programs return more than they consume and which quietly lose money. Without shared definitions, teams talk past each other. One person's "ROI" is another's ROAS, and a low CAC can still be a bad deal if customers churn before they pay it back. The metrics in this section work together. ROI and ROMI judge a campaign's net return, ROAS tracks ad-spend efficiency, CAC measures what acquisition costs, and LTV estimates what a customer is worth over their relationship with you. Comparing LTV to CAC, and checking how quickly CAC is recovered, shows whether growth is sustainable rather than just fast. Used consistently, these numbers let you defend budgets, reallocate spend toward what works, and forecast with far more confidence.

Last updated: 14 June 2026