Understanding ROAS, CAC and LTV

Marketing economics is rarely a single-lever problem. Most businesses already have the ingredients — traffic, a product people want, a team that cares. What is usually missing is a sequence: the order in which decisions get made and measured.

Start with the constraint

Before adding budget or channels, find the one number holding everything else back. It is almost always further down the funnel than people expect, which is good news — downstream fixes are cheaper than upstream spend.

• ROAS measures efficiency, not profitability
• CAC only matters relative to gross margin
• LTV should be modelled conservatively, not optimistically
• Blended numbers keep channel teams honest

Growth is not a bigger megaphone. It is a shorter distance between attention and action.

Make the next decision measurable

Every change should come with a stated expectation and a review date. Marketing becomes compounding work when the team can point at what was learned last month, not just what was launched.

Where to go from here

Pick one constraint, one metric and one review cadence. Run it for a full cycle before adding anything new. That discipline is what separates a growth engine from a busy marketing calendar.