Read acquisition cost, lifetime value, payback, ROAS and attribution well enough to tell whether marketing spend is turning into profit and cash.
A marketing report can show a healthy acquisition cost, a 5 to 1 ratio and an 8x return while the business loses money on every new customer.
Most people outside marketing take the dashboard on trust, because each number arrives as one clean figure. Underneath sit choices: which costs were counted, who counts as a customer, how long customers are assumed to stay, and which channel gets credit for a sale. Ratios and targets borrowed from other companies make it harder, because they carry someone else's margins and someone else's customers.
You learn to rebuild the handful of numbers that decide whether marketing pays: acquisition cost with every cost in it, lifetime value and payback on gross profit, ROAS against your own margin, and attribution read for what it is. You start from your own figures, read the newest customers first, and use a test against a group that saw no ads to find out what the ads added.
Founders: approve marketing spend and want to judge the results without a marketing background.
Operators and finance leads: need to connect acquisition cost, lifetime value and payback to profit and cash.
Product and team leads: sit in campaign reviews and want to ask the question that separates a real result from a flattering one.
