A promotion produces a sharp increase in orders, and the sales chart looks persuasive. The following month is quieter because customers bought early. The business may still have gained something useful, but the initial surge alone cannot explain it. Commercial evaluation needs to follow demand beyond the promotional window and into ordinary trading.
Choose the intended effect
A discount might introduce a product, clear ageing stock or encourage a customer to try a larger order. Each objective calls for a different measure. Treating every promotion as a revenue-growth exercise can hide whether the business achieved its actual purpose and whether the benefit justified the margin it surrendered to customers.
Watch the substitution
Buyers may switch from a full-price product to the promoted item rather than increase their total spending. A distributor may stock up without increasing sales to end users. These effects do not make the campaign worthless, but they change the economic interpretation. The comparison should include the products and periods most likely to be displaced.
Include the operating cost
Extra orders can create overtime, rushed deliveries and later returns. Those costs may sit outside the sales budget, making the campaign appear stronger than it was for the enterprise. A short cross-functional review can connect the promotional result to fulfilment and collections, especially where the offer encouraged unusually large or complex orders.
Learn before repeating
The next campaign should preserve what worked and adjust the feature that merely shifted timing. A smaller incentive or narrower customer group may create better economics. Repetition becomes a commercial choice when management can explain who changed behaviour, what that change was worth and how much of the apparent growth would have happened anyway.
