One of the most common reflexes in e-commerce is to increase the advertising budget when the revenue target is not met. The logic is correct at first glance: more people come to the site, more people buy.
But this approach works under one condition: The existing system must be converting incoming demand into sales with a reasonable efficiency.
For example, in a store that receives 100,000 monthly visits, if the purchase conversion is 0.5%, 500 orders will be created. When you increase the same system to 150,000 visits, if the conversion does not change, the number of orders increases to 750; but at the same time, the advertising cost, support load, and number of abandoned sessions also increase. If the problem is in the product page, payment step or offer structure, increasing traffic will not eliminate the problem.
Therefore the correct question is:
“Do we need more traffic, or does existing traffic stop converting into revenue at a certain step?