Paid Search

CPA (Cost Per Acquisition)

CPA is the average cost to win one conversion, calculated as total spend divided by the number of conversions.

It is the metric most directly tied to profitability, since it shows what each customer or lead actually costs to acquire. For example, spending 10,000 baht to generate 20 leads is a CPA of 500 baht. A campaign with cheap clicks but high CPA usually points to a weak landing page or poor targeting.