CPL stands for "Cost Per Lead," a marketing metric that measures the cost associated with acquiring a potential customer or lead. It is commonly used in digital advertising to evaluate the effectiveness of campaigns. Advertisers calculate CPL by dividing the total cost of a campaign by the number of leads generated, helping businesses understand their return on investment. In the context of online marketing, CPL is crucial for businesses aiming to optimize their advertising strategies. By analyzing CPL, companies can adjust their campaigns to improve lead generation and reduce costs. This metric is particularly relevant for industries like real estate, insurance, and software sales, where lead generation is essential for growth.