CPC (Cost-Per-Click) is a straightforward concept. It should not be confused with Cost Per Visit, which is similar in nature. The actual click determines the cost for ad platforms when using the "CPC" model. On the other hand, Cost Per Visit is a metric you calculate based on the charges you incurred and the number of actual visits you received. It's important to note that some users may click on the ad but never reach the intended page for various reasons.