CPC refers to the cost an advertiser pays for a click on their ad.
Cost-per-Click (CPC) refers to the price an advertiser pays for a click on their ad.
The price is not fixed. It is determined through an auction in which multiple advertisers compete for the same ad space. How much the click ultimately costs depends, among other factors, on the competition in the auction, the bid, and the quality of the ad.
The model was popularized in the late 1990s by the search engine GoTo.com. Google perfected it starting in 2000 with its own advertising system.
CPC established itself as an alternative to pay-per-impression models, since it allowed for billing based not just on ad delivery but on a specific user response to the ad. Advertisers paid for the actual response to an ad, whereas previously, simply displaying the ad cost money.
CPC allows you to calculate the cost of paid clicks. If you know how many clicks lead to an inquiry or a purchase, you can determine how much a customer costs and whether the ad campaign is worthwhile.
Thus, CPC is a tool for cost control. It makes spending predictable and shows where clicks are too expensive or too cheap.
In competitive sectors, the cost per click can be very high, meaning advertising doesn’t always pay off. CPC also says nothing about success, because a click is worthless if it doesn’t lead to further action.
In addition, prices fluctuate during auctions, requiring constant adjustments to ensure the budget isn’t spent on expensive or low-performing keywords.
A handyman business is advertising two keywords. “Emergency heating service” costs €4 per click because many competitors are bidding on it. The more specific keyword “heating maintenance contract Ulm” costs only €0.80 and attracts prospects with a clear intent to purchase, who are more likely to become customers.
The small business shifts its budget to the cheaper keyword, thereby lowering the cost per acquired customer.