CPC (Cost per click)
Advertising model where the marketer pays for a specific user action, such as account registration, social sharing, purchase, or a reservation instead of paying for installs, views or clicks.
Creating a successful CPC (Cost Per Click) campaign is a challenging task that requires a lot of fine-tuning and planning. The best way to optimize this would be to thoroughly analyze the different ad groups of your campaigns.
The keywords that form the basis of CPC (Cost Per Click) should be the first places you check. The popular keywords that your competitors frequently use, the analysis of competitive keywords (the keywords that you can spend more money on; the keywords that are competitive but you will get more conversions) and keywords that your target audience searches frequently should be researched.
It is a common way of working. The best example is Google Adwords ads. You pay a price for each click on your site.