A key metric in digital advertising that represents the amount an advertiser pays for each click on their ad (See [[Click-Through Rate (CTR)]]). It is widely used in search engine marketing and social media advertising to evaluate the cost-effectiveness of campaigns and optimize budgets accordingly. ### Importance of CPC - Helps advertisers measure the efficiency of their ad spend. - Provides insight into the cost-effectiveness of different ad campaigns. - Directly impacts return on investment (ROI) for paid advertising efforts.