Cost Per Click (CPC) is a key component of digital marketing, reflecting the cost of each user click on an ad. It’s widely used across platforms like Google Ads and social media to measure campaign success, manage ad spend, and enhance ROI. Factors like keyword quality, bidding strategies, and ad relevance affect CPC. To reduce costs, advertisers can focus on keyword optimization, improve ad quality and landing pages, conduct A/B testing, and manage budgets strategically.