Certain key performance indicators, also known as KPIs, that analyze the efficacy of online campaigns are implemented for measuring the success of digital marketing. These indicators include cost per acquisition (a certified public accountant), which analyzes the average cost to acquire a fresh customer, click-through rate (conversion rate), a sign of how satisfied customers are with ads and links, and conversion rate, which measures the percentage of individuals completing the actions they want to take. The profitability of a campaign in relation to the total investment can be determined by return on investment, or ROI. The revenue earned by a client during their lifetime is estimated by their customer lifetime value, or CLV. Campaign performance and participation by the public are also reflected in website traffic, metrics for participation (likes and shares), email open and click fees, Facebook and Twitter followers, etc bounce rates. Marketers could enhance audience targeting, optimize methods, or enhance results from campaigns through investigating these variables.