KPI stands for Key Performance Indicator. It is a measurable value that demonstrates how effectively a company is achieving key business objectives. KPIs are used to track and evaluate the performance of a company, department, or individual in achieving specific goals. They help organizations to track progress and make data-driven decisions to improve performance.

Examples of KPIs in affiliate marketing include:
Conversion rate – the percentage of clicks that result in a sale or desired action.

Revenue – the amount of money generated through affiliate sales.

Average order value – the average value of each sale made through the affiliate program.

Cost per acquisition (CPA) – the cost of acquiring a new customer through the affiliate program.

Return on investment (ROI) – the amount of return generated from an investment in the affiliate program.

KPIs can vary depending on the specific goals and objectives of an affiliate program, but they are an essential tool for measuring success and making data-driven decisions to optimize performance.