KPI (Key Performance Indicator): In digital marketing, a Key Performance Indicator (KPI) is a measurable value that demonstrates how effectively a company is achieving key business objectives. Organizations use KPIs at multiple levels to evaluate their success at reaching targets. High-level KPIs may focus on the overall performance of the business, while low-level KPIs may center on processes in departments such as sales, marketing, HR, support, and others. In the context of digital marketing, common KPIs include metrics like website traffic, conversion rates, clicks, engagement rates, and ROI. These indicators help marketers assess the effectiveness of their strategies and campaigns in achieving their marketing goals.