Session duration refers to the length of time a user spends on a website or application during a single visit. It is measured from the moment the user arrives until they leave or become inactive for a specified period. This metric helps website owners understand user engagement and the effectiveness of their content. Analyzing session duration can provide insights into user behavior, such as how interesting or relevant the content is to visitors. A longer session duration often indicates that users are finding value in the website or app, while a shorter duration may suggest that improvements are needed to retain user attention.