Session Duration in SEO refers to the total amount of time a user spends actively engaged on a website during a single visit or session. It measures how long visitors stay on your site before leaving or becoming inactive, providing insights into user engagement and content effectiveness.
Synonyms: visit duration, user session length, time on site, session time

Session Duration is a key metric that helps website owners understand how engaging and valuable their content is to visitors. Longer session durations often indicate that users find the content interesting and useful, which can positively influence search engine rankings.
Marketers and SEO professionals use Session Duration data to analyze user behavior, identify popular content, and optimize website design and content strategy. Improving session duration can lead to better user experience and higher chances of conversions.
If a visitor lands on a blog post and spends 5 minutes reading it before navigating to another page or leaving, the session duration is 5 minutes. Conversely, if a visitor quickly leaves the site after a few seconds, the session duration is very short, indicating low engagement.