User Session
A user session is a period of user activity on a website or in an application, starting from the moment of entry and ending when the person stops interacting with the resource. The session records all actions during this interval: page visits, clicks, events, purchases, views, etc.
What is a User Session
A user session is a logically unified visit to a website or application. It allows analytics systems to understand precisely how a person interacts with the resource: which pages they viewed, how much time they spent, what actions they took, where they clicked, and whether they completed a target action.
Example:
A user visits a website, views three pages, adds an item to the cart, and leaves—all of this constitutes one session.
When a Session Begins and Ends
A session begins when a user first visits the website or opens the application.
It ends if:
- There is no activity for a defined period (usually 30 minutes),
- The user closes the browser,
- The traffic source changes (in some systems, this triggers a new session),
- A 24-hour period passes (in Google Analytics).
What Data a Session Includes
- Pages viewed by the user.
- Sequence of page visits (user flow).
- Time spent on the site.
- Clicks and actions.
- Traffic sources.
- Events: adding to cart, form submission, purchase.
- Device and browser information.
- Geolocation.
Why Analyze User Sessions
- Understand Audience Behavior: Sessions help see which pages attract attention, where users most often leave, and what interests them.
- Optimize Conversion: If it’s evident that most users drop off at a specific step, that stage can be improved.
- Evaluate Effectiveness of Advertising Channels: Sessions show the quality of traffic from each source.
- Identify Technical Issues: Unusually short or abruptly ended sessions may indicate bugs or UX problems.
Where to View User Session Data
- Google Analytics / GA4
- Yandex.Metrica (especially via Webvisor)
- Roistat
- Mixpanel
- Amplitude
- Hotjar
These systems display both aggregated data and detailed session recordings.
How to Interpret Session Metrics
- Number of Sessions: How many times users interacted with the site.
- Session Duration: How long users stay on average.
- Pages per Session: How many pages are viewed.
- Bounce Rate: The percentage of sessions where the user leaves after viewing only one page.
- Conversions within a Session: Whether users complete target actions.
Conclusion
A user session is a crucial analytics metric that helps understand audience behavior and improve the effectiveness of a website or application. Session analysis is used to increase conversion, enhance UX, fix errors, and assess traffic quality.
A good understanding of user sessions is the foundation of competent web analytics.
