# Session

> One visit to a website, from the moment a visitor arrives until the visit ends after a period of inactivity.

A **session** is one visit to a website. The session starts when a visitor arrives and ends after a period of inactivity. One visitor can generate many sessions.

## How AnyTrack counts sessions

In AnyTrack, a session starts when a visitor arrives on your site and ends after 30 minutes of inactivity (the default). When the same visitor returns after that inactivity window, AnyTrack starts a new session. For this reason, your session count can be higher than your visitor count.

The [Tracking Tag](/glossary/tracking-tag) opens the session. The [Campaign Report](/docs/advanced-options-campaign-report#available-metrics) shows the total in the **Sessions** column. When a visitor moves to a checkout on a different domain without [cross-domain tracking](/glossary/cross-domain-tracking), a new session starts.

Sessions also measure your plan usage. Monthly sessions are the total number of sessions from all properties in your account, and each plan includes a session cap. AnyTrack counts sessions, not events: 1 session with 200 events counts as 1 session. See [Monthly sessions](/docs/pricing-model#monthly-sessions).

## Session vs Link Click vs Event

- [Link Click](/glossary/link-click): Link Clicks are the clicks on the ad that the ad platform reports. Sessions are the visits that AnyTrack tracks on your site. The two numbers differ, because some clicks never reach the site.
- [Event](/glossary/event): a session is the visit, and events are the actions inside it. One session can contain many events.