# Session events

Explore the session events category.

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Use the summary below to quickly jump to a specific topic:

- [Audience matched](/reference/event/types/session/audience-matched): Learn how to track when a user matches an audience.
- [Campaign detected](/reference/event/types/session/campaign-detected): Learn how to track when a campaign is detected.
- [Client detected](/reference/event/types/session/client-detected): Learn how to track information about devices and browsers.
- [Location detected](/reference/event/types/session/location-detected): Learn how to track the user's geolocation.
- [Session attributes changed](/reference/event/types/session/session-attributes-changed): Learn how to track changes to session attributes.
- [Session closed](/reference/event/types/session/session-closed): Learn how to track the end of a session.
- [Session merged](/reference/event/types/session/session-merged): Learn how to track the merge of two or more sessions.
- [Session started](/reference/event/types/session/session-started): Learn how to track the start of a session.