# Data types

Explore the data types associated with session and events.

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

- [Event context](/reference/event/data-types/context): Learn about the event context.
- [Session](/reference/event/data-types/session): Learn about event sessions.
- [Campaign](/reference/event/data-types/campaign): Learn about the type that represents a marketing campaign.
- [Client](/reference/event/data-types/client): Learn about the type that represents the device and software used to access the application.
- [Location](/reference/event/data-types/location): Learn about the type that represents a geographic location.