> For the complete documentation index, see [llms.txt](https://docs.amply.tools/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.amply.tools/concepts.md).

# Concepts

- [Scenarios and campaigns](https://docs.amply.tools/concepts/scenarios-and-campaigns.md)
- [Sessions and events](https://docs.amply.tools/concepts/sessions-and-events.md)
- [Targeting and audiences](https://docs.amply.tools/concepts/targeting-and-audiences.md)
- [User attributes](https://docs.amply.tools/concepts/user-attributes.md)
- [Campaign delivery](https://docs.amply.tools/concepts/campaign-delivery.md)
- [Campaign actions](https://docs.amply.tools/concepts/campaign-actions.md)
- [Gating an action](https://docs.amply.tools/concepts/gating-an-action.md)