# Context, events and issues

Declare intent, add application measurements and track issue lifecycles.

Version coverage: /docs/reference/versions/

## Choose the information you need

These topics now have separate guides:

- [Application context](/docs/client-monitor-js/application-context/) explains expected media behavior, attachments, and application measurements.
- [Monitor events](/docs/client-monitor-js/monitor-events/) explains callbacks and application events.
- [Monitor issues](/docs/client-monitor-js/monitor-issues/) explains problem detection and recovery.