> For the complete documentation index, see [llms.txt](https://manual.bubble.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.bubble.io/core-resources/bubble-workflows/bubble-events/backend-event-properties.md).

# Backend event properties

Backend events are workflows that run on the server rather than in the user’s browser. They are configured in the backend workflow editor and can run independently of user interaction.

<table><thead><tr><th width="186.15234375">Event</th><th>Description</th><th>Link</th></tr></thead><tbody><tr><td><strong>API workflow</strong></td><td>API workflows are workflows that run on the server rather than in the browser. They can run in the background, be scheduled for a future time, or be triggered from outside your app entirely.</td><td><a data-mention href="/pages/QT2BQ2gOa929o0uTqX6U">/pages/QT2BQ2gOa929o0uTqX6U</a></td></tr><tr><td><strong>A thing is modified</strong></td><td>Triggers when specific data in the database is changed.</td><td><a data-mention href="/pages/S5WHascKwAS1Jq05tHic">/pages/S5WHascKwAS1Jq05tHic</a></td></tr><tr><td><strong>Recurring event</strong></td><td>Trigger at the a set interval, such as daily, weekly or monthly.</td><td><a data-mention href="/pages/OCOBqNaZqSDRcVbi0o7T">/pages/OCOBqNaZqSDRcVbi0o7T</a></td></tr></tbody></table>