> For the complete documentation index, see [llms.txt](https://doc.orbeon.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.orbeon.com/form-runner/architecture-and-integration/architecture.md).

# Architecture

## Basics

The Orbeon Forms architecture, viewed from the outside, is simple. It consists of Form Builder (the form editor) and Form Runner (the forms runtime), talking to a database (persistence layer). In addition, integration with a user management system is frequent.

![Overall architecture](https://4129616727-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LEkBiSDvlXs3VWiO0Zu%2F-LEkBmMpnaxnftLGDglW%2F-LEkC7Bivs5_Pb4bP7L1%2Farchitecture.png?generation=1528743364202571\&alt=media)

## Integration points

See [Form Runner Integration](/form-runner/architecture-and-integration/integration.md) and [Form Builder Integration](/form-builder/advanced/extensibility/integration.md).