# JAAS

> JAAS is an enterprise layer on top of Juju that provides centralized controller management, OIDC authentication, and ReBAC authorization.


2026 CC-BY-SA, Canonical Group Ltd

## Pages in this subsection

- [Reference architecture](https://documentation.ubuntu.com/jaas/latest/explanation/reference-architecture.md): JAAS reference architecture covering automation, OAuth2/OIDC authentication, ReBAC authorization, Juju CLI, and Terraform Provider integration.

## Optional

- [Top-level llms.txt](https://documentation.ubuntu.com/jaas/latest/llms.txt): Complete documentation index.