# Reference Technical specifications, APIs, and comprehensive details of all JAAS components. ## Platform JAAS is a multi-controller orchestration platform that coordinates Juju controllers and enhances resource management across cloud deployments. - [JAAS](https://documentation.ubuntu.com/jaas/latest/reference/jaas.md#jaas) - [Supported Juju versions](https://documentation.ubuntu.com/jaas/latest/reference/jaas/jaas-supported-juju-versions.md#jaas-supported-juju-versions) ## Plugin You interact with JAAS through the JAAS plugin – a CLI extension that provides commands for managing multi-controller deployments and access control. JAAS provides audit logging for tracking operations and changes across all managed controllers. - [jaas plugin](https://documentation.ubuntu.com/jaas/latest/reference/jaas-plugin.md) - [Audit logs](https://documentation.ubuntu.com/jaas/latest/reference/audit-logs.md#audit-logs) ## JIMM controller JIMM (Juju Intelligent Model Manager) is the server component that powers JAAS, providing the central controller that coordinates multiple Juju controllers. - [`jimm` charm](https://charmhub.io/juju-jimm-k8s) ## Users JAAS extends Juju’s authentication with groups and roles, providing fine-grained access control for users across multiple controllers. - [User](https://documentation.ubuntu.com/jaas/latest/reference/user.md#user) - [Group](https://documentation.ubuntu.com/jaas/latest/reference/group.md#group) - [Role](https://documentation.ubuntu.com/jaas/latest/reference/role.md#role) ## Infrastructure and applications JAAS manages Juju entities – controllers, models, clouds, and offers – with multi-controller coordination and centralized access control. - [Controller](https://documentation.ubuntu.com/jaas/latest/reference/controller.md#controller) - [Model](https://documentation.ubuntu.com/jaas/latest/reference/model.md#model) - [Cloud](https://documentation.ubuntu.com/jaas/latest/reference/cloud.md#cloud) - [Offer](https://documentation.ubuntu.com/jaas/latest/reference/offer.md#offer)