# Explanation Discussion and clarification of key JAAS topics, including architectural details, security models, and deployment considerations. ## Architecture and deployment High-level and detailed views of JAAS components, deployment patterns, and scalability. - [Reference architecture](https://documentation.ubuntu.com/jaas/latest/explanation/reference-architecture.md#reference-architecture) - [Architecture](https://documentation.ubuntu.com/jaas/latest/explanation/jaas-architecture.md#jaas-architecture) ## Access and security Authentication, authorization, and security considerations for JAAS deployments. - [Authentication](https://documentation.ubuntu.com/jaas/latest/explanation/jaas-authentication.md#jaas-authentication) - [Authorization](https://documentation.ubuntu.com/jaas/latest/explanation/jaas-authorization.md#jaas-authorization) - [ReBAC admin backend](https://documentation.ubuntu.com/jaas/latest/explanation/jaas-rebac-admin-backend.md#jaas-rebac-admin-backend) - [Security overview](https://documentation.ubuntu.com/jaas/latest/explanation/jaas-security.md#jaas-security-overview) - [Security scope](https://documentation.ubuntu.com/jaas/latest/explanation/jaas-security-scope.md#jaas-security-scope)