# LXD > This is the documentation for LXD, a system container and virtual machine manager. 2014-2026 AGPL-3.0, LXD contributors ## Pages in this subsection - [Remote API authorization](index.html.md): Explanation of LXD remote API authorization, including restricted TLS certificates and fine-grained authorization with permissions, identities, and groups. ## Optional - [Top-level llms.txt](../../llms.txt): Complete documentation index.