# 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 - [The LXD Dqlite database](index.html.md): Explanation of the LXD Dqlite database, which stores server configuration and state for both single machines and clusters. ## Optional - [Top-level llms.txt](../llms.txt): Complete documentation index.