# Juju > Juju is an open source orchestration engine for deploying, integrating, and managing applications across Kubernetes, VMs, and bare metal using software operators called charms. 2026 CC-BY-SA, Canonical Ltd. ## Pages in this subsection - [Create a new MongoDB collection](https://documentation.ubuntu.com/juju/3.6/contributor/howto/create-new-mongo-db-collection.md): Add new MongoDB collections to Juju's state package, define entity structures, and implement proper document validation patterns. ## Optional - [Top-level llms.txt](https://documentation.ubuntu.com/juju/3.6/llms.txt): Complete documentation index.