# 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 - [Amazon EC2](https://documentation.ubuntu.com/juju/4.0/reference/cloud/list-of-supported-clouds/amazon-ec2.md): Configure and use Amazon EC2 cloud with Juju, including authentication types, instance roles, and machine cloud-specific requirements. ## Optional - [Top-level llms.txt](https://documentation.ubuntu.com/juju/4.0/llms.txt): Complete documentation index.