Juju is a Package Manager, service orchestration management tool developed by Canonical for development of Cloud Computing of your own. Juju was formerly known as Ensemble. This free tool Juju is developed by Canonical Ltd.so it is an open source project, closely related to Ubuntu and is hosted on Launchpad. Juju is released under the Affero General Public License (AGPL).
Please read more- Juju Package Manager for Cloud Computing