"Its time to face the music: There's only a couple guys in Ops, and a lot of infrastructure to set up and it was all due yesterday. If only you could clone all the sysadmins of the world to get all of their expertise and know-how in deploying open source applications, you could actually get it done. Perhaps there is a way: Juju and Charms! Juju encapsulates services in a way that promotes sharing and collaboration the same way packages have done for open source software.
If you are a sysadmin or a developer who is looking to get an infrastructure of databases, loadbalancers, and webapps up to speed rapidly, Juju may be interesting. If you are looking into deploying something massively scalable, like OpenStack or Hadoop, Juju is built to handle that task."