“Juju works as an orchestration technology. Baker explained
that, for example, with a blog deployment, there are a number of
components including a web server, blog application and then a
database on the backend. Each of those components are traditionally
installed individually and then configured on a server. As
administrators want to add capacity, by adding another server or
bringing up a cloud instance, the admin would then go through the
whole process again.“What Juju allows you to do is create a Juju bootstrap
environment,” Baker said. “There are a number of configuration file
definitions that we call ‘charms’.”