To give some highlevel background before watching the video on the 3 components; OpenStack, juju and CEPH.
OpenStack: OpenStack, a cloud-computing project, aims to provide an infrastructure as a service (IaaS). It is free and open-source software released under the terms of the Apache License. The project is managed by the OpenStack Foundation, a non-profit corporate entity established in September 2012 to promote OpenStack software and its community.
juju: Juju (formerly Ensemble) is a service orchestration management tool developed by Canonical Ltd.. It is an open-source project hosted on Launchpad released under the Affero General Public License (AGPL). Juju concentrates on the notion of service, abstracting the notion of machine or server, and defines relations between those services that are automatically updated when two linked services observe a notable modification. This allows for services to very easily be up and down scaled through the call of a single command. For example, a web service described as a Juju charm that has an established relation with a load balancer can be scaled horizontally with a single juju "add-unit" call, without having to worry about re-configuring the load-balancer to declare the new instances: the charm's event based relations will take care of that.
CEPH: Ceph is a free software storage platform designed to present object, block, and file storage from a single distributed computer cluster. Ceph's main goals are to be completely distributed without a single point of failure, scalable to the exabyte level, and freely-available. The data is replicated, making it fault tolerant.
In case you want to view the slides about the presentation deploying openstack and CEP with Juju at your own speed and comfort please find the slides below as they are shared on slideshare.