From the metal of public clouds like HP Cloud to the “small” hosted infrastructure of today’s startups like Instagram, Ubuntu Server has proven itself to be the #1 OS for the cloud. Ubuntu Cloud's core consists of a number of integrated technologies: OpenStack, MAAS, Juju, LXC, Ubuntu Cloud images. By gluing together these different components of the stack, Ubuntu can provide both operations and developers a unified process to deploy their infrastructure. Developers can then test applications on local machines and deploy it to the cloud with the same tools used to build the cloud.This technical talk is for devops and will give a deep technical overview of these components and their integration points. As an example use case, we'll take a look at how the Ubuntu Server team at Canonical leverages MAAS and Juju to drive their continuous-integration and development efforts around OpenStack.