OpenNebula provides the infrastructure, the Virtual Machines themselves. But what if you want to deploy applications on those VMs? What is the best method to achieve that? This session is a case study on how we have been using OpenNebula and OneFlow to deploy multi-VM services, and how we have integratet it with Ansible in order to deploy applications. This is a technical talk where we will look a bit at some Ruby code to integrate with Ansible, a bit of Ansible specific information and with a special focus on application deployment workflows.