Virtualization and Cloud Orchestration Software solved only part of the cloud puzzle. Where we are now able to effectively orchestrate compute and storage resource, more often than not the network engineer is still trying to keep up with his telnet or ssh based consoles. Software Defined Networking is one of the solution that will bring the last infrastructure bit, networking, into the cloud era. This talk will start with a short background on software defined networking and than dive into the technical details. It discussed how SDN integration was done in cloudstack and the various implementations that are currently supported by there. This talk updates the listeners on what changes have been made in CloudStack to support newer types of software defined networking and what inroads we are making at supporting network function virtualization.