In this chapter, we learnt about the different components of OpenStack and OpenDaylight. We started with an overview of OpenStack and its different components, such as networking, identity, storage, and other core components.

OpenStack is a broad, complex project, aimed at for a virtualized datacenter. Therefore, we kept our focus on Networking in OpenStack and the different Plugins that interact with the physical network. In the section that followed, we used DevStack and TryStack to look at examples of OpenStack.
The OpenDaylight project is an open source project founded in 2013 to promote software-defined networking and network functions virtualization. The project provides an abstraction layer that provides both northbound and southbound interfaces, which allows multi-vendor compatibility. We took a high level view of the components of OpenDaylight, as well as using the Virtual Machine to construct a Hub application using the OpenDaylight controller.
In the next chapter, we will combine all our knowledge from the previous chapters and examine SDN in the real world; we'll explore how we can move from a legacy-based network into perhaps an SDN-based, flexible, and programmable network.