It is an all-in-one, simple, modular, rapid

prototype and development environment that yields results with a smaller

codebase.

It is provides the

control plane for a software-defined network (SDN), managing network

components, such as switches and links, and running software programs or

modules to provide communication services to end hosts and neighboring

networks.

It is programmability,

centralized intelligence, and how it abstracts network architecture.

It is an open,

software-defined networking (SDN) Controller designed to increase the agility

of the network by making it easy to manage and adapt how traffic is handled.