Oracle White paper
"An easy-to-access computing utility, with on-demand compute, storage, and network resources, has
always been the promise of cloud computing. While server and storage virtualization technologies
have been available for some time, network virtualization now adds another dimension of agility and
scalability to cloud infrastructures.
By virtualizing the network, the enterprise data center avoids having to configure fixed network silos
with specialized service appliances. Instead, the network, subnetworks, and network services can be
configured and reconfigured as needed in software. In a cloud-enabled data center, essential network
functions, such as firewalls, network address translation (NAT), load balancing, and virtual private
network (VPN), must be as virtualized as compute and storage resources. Oracle SDN virtual network
services fulfill this requirement..."
(Get More Information . .)