SDN Needs Versatile Northbound APIs for Cloud Integration
WANs using SDN are getting tighter integration with cloud providers' XaaS platforms by putting APIs into their SDNs to interact with cloud management systems and automatically adapt network policies to cloud services' needs. With SDN operators could make their WANs (VPNs, for example) work as smoothly with cloud XaaS as internal data center networks are starting to do already (with OpenStack Neutron APIs and integration via on-switch gateways with VMware NSX). It encouraging developers in each domain (WAN SDN and cloud DC) to be close collaborators, delivering superior results. Read more.