Software-defined networkings 10 Internet of things 7 SDN 5 Software defined networking 5 OpenFlow 4 Controllers 3 Openflow 3 Quality of service 3 Software-defined networks 3 5G mobile communication systems 2 ANP 2 Analytical network process 2 Application programs 2 Controller placement problem 2 Controller placements 2 Edge computing 2 Effective approaches 2 HTTP 2 History of engineering & technology 2 History of engineering and technology 2 Information management 2 Internet of Things (IoT) 2 K-means 2 Network architecture 2 Network intelligence 2 Network process 2 Placement problems 2 Technology: general issues 2 controller placement problem 2 k‐means 2