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REVIEW

Navigating the Complexities of Controller Placement in SD-WANs: A Multi-Objective Perspective on Current Trends and Future Challenges

Abdulrahman M. Abdulghani^1,*, Azizol Abdullah¹, A. R. Rahiman¹, Nor Asilah Wati Abdul Hamid^1,2, Bilal Omar Akram^3,4, Hafsa Raissouli¹

1 Department of Communication Technology and Network, Faculty of Computer Science and Information Technology, Universiti Putra Malaysia (UPM), Serdang, 43400, Malaysia
2 Institute for Mathematical Research, Universiti Putra Malaysia (UPM), Serdang, 43400, Malaysia
3 Department of Computer and Communication Systems Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang, 43400, Malaysia
4 Wireless and Photonics Networks Research Centre of Excellence (WiPNET), Faculty of Engineering, Universiti Putra Malaysia (UPM), Serdang, 43400, Malaysia

* Corresponding Author: Abdulrahman M. Abdulghani. Email: