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Software Defined Networking (SDN) refers to the architectural approach of centralizing network intelligence in software-based controllers, decoupling it from forwarding functions and directly programmable switches. In this paradigm, vulnerability management involves detecting, assessing, and remediating potential security weaknesses within SDN environments. This entails monitoring the communication between SDN controller(s) and network devices, validating configurations, applying security patches, and regularly reviewing access controls. By ensuring the integrity of these components, organizations can maintain a secure networking infrastructure resilient against cyber threats, thereby safeguarding their technology and network security posture.