Abstract Network management has been significantly transformed by software‐defined networking (SDN), which consolidates control and improves adaptability. As a result of this paradigm shift, security concerns have emerged concurrently. Within SDN environments, maintaining service path integrity is of utmost importance because malicious entities can exploit network flows to gain access to data, resulting in security breaches. Thus, QKD networks require a management plane that can control and manage the QKD resources. Quantum key distribution networks can be controlled and managed separately by SDN, allowing quantum key forwarding to be separated from their control and management. The paper provides an overview of QKD networks enabled by SDN, along with an overview of its architecture, interfaces, and protocols. This paper elaborates on the overall architecture and related interfaces and protocols of QKD networks assisted by SDN. Then, three important paradigms for simulation are presented using three use cases.