Worked on enhancing the SDN Controller plugin documentation for the vatesfr/xen-orchestra repository, focusing on making developer onboarding and SDN rule management more accessible and reliable. Delivered a comprehensive Markdown-based guide detailing the usage of the OpenFlow XAPI plugin, including a new rule-management mode via XAPI. The documentation clarified configuration options, limitations, and requirements for both direct OpenFlow and XAPI plugin modes, and expanded xo-cli usage instructions to cover per-VIF and network-wide rules. This technical writing effort improved clarity for operators and developers, reducing misconfiguration risks and supporting more efficient SDN rule management through clear, structured documentation practices.