Jonyanez contributed to the MicrosoftDocs/azure-stack-docs repository by documenting the new Definition Update Mode feature for Microsoft Defender for Endpoint runtime protection. Using Markdown and leveraging expertise in Azure CLI and cloud security, Jonyanez authored configuration guidance and detailed behavioral notes to help engineers and operators understand and implement the feature correctly. The work included updating repository metadata and author information to ensure accuracy and maintainability, aligning documentation with recent product changes. Through clear commit messages and disciplined version control, Jonyanez improved onboarding efficiency and reduced misconfiguration risks, demonstrating a thorough approach to technical writing and documentation maintenance within the project.