Stefan Dlugolinsky updated the Dynamic DNS API documentation in the EGI-Federation/documentation repository to reflect the current implementation, focusing on clarity and accuracy for developer onboarding. He collaborated closely with API teams to ensure the documentation matched recent code changes, detailing endpoints, parameters, and response structures. Using Markdown and applying technical writing best practices, Stefan improved the documentation’s structure and completeness, which helped reduce integration confusion and support overhead. His work demonstrated skills in API design, documentation standards, and version control. The depth of the update provided developers with reliable, up-to-date reference material, supporting faster and more reliable API adoption.