Worked on the eu-cdse/documentation repository to enhance data catalog and instrument documentation, focusing on improving data discoverability and user onboarding. Delivered updates to the collections.json file, adding a new 'os_images' collection and refining metadata for existing datasets to ensure accuracy and consistency. Developed detailed documentation for Copernicus Sentinel-6 instruments using Quarto Markdown, supporting reproducibility and clear user guidance. Emphasized metadata governance by establishing consistent naming conventions and thorough commit practices. Utilized JSON for catalog management, Markdown for technical writing, and Git for version control, demonstrating a methodical approach to documentation management and metadata-driven content curation throughout the project.