Worked on the opensearch-project/documentation-website repository to deliver comprehensive documentation for Cosine Similarity Vector Normalization with Faiss, focusing on the transition to automatic vector normalization in the cosinesimil space type. Used Markdown and technical writing skills to clarify breaking changes introduced in version 2.18.0, providing explicit upgrade guidance and highlighting scenarios where innerproduct should be used for normalized vectors. Updated key documentation files to reflect these changes, reducing ambiguity for users planning upgrades. The work addressed user concerns by linking updates to relevant issues and ensuring that upgrade implications and best practices were clearly communicated throughout the documentation.