Contributed targeted documentation enhancements to the opensearch-project/documentation-website, focusing on Index Rollups with an emphasis on the cardinality metric and multi-tier rollup functionality. Leveraging skills in data aggregation, technical writing, and documentation, the work clarified complex concepts for developers and operators, streamlining the onboarding process and reducing support needs. All updates were authored in Markdown and aligned with the upcoming 3.5 release, ensuring consistency and discoverability across the documentation set. Collaboration with cross-team reviewers helped maintain quality and accuracy, resulting in precise, actionable guidance that supports both adoption and effective use of Index Rollups within the OpenSearch ecosystem.