Worked on the opensearch-project/documentation-website repository to deliver a Migration Assistant compatibility update for OpenSearch 2.19. Focused on technical writing and versioned documentation, the update involved replacing all references to OpenSearch 2.15 with 2.19 and introducing a compatibility table to clarify supported target versions. This change aimed to provide clearer upgrade guidance and reduce the risk of version-mismatch during migrations, ultimately improving onboarding for users transitioning to 2.19. The work was completed using Markdown and emphasized cross-version compatibility and change management, with all modifications captured in a single, auditable commit to ensure traceability and ease of review.