Contributed a comprehensive migration guide to the AdobeDocs/adobe-io-events repository, focusing on the transition from the Legacy Marketo Lead Activity Data Stream to the Adobe I/O version. The work centered on technical writing and API integration, using Markdown to deliver clear, actionable documentation that details migration steps, key differences, and benefits. Addressed lint issues and ensured consistency in message values across both legacy and new sample configurations, supporting reliability and future-proofing. Incorporated peer feedback to enhance accuracy and usability, and updated configuration files to streamline deployment and discovery. The effort improved cross-team adoption and reduced migration risk through precise documentation.