Contributed to the kyungjunleeme/kafka_study repository by developing and enhancing Chapter01 Kafka documentation, focusing on clarifying core concepts such as pub/sub, clustering, scalability, and data handling. The work emphasized the business benefits of Kafka and strategies for reducing data movement, aiming to accelerate onboarding and improve referenceability for new and existing team members. Leveraged technical writing skills and adhered to documentation standards using Markdown, while ensuring Git traceability through well-documented commits. No major bugs were addressed during this period, but the documentation updates laid a solid foundation for future feature development and knowledge sharing within the project.