Mikhail Livanov enhanced the Ecwid/ecwid-java-api-client repository by developing advanced Visitor Analytics Reporting features focused on tracking new and returning visitors. He implemented new report types that segment visitor activity by source and aggregate statistics to compare user acquisition and engagement, enabling more granular marketing analytics for client integrations. Using Kotlin and applying backend development and API design skills, Mikhail refactored existing code to improve maintainability while expanding reporting capabilities. Although no major bugs were addressed during this period, his work provided deeper insights into visitor behavior, supporting data-driven product decisions and improving the overall analytics infrastructure within the Java API client.