Duncan Mak developed Arm64 support for the Oven-sh.Bun installer in the rustdesk/winget-pkgs repository, enabling seamless installation and use on ARM64 Windows systems. He implemented nested installer files and introduced ARM64-specific URLs, updating the packaging workflow to publish architecture-specific artifacts for Winget. This work required proficiency in YAML configuration, installer development, and package management, ensuring cross-architecture compatibility and expanding the reach of the Windows Winget ecosystem. By focusing on release engineering and deployment automation, Duncan addressed the need for broader platform support, demonstrating depth in managing installer logic and artifact distribution for modern Windows environments within a one-month period.