Developed a JSON-based configuration system for the is-a-dev/register repository, enabling streamlined management of personal subdomains. The work focused on introducing a standardized configuration file that supports mail forwarding and owner metadata, reducing manual setup time and facilitating self-service onboarding for new subdomains. Leveraging skills in configuration management and domain management, the developer designed the solution to lay the foundation for future automation and validation processes. The implementation demonstrated disciplined version control practices and a clear understanding of mail routing concepts, resulting in a maintainable approach that prepares the repository for scalable, automated deployment of personal subdomain configurations.