Developed end-to-end custom domain support for a personal portfolio site within the is-a-dev/register repository, focusing on automation and reliability. Introduced a JSON-driven configuration system to specify domain ownership and manage DNS records, enabling seamless integration of CNAME mappings for GitHub Pages and Cloudflare Pages hosting. Addressed configuration correctness by standardizing file naming and structure, ensuring robust domain-related features. Leveraged skills in configuration management, domain management, and JSON to reduce manual DNS updates and minimize misconfiguration risks. The work streamlined domain provisioning, allowing for branding-ready hosting and self-serve custom domains, all managed through a single, maintainable repository workflow.