Worked on the is-a-dev/register repository to implement and stabilize domain configuration supporting deployment on Vercel. Developed JSON-based DNS configurations that included CNAME records pointing to the deployment target and TXT records for domain ownership verification, ensuring deployment readiness and secure ownership validation. Introduced a dedicated JSON file for Vercel domain verification, streamlining the verification process. Performed configuration cleanup by removing unnecessary TXT records while preserving essential verification data, and established a rollback path for safe change management. Utilized skills in DNS management, configuration management, and domain management, with all changes tracked through a clear commit history to support auditability and maintenance.