Developed and deployed a per-user subdomain configuration feature for the is-a-dev/register repository, enabling individual users to manage custom domains, owner metadata, and DNS records. Focused on DNS configuration and domain management, the work introduced a scalable workflow for DNS provisioning using JSON, supporting white-label deployments and multi-tenant routing. This approach reduced manual DNS intervention and improved domain control, aligning with product goals for streamlined onboarding and operational efficiency. The implementation allowed immediate activation of new subdomains and positioned the platform for lower overhead in managing user domains, laying groundwork for enhanced branding and tenant isolation in future deployments.