Developed per-user domain provisioning with multi-record DNS support in the is-a-dev/register repository, enabling customers to deploy personalized domains with flexible configuration options. The work involved evolving the data model from a single DNS record to support multiple records, streamlining domain, owner, and CNAME management for scalable, multi-tenant environments. Leveraging skills in configuration management, data structure management, and domain management, the developer utilized JSON to implement these enhancements. This feature lays the foundation for tenant-specific branding and efficient DNS management, accelerating onboarding processes and improving customer experience. The solution was delivered feature-ready for review and potential production deployment.