Hung Cao centralized Vault URL configuration within the gooddata/gooddata-ui-sdk repository by implementing a variable-driven approach in GitHub Actions workflows. Leveraging skills in CI/CD, configuration management, and DevOps, Hung replaced hardcoded Vault URLs with a single variable reference, enabling consistent and maintainable environment-specific configurations. This change laid the foundation for future multi-environment support and reduced the risk of misconfigurations by consolidating the Vault URL as a single source of truth. The work, primarily using YAML for configuration, focused on improving maintainability and scalability of the CI/CD pipeline, though no major bug fixes were addressed during this period.