Worked on enhancing authentication security for the gardenlinux/gardenlinux repository by migrating Alicloud integration from CCC_CREDENTIALS to OpenID Connect (OIDC). Focused on updating CI/CD workflows to consume OIDC credentials, this effort aimed to reduce the credential surface area and align with modern cloud security best practices. The migration involved deprecating legacy credential methods and implementing improved access governance, resulting in a more secure and streamlined authentication process. Utilized skills in Cloud Computing, DevOps, and GitHub Actions, with YAML as the primary language for workflow configuration. The work prioritized security modernization over bug fixes during the development period.