Developed Workload Identity Federation support for the Azure destination in the opentofu/terraform-provider-vault repository, enabling secure token-based authentication for secrets synchronization. Focused on backend development and API integration using Go, the work introduced write-only identity token fields, normalized token TTL handling, and field migrations to minimize sensitive data exposure. Refactored Azure networking fields to eliminate duplication and centralized WIF configuration for maintainability. Expanded automated testing and updated documentation to reflect the new Azure WIF features, ensuring reliability and alignment with Vault 2.x enterprise requirements. These enhancements improved security, reliability, and Azure integration parity within the secrets-sync flow.