Developed Workload Identity Federation (WIF) support for the AWS Secrets Sync destination in the opentofu/terraform-provider-vault repository, enabling secure authentication through new write-only fields for identity token audience and key. Focused on backend development using Go, the work introduced a VaultVersion122 constant and ensured compatibility with Vault 2.0.0 and above. The implementation emphasized security-conscious defaults and provided clear configuration guidance, with comprehensive updates to documentation and targeted test coverage. API development and Terraform expertise were applied to refine the integration, with review-driven improvements ensuring maintainability and clarity for users adopting the new WIF-based authentication capabilities in their workflows.