To resolve the testing error, which is typically a Cross-Origin Resource Sharing (CORS) restriction preventing a frontend test application from calling the backend API, you must update the API's configuration to explicitly trust the calling origin.
cors & add: The Azure CLI command group az webapp cors manages CORS configurations for an App Service. The add action appends a new rule to the application.allowed-origins: This parameter explicitly defines which external domains are authorized to make cross-origin requests to the API.http://test.wideworldimporters.com: Security best practices and the principle of least privilege dictate allowing only the exact required origin rather than a wildcard (*). Because the API is deployed in the shipping-apis-test-rg test resource group, the target origin needing authorization is the testing client domain.
