感谢您的提问！如果您尝试在App Service上配置性能测试，可以参考下面的官方文档。

https://docs.microsoft.com/en-us/azure/devops/test/load-test/app-service- web-app-performance-test？view = azure-devops

如果您能详细说明您的CORS要求和测试需求，将会很有帮助。

I'm trying to configure a performance test on my App Service. The service has CORS enabled.

How do I configure CORS to allow my performance test to run?

Thanks for the question! If you are trying to configure performance test on App Service you can to refer to below official document.

https://docs.microsoft.com/en-us/azure/devops/test/load-test/app-service-web-app-performance-test?view=azure-devops

It would be helpful if you could elaborate more on your requirements and needs of CORS for testing.