Some countries have really slow access to Azure Blob Storage. To mitigate this, we set up an Azure CDN front-end, backed on our blob storage (this is a basic supported configuration in the Azure portal).

It ought to be possible to rewrite URLs on Azure artifacts, so clicking a link redirects via the configured CDN - e.g.

https://jenkins.mono-project.com/view/Per-commit%20packages/job/build-package-mac-mono/63/Azure/processDownloadRequest/63/MonoFramework-MDK-master@a3e6b2c-dirty-5.5.0.49.macos10.xamarin.universal.UNSIGNED.pkg

should redirect to

https://xamjenkinsartifact.azureedge.net/build-package-mac-mono/63/MonoFramework-MDK-master@a3e6b2c-dirty-5.5.0.49.macos10.xamarin.universal.UNSIGNED.pkg

instead of

http://xamjenkinsartifact.blob.core.windows.net/build-package-mac-mono/63/MonoFramework-MDK-master@a3e6b2c-dirty-5.5.0.49.macos10.xamarin.universal.UNSIGNED.pkg