Office 365 CDN can help you improve performance of SharePoint Framework solutions. But if you configure it incorrectly, your solutions won't work at all.
Office 365 CDN can help you optimize the performance of your portal. While disabled by default you can easily enable and manage it using the Office 365 CLI.
Many articles about building SharePoint Framework solutions mention uploading your files to a CDN. But are you sure you actually need one?
Serving your scripts as quickly as possible is necessary to get great performance of your SharePoint Framework customizations. So how good is your setup?
Using the standard toolchain you can easily deploy your SPFx files to Azure. Here is what you should do next to load these files as quickly as possible.