Why should you register SharePoint Framework extensions programmatically and did you know that you can deploy your solution to SharePoint directly from npm?
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.
New version of the Office 365 CLI with commands for working with site designs and site scripts, managing custom actions, site collections and lists.
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.
Provisioning SharePoint configuration from PnP Provisioning Templates is very convenient, but works only on Windows.