This plugin adds a block to your block editor.
This block change it’s display depending on a current user’s capability.
See screen shot for how block will be displayed.
This plugin use REST API to convert block content, so you can use it with cached WordPress.
Even if you use CDN like CloudFront or Cloudflare, this plugin displays proper contents for each users.
For performance enhancement, Cookie Tasting is recommended.
It decrease server access including REST API by checking COOKIE value before accessing to server side script.