Can I use Accelerated Domains when my domain is managed through Cloudflare?

Yes, you can still use Accelerated Domains when your domain’s DNS is handled by Cloudflare.

You just need to keep in mind that when setting up your DNS records, you can’t set records to proxy through Cloudflare (when proxied, the cloud is orange), because this doing so would give you a Cloudflare routing error.

In the picture below, you can see that under “Proxy status”, the cloud is gray, which means that requests will not be proxied through Cloudflare, but will correctly be routed directly to the Accelerated Domains routing endpoint.