Accessing another cloudflare server from yours: Does it go via Cloudflare network?

Hi,

I want to deploy a server which calls an API which uses Cloudflare.

If I sign my server up to use Cloudflare and configure it up.

when my server calls the other Cloudflare server’s API will the IP transit go over the Cloudflare network and be nice and fast to and fro mine?

Cheers Mark