Generally, you'd use the REST interface to interact with the applications. Confluence additionally supports WebDAV which allows you to directly create/edit pages as documents.
FTP wouldn't handle documents though, the best it could do is offer to attach files, and you might as well do that with REST. And ftp is pretty much deprecated and blocked nowadays as it's utterly insecure.
Oh, and you're on Cloud, and an ftp interface would require a type-2 addon, which you can't install on Cloud.
More and more people are building their careers with Atlassian, and we want you to be at the front of this wave! Important Dates Start the Certification Prep Course by 2 April 2019 Take your e...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs