Transfer Files Rsync Over SSH

Hello,

I'm currently working on a project involving transferring files between two servers. I've been reading about various methods and came across using Rsync over SSH, which seems like a secure and efficient option. However, I'm still a bit unclear on some details regarding the process.

I found a detailed guide to Secure File Transfers by Using Rsync Over SSH. The blog covers the basics and some advanced tips, but I hoped to get additional insights.

Specifically, I require more details as below:

How do I ensure the transfer process is as fast and secure as possible?
What are the best practices for setting up Rsync over SSH for the first time?

Any advice or additional resources would be greatly appreciated!

Thanks in advance !!