Cloud Fortified Certification Process

Hello,
I am new app developer, I would like to get my app to be “Cloud Fortified”, I have reviewed the process outlined here: https://developer.atlassian.com/platform/marketplace/cloud-fortified-apps-program-approval-process/

Are there any best practices beyond what has been listed in the above page? Could someone share their experience and the time taken to get through the process.

Thank you for your insights.
Vish