A few topics come up frequently that are forgotten, or their impact is underrated. Here are a few questions that you should ask yourself alongside the usual infrastructure related planning:
In case of a ransomware attack or any form of intrusion, your assets may be sealed by government agencies for investigation purposes, Ypu may not have access to start your recovery from/to them. A Recovery site is not just for downtime. Do you own a dedicated recovery site/cluster and separated location for backups ?
Remember the days we laughed at the server stack named after the TV Characters! Actually, today this is much better than the “Normal” names we face today. Domain Controller is One (DC1) is now classed as a big round target by any attacker. Chose a convention only relevant to your team or organisation.