Thanks for sharing this!
I do have a question. When you mention "Getting and keeping clients healthy is a daily activity we have people focused on and that provides us with a good foundation to start with.", how many people do you actually have focused on that task on a daily basis?
We have a much smaller footprint than 300k clients, but having 85+ locations globally with 24/7 production plants etc., it's something we struggle with regularly (devices being offline, users being on vacation, devices hanging etc.) impacting our 100% compliance target. We usually get to 98% but those last 2% is really a pain chase, regardless of the SCCM client health scripts and remediation jobs we have running.
So I was just wondering how much effort is spent on getting to 100% in other environments.