I’m curious about what program that is and if its free

When you have weekly change control meetings

Home Lab is a lab environment to test out stuff and, rebuild things to test out something else.

Homeserver would be something more longlived.

Home Datacenter when you have more compute and storage in your basement than your whole town combined.

It stops becoming a "homelab" when it's impacting your family.

My entire "homelab" is contained in one box- if something fails on it, no one cares- it won't impact anyone. My home network consists of a simple mesh network.

This is something I don't think a lot of people consider. If you're the one that set this up, and you expire tomorrow, do you really want the burden of figuring this out on your spouse/partner/kids???

When you can format it, to try something new.

If you can't?... It became production

Diagrams are one thing, but traces are another. Have you thought about using something like Rack space or Netbox to create a source of detailed truth and document device inventory, their ports, and the connections between everything?

When your wife calls you if something isn't working. If there's a family facing service it's no longer a home lab, its home prod.

If you can't power it off without losing services or data then it's not a lab. Don't get confused by this sub where people call their home infrastructures "lab".

When it starts to carry any level of production workload from an outside network :)