[detaro]

Example: How do you do "immutable" management of Mac OS machines? Taking what's typically described as such there, you've just turned a 30s deploy of software into a multi-hour "lets reimage the entire machine"?

(although that's of course not strictly "old stuff")

[grrywlsn]

Were Macs in scope of the original post? I assumed it was server side stuff, rather than office hardware. For that, though, I'd use Jamf (Pro) or some other MDM option.

[detaro]

Even if you exclude "office hardware" from configuration management, our Mac OS build and test farm is "servers" I'd say. Not everyone running servers is doing so to run an online service on a platform of their choice.