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Windows 10 LTSC – the version that won't expire for years
(go.theregister.com)
This is a most excellent place for technology news and articles.
Specifically on what they say:
https://techcommunity.microsoft.com/blog/windows-itpro-blog/ltsc-what-is-it-and-when-should-it-be-used/293181
They intend it for stuff that really is specialty systems or single apps, like ATMs or stuff that drive CAT scans. Not geberal-purpose systems.
Doesn't mean it won't work for a whole lot of other people, though.
My employer has been using it for desktop AutoCAD installs for year now.