Well you've got .NET 8 (LTS), .NET 9 (standard support), .NET 10 (LTS). These are all supported at once.

Then you've got the .NET SDK/aspnet/runtime (on x64/arm32/arm64 linux/mac/windows), and also the various SDK packages themselves.

3**4 = 81 builds - but aren’t all of those independent and thus parallelizable?

	▲	martinald 9 hours ago \| parent [-]
		No, read the article. It needs to build some "sub" SDKs to build the final 'full' SDK packages. That's the whole point; they want to get to a state where they can do that.