Legacy enterprise is basically just outdated versions of Windows and Windows Server. I believe you could pay Microsoft for extended updates for a bit. If you now have mission critical software on ancient hardware/software, that’s on you. If it’s that critical you should maintain it.
Which really makes you wonder why there’s no legacy enterprise edition of windows and a consumer version.
Legacy enterprise is basically just outdated versions of Windows and Windows Server. I believe you could pay Microsoft for extended updates for a bit. If you now have mission critical software on ancient hardware/software, that’s on you. If it’s that critical you should maintain it.