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Debian has LTS support of (at least) 5 years. [1]

And there is a 10 year Extended LTS commercial offering for those who need it:

Ubuntu Pro has pricing on its page. That Debian thing is "Contact us for quote" that is "you are probably too poor to afford us"

default is 2 years though? is 5 year LTS a guaranteed process? the page was unclear to me.