What is SUT and where did it come from?

Question

I see many people talking about the term SUT, but do not understand why they use that term.

SUT is what you want to test?

Where does this term come f

Answer 1

It most likely means "System Under Test", i.e. the system being tested, as opposed to other systems it may interact with, but which are not being explicitly tested (because they're someon else's responsibility).