“How Do You Define Success?”

It sounds like a philosophy question, so people answer it like one — and “success is growth” tells an interviewer nothing about what you'd actually do on a Tuesday. They're checking two things: whether your idea of a good outcome is the same as the team's, and whether you can tell on your own when your work has gone well. That second half is where career changers get caught. In hands-on work success is immediate and someone tells you; in most desk roles nobody tells you anything. Get one plain definition, one signal you could check yourself without asking a soul, and a direct line to a real difficulty of this job.