Poor DX shows up quickly: long onboarding, local environments that never work, deploy processes people fear and knowledge that lives in the heads of a few. Good DX means standardised flows, self-service, documentation that works and fast feedback.
DX is not fluff — it's a competitive advantage. When developers are freed from manual, repetitive steps, onboarding gets faster, delivery steadier and teams more autonomous. Measure it: time from new repo to first production deploy is a good starting point.