Engineers Doubled Their Speed, but Delivery Lead Time Improved Only 4%

LeadDev reports that engineering teams roughly doubled their individual speed, yet overall lead time improved by only about 4%. The article argues that high tool adoption figures can hide how little end-to-end delivery has changed. The source text is a short teaser, so the underlying data and methodology are not visible here.

Why it matters: It is a reminder for delivery leaders to measure end-to-end flow, not just individual output or adoption, when judging whether AI tooling is actually speeding up delivery.