Can a production bug actually increase revenue?

Yes— this config error defaulted users to premium, lifting revenue 73% without harming retention or activation.

What code turned the bug into a feature?

A simple feature-flagged if-statement resolver at registration time, with country and segment checks returning premium only for experiment users.

Rarely—most demand fixes. But query data first: if metrics like payments and retention hold, it might reveal user truths worth testing.

🧠 Engineering Culture

バグは収益を殺すもの？それとも違うのか。このバグは73%の向上をもたらし、ユーザーが本当に選ぶ方法の過激な真実を証明しました

DevTools Feed Apr 03, 2026 1 min read 15 views

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#A/B experiments #production bugs #revenue optimization #user defaults

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Originally reported by dev.to