How a CTO Uses Feature Flags to Deploy Fearlessly

Tech Leadership with Fexingo: Engineering Managers, CTOs, and Technical Leadership Conversations · Jul 23, 2026 · 7m

In this episode, Lucas and Luna explore how feature flags—also known as feature toggles—allow engineering teams to decouple deployment from release, reducing risk and enabling continuous delivery. They dissect a real-world example: how Etsy used feature flags to roll out a complete redesign of their checkout flow without a single production incident, gradually exposing 1% of users, then 5%, then 20%, with instant rollback at each step. The hosts discuss flag debt, the importance of a kill switch, and how to avoid the common pitfall of permanent flags. They also cover tooling like LaunchDarkly…