Experimentation: feature flags vs A/B platforms

Experimentation: feature flags vs A/B platforms

Four reads on a distinction teams keep blurring.

1️⃣ LaunchDarkly vs Statsig — LaunchDarkly owns release safety; Statsig bundles experimentation and metrics for product teams. Source: Reforge.
2️⃣ Optimizely vs warehouse-native testing — client-side test tools flicker and slow pages; warehouse stats analysis avoids both. Via Eppo blog.
3️⃣ Flags are not experiments — toggling a feature isn't measuring it; the case for separating the two systems. Via Statsig blog.
4️⃣ Sample ratio mismatch as your canary — the one diagnostic that catches a broken experiment before the readout lies. Source: Microsoft ExP papers.

Skip if you ship and pray. Essential if leadership asks 'did it work?' and you can't answer cleanly.

That's the stack for this week. Forward to a teammate.