Experiments, testing & rollout · Core

Feature flag

Also called: feature toggle

ELI5

A switch that turns a feature on for certain users.

Used in conversation

“Use the feature flag for the phased rollout.”

Definition

A control that enables or disables product functionality for selected users without a new code deployment.

Here “Feature flag” means: A control that enables or disables product functionality for selected users without a new code deployment.

Pitch context

You will see “Feature flag” in product strategy decks, roadmaps, experiments and architecture reviews when the discussion reaches experiments, testing & rollout.

Why it matters: It helps a reader interpret experiments, testing & rollout without confusing the measure, decision, role or evidence being discussed.

Sources & evidence · 2

Supporting source families. This entry is an editorial synthesis rather than a quotation from one canonical glossary.

Scrum Guides — The Scrum Guide — official current versionSupporting source family · primary · checked 2026-08-16
National Institute of Standards and Technology — Computer Security Resource Center GlossarySupporting source family · primary · checked 2026-08-16