Product feature flags

Feature flags decouple code deployment from feature release, allowing engineering teams to toggle functionality in production instantly without redeploying code.

By wrapping new code in conditional statements, feature flags let you control product rollouts at runtime. Teams use them to run canary releases (testing changes on 1% of users before a full launch), execute instant rollbacks when bugs emerge, and run live A/B tests to measure user impact. Moving control from static config files to dynamic management platforms like LaunchDarkly or Unleash reduces deployment risk and eliminates the need for complex, long-lived git branches.

https://launchdarkly.com