What is Feature flag?
A feature flag is a switch in your code that turns a feature on or off without a new deploy. It lets you ship work hidden, release it to a few users first, and turn it off instantly if something goes wrong.
Read in RomanianFeature flag
Why it matters
Flags decouple deploying code from releasing a feature. You can merge unfinished work safely, run a gradual rollout, and kill a misbehaving feature without an emergency deploy.
In practice
Wrap the new path in a flag, default it off, and flip it for a cohort. The cost is discipline: flags that never get removed become their own kind of technical debt.