Feature Flag

A feature flag or some call it a feature toggle is a conditional switch in your code that lets you control whether a feature is active internally or to users. They can be used for any part of the tech stack delivery including a CI/CD pipeline or test strategy.

Most commonly used to:

Why it’s useful for testers (TEVS) :

At a basic level, a feature flag acts as a conditional switch. The code for a feature can be deployed to production or any other environment, but its visibility or behaviour is controlled by configuration in a specific system.  By changing the flag’s state, teams can turn the feature on or off instantly, often for specific users, environments, or percentage-based rollouts. This can make the testing process much clearer and easier.

We highly recommend readin this article by Daria Tsion: Testing with feature flags: what we expected and what actually happened