Too Long; Didn't Read
Feature flags (often called [feature toggles] have existed for a long time in the software development process. We have been using feature flags in some way or another without even knowing it. The feature flag technique doesn’t require you to implement it in this way. Instead, you can control the flags remotely and turn them on/off without even changing the code in production. Decoupling deployment from release helps where the team is supposed to build a feature that requires weeks of work, leading to a long-lived feature branch. Feature flags help in releasing any feature to only certain users.