What is the impact of using Feature Toggles in production?

Using Feature Toggles in production is significant because they allow for selective activation of features without requiring a new deployment. This approach offers numerous advantages, particularly in terms of agility and risk management. When features are toggled, development teams can deploy code that is "paused" or "inactive" for the end-user until it's deemed appropriate to activate it. This means that developers can push changes into the production environment that are not immediately exposed to users, allowing for continuous integration and deployment strategies.

Moreover, Feature Toggles provide the flexibility to enable or disable features for specific user segments or in response to certain conditions, effectively facilitating A/B testing and gradual rollouts. This can help in minimizing user disruption and ensuring that newly released features have been adequately tested in the production environment before being fully unveiled.

The other options do not capture the essence of what Feature Toggles achieve. For instance, they do not radically change the deployment process, complicate user access control, or focus solely on testing functions, but rather serve as a powerful tool for managing feature visibility during production use.