An existing production application (App1) will receive an update that introduces a new service which depends on another application (App2) still in development. You must deploy the App1 update before App2 is available and be able to enable the new service in App1 once App2 is deployed. What should you implement?

Implementing a feature flag allows you to deploy the updated App1 with the new service's code in a disabled state. Once App2 is deployed and ready, you can remotely enable the feature flag, activating the new service in App1 without requiring another deployment. This decouples deployment from release. Creating a fork or branch in the build refers to source control strategies, not mechanisms for enabling or disabling features in deployed applications. A branch policy defines rules for merging code into a branch and doesn't address the runtime activation of features.