A method to manage a global feature library is provided herein. The method provides a global feature library with a plurality of features defined therein. The global feature library includes a feature switch for each of the plurality of features. The feature switch is useable with an application code. The feature switch is linked to an application code. The feature switch includes a feature value that turns a feature associated with the feature switch on and off based on a global value rule. The global rule is transmitted to a client device capable of storing the feature value in-memory.