1. A server system comprising: a secure app update server that transforms an app code object received from an enterprise app server into a transformed app code object, wherein the app code object includes application programming interface (“API”) functions and wherein the transformed app code object includes API functions that operate differently than the API functions of the app code object; and a secure API server that interacts with an endpoint device that executes the transformed app code object, wherein the secure API server is adapted to convert API requests made by the transformed app code object into renormalized API requests formatted for processing by an enterprise API server, wherein the transforming of the app code object results in API requests from the endpoint device that would constitute invalid API requests if presented to the enterprise API server without renormalization.