1. A method comprising: defining, in a first config file based on a file schema, an access rule for a feature of a service in a cloud environment; creating, by a computing system of a service provider system, an empty config file based on the first config file, wherein the empty config file contains headers based on the first config file and the empty config file contains no configuration entries; providing, by the computing system of the service provider system, to a computing device external to the service provider system, the empty config file to enable editing of the empty config file at the computing device; determining, by the computing system, a change to the empty config file based on editing of the empty config file at the computing device; creating, by the computing system, a delta file comprising the change to the empty config file, wherein the change is identified as defining a service access of the feature of the service; modifying, by the computing system, an archive formatted file that is included in a library of class files, wherein the archive formatted file is modified to include the created delta file; creating, by the computing system, a unified config file having the feature of the service, wherein the unified config file is created by merging the delta file with the first config file; reading, by the computing system, the unified config file; and in response to reacting the unified config file, instantiating, by the computing system, an object for the feature of the service using the unified config file.