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, a delta file based on identifying a change to the first config file, wherein the change includes defining a service access of the feature of the service; modifying, by the computing system, an archive that is included in a library of class files, wherein the archive is modified to include the created delta file; creating, by the computing system, a second config file having the feature of the service, wherein the second config file is created by merging the delta file with the first config file; reading, by the computing system, the second config file that is created; and instantiating, by the computing system, an object for the feature of the service using the second config file that is read.