1. A method comprising: sending, from a first server in accordance with a command received by the first server from a computing device, a service request to a second server, the service request including a request for data and including a first set of feature indicators representative of a first set of features according to which the data is to be processed, the first set of features being specific to a user of the first server, the service request being sent to an address specific to the first set of feature indicators, the first set of features causing the second server to perform a modification of the data to generate modified data; receiving, at the first server, a response to the service request from the second server, the response including modified data processed by the second server according to the first set of features, at least a portion of unmodified data provided by the second server, and a second set of feature indicators, the second set of feature indicators being generated by the second server based on a second set of features supported by the second server and represented by the second set of feature indicators, wherein the first server is configured by a first version of a software and the second server is configured by a second version of the software; based on the second set of feature indicators in the response, determining from the received response that a feature indicator among the first set of feature indicators is excluded from the second set of feature indicators; and generating a notification indicative of the service request and the feature indicator determined to be excluded from the second set of feature indicators.