1. A network system comprising: a communication interface for enabling the network system to communicate with an end-user device over a communication link; a processor configured to: obtain an indication of a particular path or a particular destination, wherein the particular path comprises a particular traffic route, a particular traffic tunnel, or a particular traffic link, and wherein the particular destination comprises a particular network end-point or a particular network server; based on the indication of the particular path or the particular destination, collect a plurality of service usage measurements of the end-user device's use of a first network data service of a plurality of network data services available to the end-user device over a wireless network, the end-user device configured to access the first network data service in accordance with a first service policy, the first service policy for assisting in routing or directing end-user device communications associated with the first network data service over the particular path or to the particular destination, at least one of the plurality of service usage measurements comprising a measure of attempted or successful communications over the particular path or to the particular destination; and determine, based on the at least one of the plurality of service usage measurements, whether the end-user device is accessing the first network data service in accordance with the first service policy; and memory coupled to the processor and configured to provide the processor with instructions.