!!! Overview
[{$pagename}] ([QoS]) is the description or measurement of the overall performance of a [service], such as a telephony or computer [network] or a [cloud] computing [service], particularly the performance seen by the users of the [network].

!! More Information
There might be more information for this subject on one of the following:
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* [#1] - [Quality_of_service|Wikipedia:Quality_of_service|target='_blank'] - based on information obtained 2018-10-04-