The devices connected to your router battle for bandwidth like thirst-crazed beasts jostling for access to a receding watering hole. You can’t see the melee, but you can feel its impact. Without intervention, the strongest competitors—a BitTorrent download, for instance—will drink their fill, even if it’s not essential to their survival, while others—a VoIP call, a Netflix stream, or a YouTube video—are left to wither and die.
A router with good Quality of Service (QoS) technology can prevent such unequal distribution of a precious resource. You can dip only one straw into the Internet at a time, after all. QoS ensures that each client gets its chance for a sip, and it also takes each client’s specific needs into account. BitTorrent? Cool your jets. If one of your packets is dropped, it’ll be resent. You can run in the background. Netflix, VoIP, YouTube? Lag results in a bad user experience. Your data gets priority.
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