Network bandwidth utilization doesn't degrade gracefully. When network saturation is at 80% or more, it can degrade drastically and the usage can fall off the

Network bandwidth utilization doesn't degrade gracefully. When network saturation is at 80% or more, it can degrade drastically and the usage can fall off the cliff. It's important to monitor the network bandwidth utilization to raise alarms at lower thresholds so that you can add bandwidth capacity at real time, diverge traffic, or rate limit to slow down the download. That relates to the reliability of the service and the real time bandwidth capacity adjustment. For long term planning, it's important to collect statistics on peak/average/median network usage for capital expenditure purpose, to spend money on buying more bandwidth, adding switches, routers, servers, or building more data centers. This deals with the long term capacity planning.