There is an accelerating growth of connection requests from mobile devices and IoT devices. What to expect if this continues?
Most applications are of the form of some front-end web server talking with an application server that is talking with a middleware server that queries one or more database servers. And all of those servers all might talk with DNS servers to look up IP addresses or map them back to server names. And the whole can be slow. Using packet capture tools to discover whether the network or application is to blame could take many, many hours of work.