The evolution of network visibility
In the old days, it took a bunch of help desk tickets for an engineer to realize there was something wrong with the network. At that time, troubleshooting meant logging into network devices one-by-one to pore over logs. In the late 80s, SNMP was introduced giving engineers a way to manage network devices remotely. It quickly became a way to also collect and manage information about devices. That was a big step forward, and it marked the beginning of network visibility as we know it today.