https://blogs.cisco.com/developer/its-time-to-move-away-from-snmp-and-cli-and-use-model-driven-telemetry Streaming telemetry is a technology that enables scalable network monitoring by repeatedly acquiring data from network devices and sending it to configured endpoints. Streaming telemetry uses a push model, meaning that the network devices initiate the data transmission without being polled by the monitoring clients. Streaming telemetry also provides close to real-time access to operational data, allowing for more dynamic and responsive network analysis and troubleshooting12.
References := 1: Cisco Data Center Core Technologies 2: Cisco Nexus 9000 Series NX-OS Programmability Guide, Release 9.3(x)