NIR monitors and records hardware and software telemetry data over time to identify Anomalies in the fabric and help automate troubleshooting, root-cause analysis, capacity planning and remediation. It helps infrastructure owners comply with SLAs required by their customers. The same NIR app works for both ACI/APIC and NXOS/DCNM platforms.
Learn more at https://www.cisco.com/c/en/us/products/data-center-analytics/index.html
You can watch this video also at the source.