Definition
The raw operational event data continuously captured from systems in use — call start/end times, click events, status changes — before it's processed into reportable metrics.
Business Importance
Telemetry is the raw input every dashboard and analytics engine depends on; gaps in telemetry capture are the most common reason a reported metric turns out to be wrong.
Industry Examples
A dialer system logging the exact timestamp of every call attempt, connect, and disconnect as raw telemetry before it's rolled up into a daily contact rate.