Event Volume

Event volume is the total number of events collected in a period — the number that measures data usage and is often the basis of a tool's pricing.

Event volume differs from the count of a specific event: an event count is about one name, while event volume is the sum of all events across all names, and it is more an operational and financial number than a behavioral one. Its importance is in two places: capacity and cost. Runaway volume growth is usually not a sign of more behavior but the effect of chatty instrumentation, such as an event firing on every scroll or a duplicate event. So volume should be read next to unique users and next to the list of highest-volume events, to tell whether the growth is real usage or technical noise. One key point: bot traffic can inflate volume heavily with no analytical value, so bot-free volume is the healthier measure.